# Tiger City IMX # Data Sheet ## Tiger City IMX Industrial Computer with Linux OS The Tiger City IMX minicomputer uses Linux operating systems and is equipped with several communication interfaces such as: Ethernet, USB 2.0, HDMI, GSM, RS232, RS485, 1-Wire and multiple analog-digital inputs and outputs. It can also be configured to include a Wi-Fi module and encryption modules that increase the security of the device. The casing enables installation on the DIN rail. The front panel has switches, an OLED display and a joystick for manual control of the device operation.
**TCX IMX8** [![image.png](https://doc.redisage.com/uploads/images/gallery/2026-01/scaled-1680-/p10image.png)](https://doc.redisage.com/uploads/images/gallery/2026-01/p10image.png) **Features:** - Power: voltage 12-24 VDC +-20%, maximum power 25 W, reverse polarity protection - SoM: VAR-SOM-MX8M-MINI - Core: NXP’s i.MX 8M Mini with 1.6 GHz Quad-core ARM Cortex-A53 and 400 MHz Cortex-M4 real-time processor - Timing: 1.6 GHz - RAM: 2 GB DDR4 - Flash eMMC: 16 GB - 1x microSD connector - 1x microHDMI 1.3a (optional) - 1x microUSB 2.0 HOST / OTG, max. 500 mA (optional) - 1x USB-A 2.0 HOST, max. 1 A - 1x modem GSM SIM7600E + microSIM (optional) - 1x 1-Wire (optional) - 7x DIO - digital input/output, max. 30 V - 4x UIO - universal analog-digital input/output (temperature measurement with sensors, e.g.: Pt1000, Ni1000, KTY, NTC, current, voltage and resistance sensors), max. 20 V (optional) - 3x/5x DI - digital input max. 30 V (optional) - 2x RS232, baudrate 50-115200 bps - 2x RS485, baudrate 50-115200 bps (4x optional) - 1x Ethernet 10/100 Mbps - RJ45 connector - 1x Wi-Fi® / 2.4G module (optional) - 1x secure element (optional) - 1x display OLED 0.87" 128x32 px black&white (optional) - 1x Joystick (optional) - RTC (optional), buzzer, EEPROM - TPM (optional) - Software watchdog
### Specifications‎‎‎
**Redisage PN** **LCX01** **LCX02** **LCX03** **LCX04** **LCX05** **LCX06**
**Version** **Light** **Light GSM** **Basic** **Basic GSM** **Max****Max GSM**
Power input 12-24 VDC +-20%, maximum power 25 W, reverse polarity protection
System on Module VAR-SOM-MX8: NXP iMX8M-MINI
Core NXP’s i.MX 8M Mini with 1.6 GHz Quad-core ARM Cortex-A53 and 400 MHz Cortex-M4 real-time processor
Timing 1.6 GHz
RAM 2 GB DDR4
Flash eMMC 16GB
Ports/ Connectors RS232 2x 2x 2x 2x 2x 2x
terminal block max. 2.5 mm2 wire max. 15 m at 115.2 kbps
RS485 2x 2x2x 2x 4x 4x
terminal block max. 2.5 mm2 wire max. 1,200 m at 9.6 kbps; max. 400 m at 115.2 kbps
Digital Input ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) 5x 3x 5x 3x
Digital Input/Output 7x 7x 7x 7x 7x 7x
Universal Input/Output ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) 4x (Current Input, Voltage Input) 4x (Current Input, Voltage Input) 4x (Current Input, Voltage Input, Current Output, Resistance) 4x (Current Input, Voltage Input, Current Output, Resistance)
USB type A ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png)
microUSB ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png)
1-Wire ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png)
microHDMI ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png)
microSD ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png)
Ethernet 10/100 Mb/s Base-T, RJ45 connector
Wi-Fi**®** 2.4/5 GHz 802.11b/g/n/ac SMA Antenna connector ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png)![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png)![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png)
GSM ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png)
Joystick ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png)
Display OLED 0.87'' 128x32 px black&white ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png)
Watchdog Software WDT on external ESP32 microcontroller
Secure chip ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png)
TPM ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png)
RTC module ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png)
Buzzer ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png)
External Flash ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:x:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/274c.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png)
EEPROM ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png) ![:white_check_mark:](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/standard/caa27a19-fc09-4452-b2b4-a301552fd69c/32x32/2705.png)
OS Embedded Linux
Dimensions \[mm\] 119 x 101 x 22.5
Work temperature \[°C\] -40 to +75
Certification CE, RoHS, ...
Norms [Check here](https://doc.redisage.com/link/128#bkmrk-norms)
### Placement of peripherals ![](https://doc.redisage.com/uploads/images/drawio/2026-03/drawing-29-1773747141.png) ### Frame ground FG Electronic circuits are constantly prone to electrostatic discharge ESD. Redisage Electronics modules feature a design for the frame ground terminal block FG. The frame ground provides a path for bypassing ESD, which provides enhanced static protection ESD abilities and ensures the module is more reliable. Connecting FG terminal block to the earth ground will bypass the ESD disturbances outside the device so will provide a better level of protection against ESD. Frame Ground FG connection reference drawing is provided below.
If earth ground is not available FG can be left floating or it can be connected with the power supply GND. ### Enclosure The space that the device occupies can be approximated to a cube of the following dimensions: 119 mm x 101 mm x 35,3 mm. [![image.png](https://doc.redisage.com/uploads/images/gallery/2026-01/scaled-1680-/image.png)](https://doc.redisage.com/uploads/images/gallery/2026-01/image.png) ### Norms #### EMC standards
**Standard****Title****Description****Comments**
**Emission**
EN 61000-6-4Generic Emission StandardEmission standard for industrial environment
EN 55011Conducted EmissionLimits for Group 1, Class APower port
EN 55011Radiated EmissionLimits for Group 1, Class A
EN 55032Conducted EmissionLimits for Class AEthernet port
**Immunity**
EN 61000-6-2Generic Emission StandardImmunity standard for industrial environment
EN 61000-4-2Electrostatic discharge (ESD)±4kV (contact discharge), ±8kV (air discharge)
EN 61000-4-3Radio Frequency immunity10V/m
EN 61000-4-4Burst/EFT immunity±1kVAll ports
EN 61000-4-5Surge immunity±0.5kV (line-to-line), ±1kV (line-to-earth)Power port
EN 61000-4-29Voltage Dips, Short Interruptions and Voltage VariationsIn progressPower port
#### Climatic standards
**Standard****Title****Description****Comments**
EN 61131-2Product StandardProgrammable controllers - Part 2: Equipment requirements and tests
EN 60068-2-1Cold (storage)Cold test “storage” suitable for non-heat emitting products. The object of the test is limited to determining the suitability of the components, devices or products for transport or storage at low temperatures.
EN 60068-2-2Dry Heat (storage)Dry heat test “storage” suitable for non-heat emitting products. The object of the test is limited to determining the suitability of the components, devices or products for transport or storage at high temperatures.
EN 60068-2-1Cold (operation)Cold test “operation” suitable for heat emitting products. The object of the test is limited to determining the suitability of the components, devices or products for operation at low temperatures.
EN 60068-2-2Dry Heat (operation)Dry heat test “operation” suitable for heat emitting products. The object of the test is limited to determining the suitability of the components, devices or products for operation at high temperatures.
EN 60068-2-14Change of temperature (storage)The change of temperature test “storage” is suitable for non-heat emitting products. The objective of this test is limited to determining the suitability of the components, devices, or products for operation during temperature changes.
EN 60068-2-14Change of temperature (operation)The change of temperature test “operation” is suitable for heat emitting products. The objective of this test is limited to determining the suitability of the components, devices, or products for operation during temperature changes.
RedisageCold startCold start test is suitable for non-heat emitting products just before starting the device. The objective of this test is limited to determining the suitability of the devices for start in cold conditions.
EN 60068-2-30Damp Heat (storage)Damp heat test “storage” is suitable for non-heat emitting products. The objective of this test is limited to determining the suitability of the devices for transport or storage under cyclic damp heat conditions.
EN 60068-2-30Damp Heat (operation)Damp heat test “operation” is suitable for non-heat emitting products. The objective of this test is limited to determining the suitability of the devices for transport or storage under cyclic damp heat conditions.
### ### Additional notes Wi-Fi® is a registered trademark of Wi-Fi Alliance®.
**Related information and links**
[Ordering information](https://redisage.com/en/delivery.html)[Accessories](https://redisage.com/eng_m_Accessory-174.html)[Similar products](https://redisage.com/search.php?text=+&sort=name&order=a)
### Products family sample photo
[https://redisage.com](https://redisage.com/) **DISCLAMER NOTES** ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. #### Datasheet-ID: #### TCXV # Get Started ## Tiger City IMX Industrial Computer with Linux OS ### Connecting Tiger to a power supply Connect a power supply to the pins shown in the picture below. The suggested power supply is a DC voltage in range of 12-24 V. ![](https://doc.redisage.com/uploads/images/drawio/2026-03/drawing-29-1773747160.png) ### Connecting to a console In order to connect to the system console, follow this [instruction](https://doc.redisage.com/link/144#bkmrk-page-title). ### First boot In order to perform the first boot, follow this [instruction](https://doc.redisage.com/link/143#bkmrk-page-title). # Hardware # Introduction {{@273}} ### Specifications of the device - Power: voltage 12-24 VDC +-20%, maximum power 25 W, reverse polarity protection - SoM: VAR-SOM-MX8M-MINI - Core: NXP’s i.MX 8M Mini with 1.6 GHz Quad-core ARM Cortex-A53 and 400 MHz Cortex-M4 real-time processor - Timing: 1.6 GHz - RAM: 2 GB DDR4 - Flash eMMC: 16 GB - 1x microSD connector - 1x microHDMI 1.3a (optional) - 1x microUSB 2.0 HOST / OTG, max. 500 mA (optional) - 1x USB-A 2.0 HOST, max. 1 A - 1x modem GSM SIM7600E + microSIM (optional) - 1x 1-Wire (optional) - 7x DIO - digital input/output, max. 30 V - 4x UIO - universal analog-digital input/output (temperature measurement with sensors, e.g.: Pt1000, Ni1000, KTY, NTC, current, voltage and resistance sensors), max. 20 V (optional) - 5x DI - digital input (3 x DI), max. 30 V (optional) - 2x RS232, baudrate 50-115200 bps - 2x RS485, baudrate 50-115200 bps (4x optional) - 1x Ethernet 10/100 Mbps - RJ45 connector - 1x Wi-Fi® / 2.4G module (optional) - 1x secure element (optional) - 1x display OLED 0.87" 128x32 px black&white (optional) - 1x Joystick (optional) - RTC (optional), buzzer, EEPROM - TPM (optional) - Software watchdog ### Dimensions of the device The space that the device occupies can be approximated to a cube of the following dimensions: 119 mm x 101 mm x 22.5 mm. ### Simplified block diagram
# New Page # New Page # New Page # Technical Diagrams ## {{@273#bkmrk-tiger-city-imx-embed}} ### Enclosure {{@274#bkmrk--6}} ### {{@274#bkmrk-placement-of-periphe}} {{@274#bkmrk-}} ### {{@274#bkmrk-detailed-connections}} {{@274#bkmrk--4}} # External Interfaces ## {{@273#bkmrk-tiger-city-imx-embed}} - [{{@133#bkmrk-usb}}](https://doc.redisage.com/link/133#bkmrk-usb) - [{{@133#bkmrk-serial-ports}}](https://doc.redisage.com/link/133#bkmrk-serial-ports) - [{{@133#bkmrk-1-wire}}](https://doc.redisage.com/link/133#bkmrk-1-wire) - [{{@133#bkmrk-hdmi}}](https://doc.redisage.com/link/133#bkmrk-hdmi) - [{{@133#bkmrk-%C2%A0-3}}](https://doc.redisage.com/link/133#bkmrk-%C2%A0-3) - [{{@133#bkmrk-%C2%A0-4}}](https://doc.redisage.com/link/133#bkmrk-%C2%A0-4) - [{{@133#bkmrk-microsd-slot}}](https://doc.redisage.com/link/133#bkmrk-microsd-slot) - [{{@133#bkmrk-wi-fi%E2%80%8E-%2F-bluetooth}}](https://doc.redisage.com/link/133#bkmrk-wi-fi%E2%80%8E-%2F-bluetooth) - [{{@133#bkmrk-%C2%A0-6}}](https://doc.redisage.com/link/133#bkmrk-%C2%A0-6) - [{{@133#bkmrk-digital-inputs%2Foutpu}}](https://doc.redisage.com/link/133#bkmrk-digital-inputs%2Foutpu) - [{{@133#bkmrk-universal-inputs%2Fout}}](https://doc.redisage.com/link/133#bkmrk-universal-inputs%2Fout) ### USB The device is equipped with 2 USB connectors. #### USB1 MicroUSB connector for USB 2.0 is placed on the front panel. The interface can work in both host and device modes. The signal on the connector can be changed with a switch. The maximal current of the connector is 500 mA. ##### MicroUSB connector location [![image.png](https://doc.redisage.com/uploads/images/gallery/2026-03/scaled-1680-/G32image.png)](https://doc.redisage.com/uploads/images/gallery/2026-03/G32image.png) ##### USB1 connection diagram
**Description** **Processor pin** **Default function**
5 V USB voltage F22 USB1\_VBUS
USB data differential pair negative A22 USB1\_D\_N
USB data differential pair positive B22 USB1\_D\_P
USB on the go AB10 USB1\_OTG\_PWR
##### {{@134#bkmrk-uart4}} {{@134#bkmrk-device-name%3A-%2Fdev%2Ftt-3}} {{@134#bkmrk-signal-processor-pin-8}} #### USB2 USB-A connector for USB 2.0 is placed on the side of the device with the interface set up in the host mode. The maximal current of the connector is 1 A. ##### USB-A connector location [![image.png](https://doc.redisage.com/uploads/images/gallery/2025-07/scaled-1680-/XJ3image.png)](https://doc.redisage.com/uploads/images/gallery/2025-07/XJ3image.png) ##### USB2 connection diagram
**Description****Processor pin** **Default function**
USB power switch control F23 USB2\_VBUS
USB data differential pair negative A23 USB2\_D\_N
USB data differential pair positive B23 USB2\_D\_P
### Serial ports The device is equipped with 3 serial port connectors. #### RS485-1/2 Baud rate: **50-115200** bps. ##### Location of the RS485-1/2 connector [![image.png](https://doc.redisage.com/uploads/images/gallery/2025-07/scaled-1680-/ezcimage.png)](https://doc.redisage.com/uploads/images/gallery/2025-07/ezcimage.png)
**Connector pin** **Description**
A1 RS485 A1
B1 RS485 B1
G Ground
A2 RS485 A2
B2 RS485 B2
#### RS485-3/4 Baud rate: **50-115200** bps. ##### Location of the RS485-3/4 connector [![image.png](https://doc.redisage.com/uploads/images/gallery/2025-07/scaled-1680-/yP6image.png)](https://doc.redisage.com/uploads/images/gallery/2025-07/yP6image.png)
**Connector pin** **Description**
A3 RS485 A3
B3 RS485 B3
G Ground
A4 RS485 A4
B4 RS485 B4
##### RS485-1/2/3/4 connections diagram
//sprawdzić z Dmytro całkowitą rezystancję terminacji (rezystor + transoptor go załączający) ##### {{@134#bkmrk-%C2%A0}} {{@134#bkmrk-signal-processor-pin-1}} ##### [{{@136#bkmrk-expander-b}}](https://doc.redisage.com/link/136#bkmrk-expander-b) The RS485 1 & 2 lines are controlled from the B expander connected by the SPI2 interface with the CPU. ##### [{{@136#bkmrk-expander-f}}](https://doc.redisage.com/link/136#bkmrk-expander-f) The RS485 3 & 4 lines are controlled from the F expander connected by the SPI2 interface with the CPU. ##### [{{@136#bkmrk-expander-e}}](https://doc.redisage.com/link/136#bkmrk-expander-e) The termination resistors are controlled by signals output from the Expander E connected by the I2C3 interface with the CPU. #### RS232-1/2 Baud rate: **50-115200** bps. ##### Location of the RS232-1/2 connector [![image.png](https://doc.redisage.com/uploads/images/gallery/2025-07/scaled-1680-/0eYimage.png)](https://doc.redisage.com/uploads/images/gallery/2025-07/0eYimage.png)
**Connector pin** **Description**
T1 RS232 TX1
R1 RS232 RX1
G Ground
T2 RS232 TX2
R2 RS232 RX2
##### RS232-1/2 connections diagram
##### {{@134#bkmrk-uart4}} {{@134#bkmrk-device-name%3A-%2Fdev%2Ftt-3}} {{@134#bkmrk-signal-processor-pin-8}} ##### {{@134#bkmrk-uart-1}} {{@134#bkmrk-device-name%3A-%2Fdev%2Ftt}} {{@134#bkmrk-signal-processor-pin-5}} ##### {{@134#bkmrk-uart3-1}} {{@134#bkmrk-device-name%3A-%2Fdev%2Ftt-2}} {{@134#bkmrk-signal-processor-pin-7}} ### 1-Wire The device is equipped with the 1-Wire interface operating with Maxim sensors. Connector 5 V outputs are secured with a 100 mA fuse. #### 1-Wire connector and pins [![image.png](https://doc.redisage.com/uploads/images/gallery/2025-07/scaled-1680-/tEKimage.png)](https://doc.redisage.com/uploads/images/gallery/2025-07/tEKimage.png)
**Connector pin****Description**
1W 1-Wire data
5V 1-Wire +5 V power
G Ground
#### 1-Wire connection diagram
#### {{@134#bkmrk-i2c3}} {{@134#bkmrk-device-name%3A-%2Fdev%2Fi2}} {{@134#bkmrk-signal-processor-pin-2}} #### 1-Wire bridge Part number: **DS2484** ### HDMI The device is equipped with the micro HDMI standard connector located on the front panel. #### HDMI connector location [![image.png](https://doc.redisage.com/uploads/images/gallery/2026-03/scaled-1680-/EL5image.png)](https://doc.redisage.com/uploads/images/gallery/2026-03/EL5image.png)
**Signal** **Processor pin** **Default function**
DSI\_TX0\_N A9 MIPI\_DSI\_TX0\_N
DSI\_TX0\_P B9 MIPI\_DSI\_TX0\_P
DSI\_TX1\_N A10 MIPI\_DSI\_TX1\_N
DSI\_TX1\_P B10 MIPI\_DSI\_TX1\_P
DSI\_TX2\_N A12 MIPI\_DSI\_TX2\_N
DSI\_TX2\_P B12 MIPI\_DSI\_TX2\_P
DSI\_TX3\_N A13 MIPI\_DSI\_TX3\_N
DSI\_TX3\_P B13 MIPI\_DSI\_TX3\_P
DSI\_CLK\_N A11 MIPI\_DSI\_CLK\_N
DSI\_CLK\_P B11 MIPI\_DSI\_CLK\_P
#### HDMI connection diagram
#### DSI/HDMI Bridge Part number: **LT8912B** #### {{@134#bkmrk-i2c4-1}} {{@134#bkmrk-device-name%3A-%2Fdev%2Fi2-2}} {{@134#bkmrk-signal-processor-pin-4}} #### {{@134#bkmrk-i2c3}} {{@134#bkmrk-device-name%3A-%2Fdev%2Fi2}} {{@134#bkmrk-signal-processor-pin-2}} ### ETHERNET‎ The device is equipped with a RJ45 connector placed on the side of the device. The diode on the front panel indicates ETHERNET's operation. #### RJ45 connector location [![image.png](https://doc.redisage.com/uploads/images/gallery/2025-07/scaled-1680-/8kqimage.png)](https://doc.redisage.com/uploads/images/gallery/2025-07/8kqimage.png) #### ETHERNET connection diagram
### GSM The device is equipped with the SIM7600E module connected with the miniPCIE connector. Its features: - operation of protocols: CP, UDP, PPP, HTTP, FTP, MQTT, SMS, Mail - GNSS (GPS, GLONASS, BeiDou) positioning - the microSIM card can be installed - the device can be expanded with an antenna - LED on the front panel indicates GSM operation Device name: **SIM7600E** #### MicroSIM connector [![image.png](https://doc.redisage.com/uploads/images/gallery/2026-03/scaled-1680-/sEAimage.png)](https://doc.redisage.com/uploads/images/gallery/2026-03/sEAimage.png)
**Function** **Processor pin** **Default function**
USB power switch control F23 USB2\_VBUS
USB data differential pair negative A23 USB2\_D\_N
USB data differential pair positive B23 USB2\_D\_P
#### GSM connection diagram
#### USB HUB Part number: **USB2533I-1080AEN** #### {{@134#bkmrk-i2c4-1}} {{@134#bkmrk-device-name%3A-%2Fdev%2Fi2-2}} {{@134#bkmrk-signal-processor-pin-4}} ### MicroSD slot The device is equipped with a microSD card slot, connected directly to the CPU. [![image.png](https://doc.redisage.com/uploads/images/gallery/2026-03/scaled-1680-/0eOimage.png)](https://doc.redisage.com/uploads/images/gallery/2026-03/0eOimage.png)
**Function** **Processor pin** **Default function**
SD data line 0AB23SD2\_DATA0
SD data line 1AB24SD2\_DATA1
SD data line 2V24SD2\_DATA2
SD data line 3V23SD2\_DATA3
SD command lineW24SD2\_CMD
SD clockW23SD2\_CLK
### Wi-Fi‎/2.4G The SOM is equipped with a Wi-Fi/2.4G module and can be connected to the dedicated IPX antenna connector or expanded with a Wi-Fi antenna which takes the place of digital inputs no. 1 and 2. The module is dual-band and operates on the frequencies of 2.4 and 5 GHz in 802.11.ac/a/b/g/n standard. The antennas can also be connected directly to the GSM module depending on the current needs. #### Wi-Fi connections diagram
#### Wi-Fi module Part number: **Sterling-LWB5** ### Digital inputs The device is equipped with a 5-pin digital inputs (DI) connector with a maximum voltage of 30 V and a dry contact. Input signals connect directly to the CPU. #### DIs location on the connector [![image.png](https://doc.redisage.com/uploads/images/gallery/2025-07/scaled-1680-/J9Yimage.png)](https://doc.redisage.com/uploads/images/gallery/2025-07/J9Yimage.png)
**DI connector pin** **Processor pin** **User-space name**
DI1 AC22 gpiochip3 26 "DI1"
DI2 AD23 gpiochip3 24 "DI2"
DI3 AB22 gpiochip3 22 "DI3"
DI4 AD15 gpiochip2 25 "DI4"
DI5 AC13 gpiochip2 24 "DI5"
#### DI circuit block schematic
- R1 - push-up resistor 47 kΩ ### Digital inputs/outputs The device is equipped with 7 digital input/output (DIO) connectors. They can operate as: - digital input with a maximal voltage of 30 V and a dry contact - digital Vin output with a maximal current of 200 mA #### DIOs location on the connector [![image.png](https://doc.redisage.com/uploads/images/gallery/2025-07/scaled-1680-/3Q1image.png)](https://doc.redisage.com/uploads/images/gallery/2025-07/3Q1image.png)
**DIO connector pin** **Input** **Output**
**User-space name** **Expander E pin** **User-space name** **Expander A pin**
DIO1 gpiochip5 9 24 gpiochip7 1 1
DIO2 gpiochip5 10 25 gpiochip7 2 2
DIO3 gpiochip5 11 28 gpiochip7 3 3
DIO4 gpiochip5 12 1 gpiochip7 4 4
DIO5 gpiochip5 13 2 gpiochip7 5 5
DIO6 gpiochip5 14 3 gpiochip7 6 6
DIO7 gpiochip5 15 4 gpiochip7 7 7
#### DIO circuit block schematic
- F1 - 200 mA fuse - R1 - pull-up resistor 10 kΩ - R2 - pull-up resistor 47 kΩ #### [{{@136#bkmrk-expander-e}}](https://doc.redisage.com/link/136#bkmrk-expander-e) The circuit's inputs are connected to the expander E via the I2C3 interface. #### [{{@136#bkmrk-expander-a}}](https://doc.redisage.com/link/136#bkmrk-expander-a) Outputs of the circuit are connected to the expander A via the SPI1 interface. ### Universal inputs/outputs The device is equipped with 4 universal analog-digital inputs/outputs (UIOs). They can operate as: - DC voltage inputs for voltage in the range of 0-10 V with the input resistance of 100 kΩ - current inputs for current in the range of 0-4-20 mA with the input resistance of 200 Ω - current outputs with the range of 4-20 mA - temperature inputs of sensors: Pt1000, Ni1000, KTY, NTC - resistance inputs with the range of 0-5000 Ω - dry contact inputs - analog to digital converters with 24-bit resolution - digital to analog converters with 12-bit resolution Voltage is measured using a 2-channel analog-to-digital converter with 24-bit resolution. A current value can be set using a 4-channel digital-to-analog converter. #### UIOs location on the connector [![image.png](https://doc.redisage.com/uploads/images/gallery/2025-07/scaled-1680-/yrmimage.png)](https://doc.redisage.com/uploads/images/gallery/2025-07/yrmimage.png) #### Diagram of UIO circuit
- R1 - 200 Ω/1% measurement resistor - R2 - 100 kΩ/1% measurement resistor - R3 - switchable resistor for changing range of current sources (649 Ω/1% or 1,649 Ω/1%) #### User-space access Analog-Digital Converter A Device name: **/sys/bus/iio/devices/iio:device0** Analog-Digital Converter B Device name: **/sys/bus/iio/devices/iio:device1** Digital-Analog Converter A Device name: **/sys/bus/iio/devices/iio:device2** #### Possible configurations Switching to particular modes of the circuit is realized by “Set voltage input”, “Set current input”, “Current enable”, “Set R3 resistance value” and “Set current value” signals.
**Configuration signal** **Modes of operation**
**DI dry contact** **AI 0-10 V** **AI 0-4-20 mA** **AO 4-20 mA / temperature\* / resistance**
Set voltage input 0 1 0 0
Set current input 0 1 0 1
Current enable 1 0 0 1
Set R3 resistance value 1 X X 1 or 0\*\*
Set current value 12-bit value\*\*\* X X 12-bit value\*\*\*
\* by measuring resistance \*\* 1 for 1,649 kΩ/1% or 0 for 649 Ω/1% resistor \*\*\* depends on the sensor (see examples for more) - X - any value - DI - digital input - AI - analog input - AO - analog output
**UIO connector pin** **Configuration signal** **Expander C pin**
UIO1 Current enable 20
Set voltage input 19
Set current input 27
Set R3 resistance value 21
UIO2 Current enable 3
Set voltage input 22
Set current input 28
Set R3 resistance value 4
UIO3 Current enable 23
Set voltage input 17
Set current input 1
Set R3 resistance value 18
UIO4 Current enable 26
Set voltage input 24
Set current input 2
Set R3 resistance value 25
#### [{{@136#bkmrk-expander-c}}](https://doc.redisage.com/link/136#bkmrk-expander-c) The circuit's inputs are connected to the expander C via the I2C2 interface. #### {{@134#bkmrk-i2c4}} {{@134#bkmrk-device-name%3A-%2Fdev%2Fi2-1}} {{@134#bkmrk-signal-processor-pin-3}} #### {{@134#bkmrk-i2c3}} {{@134#bkmrk-device-name%3A-%2Fdev%2Fi2}} {{@134#bkmrk-signal-processor-pin-2}} # Internal Devices ## {{@273#bkmrk-tiger-city-imx-embed}} - [{{@166#bkmrk-internal-expansion-c}}](https://doc.redisage.com/link/166#bkmrk-internal-expansion-c) - [{{@166#bkmrk-watchdog-%2B-reset}}](https://doc.redisage.com/link/166#bkmrk-watchdog-%2B-reset) - [{{@166#bkmrk-eeprom%E2%80%8E%E2%80%8E}}](https://doc.redisage.com/link/166#bkmrk-eeprom%E2%80%8E%E2%80%8E) - [{{@166#bkmrk-flash}}](https://doc.redisage.com/link/166#bkmrk-flash) - [{{@166#bkmrk-rtc}}](https://doc.redisage.com/link/166#bkmrk-rtc) - [{{@166#bkmrk-esp32-microcontrolle}}](https://doc.redisage.com/link/166#bkmrk-esp32-microcontrolle) - [{{@166#bkmrk-tpm-2.0}}](https://doc.redisage.com/link/166#bkmrk-tpm-2.0) - [{{@166#bkmrk-secure-element-to136}}](https://doc.redisage.com/link/166#bkmrk-secure-element-to136) - [{{@166#bkmrk-buzzer}}](https://doc.redisage.com/link/166#bkmrk-buzzer) ### Internal expansion connector Part number: **FH1234-221CWG0MUT01** #### Internal expansion connector connections diagram
#### Internal expansion connector connections table
**Connector pin** **Description**
1 GND
2 VIN
3 GND
4 SPI1 MOSI
5 GND
6 SPI1 SCLK
7 GND
8 SPI1 MISO
9 GND
10 RTC battery power supply
11 External watchdog reset
12 NC
13 GND
14 NC
15 NC
16 NC
17 GPIO4 IO25
18 GND
19 GPIO1 IO07
20 GPIO4 IO21
21 GPIO5 IO09
22 Global reset
23 GND
24 I2C3 SDA
25 I2C3 SCL
26 GND
27 +3V3
28 GND
29 USB3 positive pole
30 USB3 negative pole
31 GND
32 +20V
33 UIO reset
34 NC
35 NC
36 +1V8
37 +1V8
38 GND
39 +5V
40 +5V
41 GND
42 GND
43 VIN
44 GND
### Watchdog + reset The device is equipped with a watchdog and a reset circuit. #### Watchdog and reset circuit connections diagram
#### CPU connections table
**Signal** **Default function** **User-space name **
ESP32\_WDI GPIO1\_IO01 gpiochip0 1 ESP32\_WDI
SOM\_GLOB\_NRST GPIO5\_IO02 gpiochip4 2 GLOBAL\_NRST
GPIO0 GPIO3\_IO22 gpiochip2 22 ESP\_GPIO0
GPIO2 GPIO3\_IO20 gpiochip2 20 ESP\_GPIO2
ESP\_CHIP\_PU GPIO4\_IO20 gpiochip3 20 ESP\_CHIP\_PU
#### ESP32 reset The device is equipped with an ESP32 microcontroller as a watchdog. ### EEPROM‎‎ The device is equipped with 2 EEPROM memory modules. EEPROM B is read-only and reserved for the producer's purposes. #### EEPROM device Part number: **M24C02-RMC6** [![625c3c1e-7881-4030-9874-e9a294456278.png](https://doc.redisage.com/uploads/images/gallery/2024-04/scaled-1680-/625c3c1e-7881-4030-9874-e9a294456278.png)](https://doc.redisage.com/uploads/images/gallery/2024-04/625c3c1e-7881-4030-9874-e9a294456278.png) #### EEPROM A connections table
**EEPROM pin** **Description** **User-space name**
1 Address pin 0 (GND) X
2 Address pin 1 (+3V3) X
3 Address pin 2 (+3V3) X
5 I2C2 data X
6 I2C2 clock X
7 EEPROM write-protect gpiochip0 2
#### EEPROM B (EEPROM SN) connections table
**EEPROM pin** **Description** **User-space name**
1 Address pin 0 (GND) X
2 Address pin 1 (+3V3) X
3 Address pin 2 (GND) X
5 I2C2 data X
6 I2C2 clock X
7 EEPROM write-protect (pull-up) X
#### EEPROM connection diagram
#### User-space access EEPROM device name: **/sys/bus/nvmem/devices/1-00561** EEPROM device address: **0x56** #### [{{@134#bkmrk-i2c3}}](https://doc.redisage.com/link/134#bkmrk-i2c3) EEPROMs A and B are connected to the CPU with the I2C2 interface. ### FLASH Part number: **W25Q64JVSSIQ** [![image.png](https://doc.redisage.com/uploads/images/gallery/2024-07/scaled-1680-/image.png)](https://doc.redisage.com/uploads/images/gallery/2024-07/image.png) #### FLASH connections table
**FLASH pin** **Description** **User-space name**
1 SPI1\_CS0 gpiochip2 21
2 SPI1\_MISO X
3 SPI1\_WP X
5 SPI1\_MOSI X
6 SPI1\_SCLK X
7 SPI1\_HOLD X
#### FLASH connection diagram
#### User-space access FLASH device name: **/dev/mtdblock0** #### [{{@134#bkmrk-spi1}}](https://doc.redisage.com/link/134#bkmrk-spi1) FLASH is connected to the CPU with the SPI1 interface. ### RTC The device is equipped with a real-time clock operating at 32.768 kHz with a tolerance of 20 ppm. The RTC clock is connected to a DR2032 battery which serves as its power supply. #### RTC device Part number: **DS1338** #### RTC connection diagram
#### User-space access Device name: **/sys/class/rtc/rtc0** Device address: **0x68** #### RTC connections table
**RTC pin** **Description**
1 Clock oscillator pin no. 1
2 Clock oscillator pin no. 2
3 Battery power pin
5 I2C3 data
6 I2C3 clock
#### [{{@134#bkmrk-i2c4}}](https://doc.redisage.com/link/134#bkmrk-i2c4) The real-time clock is connected to the CPU with the I2C3 interface. ### ESP32 microcontroller The device is equipped with an internal ESP32 microcontroller that can be used for internal purposes. #### ESP32 device Part number: **ESP32-DOWD** [![a7b3a58b-200b-44dc-8468-bd39bc498805.png](https://doc.redisage.com/uploads/images/gallery/2024-04/scaled-1680-/a7b3a58b-200b-44dc-8468-bd39bc498805.png)](https://doc.redisage.com/uploads/images/gallery/2024-04/a7b3a58b-200b-44dc-8468-bd39bc498805.png) #### ESP32 connections table
**ESP32 pin** **Description**
8 ESP\_P\_DETECT
9 ESP\_CHIP\_PU
14 ESP32\_WDT\_EN
15 ESP32\_WDI
22 ESP\_GPIO2
23 ESP\_GPIO0
24 RESET\_WDT
25 LED\_ESP
26 VDD\_SDIO
28 ESP\_SPI\_HD
29 ESP\_SPI\_WP
30 ESP\_SPI\_CS0
31 ESP\_SPI\_CLK
32 ESP\_SPI\_Q
33 ESP\_SPI\_D
38 I2C4\_SCL
39 I2C4\_SDA
40 ESP\_CONSOLE\_RX
41 ESP\_CONSOLE\_TX
#### ESP32 connections diagram
#### CPU connections table
**Signal** **CPU pin** **Default function** **User-space name**
ESP\_GPIO\_0 AC14GPIO3\_IO22gpiochip2 22
ESP\_GPIO\_2AC15GPIO3\_IO20gpiochip2 20
ESP32\_WDI AF14GPIO1\_IO01gpiochip0 1
ESP32\_WDT\_EN AF13 GPIO1\_IO03 gpiochip0 3
#### [{{@134#bkmrk-i2c4-1}}](https://doc.redisage.com/link/134#bkmrk-i2c4-1) The microcontroller is connected to the CPU via the I2C4 interface. #### [{{@134#bkmrk-uart3-1}}](https://doc.redisage.com/link/134#bkmrk-uart3-1) The microcontroller is connected to the CPU via the UART3 interface. ### TPM 2.0 The device is equipped with a trusted platform module in 2.0 standard. #### TPM device Part number: **SLM9670** [![579d062d-a70c-4778-a1bd-8d52a8a756ff.png](https://doc.redisage.com/uploads/images/gallery/2024-04/scaled-1680-/579d062d-a70c-4778-a1bd-8d52a8a756ff.png)](https://doc.redisage.com/uploads/images/gallery/2024-04/579d062d-a70c-4778-a1bd-8d52a8a756ff.png) #### TPM connections table
**TPM pin** **Description**
17 Reset
18 TPM\_IRQ
19 SPI2 clock
20 SPI2 chip select 0
21 SPI2 master out slave in
24 SPI2 master in slave out
#### User-space access Device name: **/sys/class/tpm** #### TPM connection diagram
#### CPU connections table
**Signal** **CPU pin** **Default function** **User-space name**
TPM\_IRQ AC24 GPIO4\_IO23 gpiochip3 23
SPI2\_CS0\_TPM A6 GPIO5\_IO13 gpiochip4 13
#### [{{@134#bkmrk-%C2%A0}}](https://doc.redisage.com/link/134#bkmrk-%C2%A0) The trusted platform module is connected to the CPU with the SPI2 interface. ### Secure element TO136 The device is equipped with a secure element that can be used for data encoding. #### Secure element device Part number: **IDEMIA TO136** **[![0e30de29-719d-44cf-bec2-d4451bfabdb8.png](https://doc.redisage.com/uploads/images/gallery/2024-04/scaled-1680-/0e30de29-719d-44cf-bec2-d4451bfabdb8.png)](https://doc.redisage.com/uploads/images/gallery/2024-04/0e30de29-719d-44cf-bec2-d4451bfabdb8.png)** #### Secure element connections table
**Secure element pin** **Description**
1 I2C4 clock
2 I2C4 data
3 +3V3
6 IDLE/BUSY state report
#### User-space access Device address: 0x50 #### Secure element connections diagram
#### [{{@136#bkmrk-expander-e}}](https://doc.redisage.com/link/136#bkmrk-expander-e) The secure element is connected to the Expander E connected to the CPU via the I2C3 interface. #### [{{@134#bkmrk-i2c4-1}}](https://doc.redisage.com/link/134#bkmrk-i2c4-1) The secure element is connected to the CPU via the I2C4 interface. ### Buzzer The device is equipped with a buzzer. #### Buzzer device Part number: **LD-BZEG-0905** #### User-space access Device name: **gpiochip3 7** Label: **"BUZZER"** #### Buzzer connection diagram
# Front Panel ## {{@273#bkmrk-tiger-city-imx-embed}} ### View of the front panel [![image.png](https://doc.redisage.com/uploads/images/gallery/2026-03/scaled-1680-/l11image.png)](https://doc.redisage.com/uploads/images/gallery/2026-03/l11image.png) ### Components of the front panel - [{{@135#bkmrk-dip-switch}}](https://doc.redisage.com/link/135#bkmrk-dip-switch) - [{{@135#bkmrk-signal-leds}}](https://doc.redisage.com/link/135#bkmrk-signal-leds) - [{{@135#bkmrk-oled-display}}](https://doc.redisage.com/link/135#bkmrk-oled-display) - [{{@135#bkmrk-%C2%A0}}](https://doc.redisage.com/link/135#bkmrk-%C2%A0) - [{{@135#bkmrk-reset-button}}](https://doc.redisage.com/link/135#bkmrk-reset-button) ### DIP switches The device has DIP switches on the front panel which enable the control of various key functions such as: - booting mode choice - microUSB signal choice - choosing Linux console or RS232 signal - user-written code #### DIP switches placement on the front panel [![image.png](https://doc.redisage.com/uploads/images/gallery/2026-03/scaled-1680-/3HJimage.png)](https://doc.redisage.com/uploads/images/gallery/2026-03/3HJimage.png) #### Switch options
**Switch No.** **Positions** **Description**
1 OFF - eMMC boot ON - SD card boot Boot select - switching between booting device
2 OFF - USB1 OTG ON - UART4 (Linux console) USB select - microUSB signal choice
3 OFF - UART1 (SOM user) ON - UART4 (Linux console) RS232 - SOM UART RS232 select
4 OFF - UART2 RS232 user ON - ESP32 console RS232 - SOM UART RS232/ESP32 select
5 Unassigned Currently not used
6-8 OFF/ON User options
#### Connections diagram
#### [{{@136#bkmrk-expander-d}}](https://doc.redisage.com/link/136#bkmrk-expander-d) User-defined DIP switch options are connected to the expander D which is connected to the CPU via the I2C3 interface. #### [{{@133#bkmrk-usb1}}](https://doc.redisage.com/link/133#bkmrk-usb1) The USB MUX select 1 and the USB MUX select 2 signals are connected to the multiplexer A associated with USB1. ### Signal LEDs The device is equipped with 8 LEDs. 2 of these LEDs are placed on the mainboard, while the other 6 are on the front panel of the HMI board. #### LEDs location [![image.png](https://doc.redisage.com/uploads/images/gallery/2026-03/scaled-1680-/LoPimage.png)](https://doc.redisage.com/uploads/images/gallery/2026-03/LoPimage.png) #### LEDs connections
**Description** **User-space name** **Label**
Power LEDgpiochip6 9 "LED\_5V"
CPU LEDgpiochip0 3 "LED\_MAINBOARD"
User LED 1 G gpiochip6 10 "LED3\_GREEN"
User LED 1 R gpiochip6 5 "LED3\_RED"
User LED 1 B gpiochip6 12 "LED3\_BLUE"
User LED 2 G gpiochip6 13 "LED4\_GREEN"
User LED 2 R gpiochip6 11 "LED4\_RED"
User LED 2 B gpiochip6 15 "LED4\_BLUE"
#### LED connection diagram
#### [{{@166#bkmrk-esp32-microcontrolle}}](https://doc.redisage.com/link/166#bkmrk-esp32-microcontrolle) ESP LED is connected directly to the ESP32 microcontroller. #### [{{@133#bkmrk-%C2%A0-4}}](https://doc.redisage.com/link/133#bkmrk-%C2%A0-4) GSM LED is connected directly to the GSM modem. #### [{{@133#bkmrk-%C2%A0-3}}](https://doc.redisage.com/link/133#bkmrk-%C2%A0-3) ETH activity LED and ETH link LED are connected directly to the ETHERNET physical layer. #### [{{@136#bkmrk-expander-d}}](https://doc.redisage.com/link/136#bkmrk-expander-d) Power LED, User LED 1 and User LED2 are connected to the expander D which is connected to the CPU via the I2C3 interface. ### OLED display The device is equipped with a 0.87” black and white display with a resolution of 128x32 px. #### OLED display placement [![image.png](https://doc.redisage.com/uploads/images/gallery/2026-03/scaled-1680-/1jnimage.png)](https://doc.redisage.com/uploads/images/gallery/2026-03/1jnimage.png) #### OLED device Part number: **SCE087002-V01** **[![a22f77ff-98ae-4a34-b0e5-0d5916ee80bd.png](https://doc.redisage.com/uploads/images/gallery/2024-04/scaled-1680-/a22f77ff-98ae-4a34-b0e5-0d5916ee80bd.png)](https://doc.redisage.com/uploads/images/gallery/2024-04/a22f77ff-98ae-4a34-b0e5-0d5916ee80bd.png)** #### OLED connections table
**OLED pin** **Description** **User-space name**
RES# RESET X
SCL I2C3 clock X
SDA I2C3 data X
VCC OLED ON/OFF gpiochip6 14, "OLED\_EN"
#### OLED connections diagram
#### [{{@136#bkmrk-expander-d}}](https://doc.redisage.com/link/136#bkmrk-expander-d) The OLED display is connected to Expander D which is connected to the CPU via the I2C3 interface. #### [{{@134#bkmrk-i2c4}}](https://doc.redisage.com/link/134#bkmrk-i2c4) The OLED display is directly connected to the CPU via the I2C3 interface. ### Joystick The device is equipped with a joystick for controlling its functions. #### Placement [![image.png](https://doc.redisage.com/uploads/images/gallery/2026-03/scaled-1680-/blkimage.png)](https://doc.redisage.com/uploads/images/gallery/2026-03/blkimage.png) #### Device Part number: **INT-1500D** [![9433a74a-a6fe-4496-9718-ff54f38e8817.png](https://doc.redisage.com/uploads/images/gallery/2024-04/scaled-1680-/9433a74a-a6fe-4496-9718-ff54f38e8817.png)](https://doc.redisage.com/uploads/images/gallery/2024-04/9433a74a-a6fe-4496-9718-ff54f38e8817.png) #### Connections table
**Joystick signal** **Expander D pin** **User-space name** **Label**
Right 20 gpiochip6 3 "JOY\_RIGHT"
Up 18 gpiochip6 1 "JOY\_UP"
Left 17 gpiochip6 0 "JOY\_LEFT"
Down 19 gpiochip6 2 "JOY\_DOWN"
Push 21 gpiochip6 4 "JOY\_PUSH"
#### Connection diagram
#### [{{@136#bkmrk-expander-d}}](https://doc.redisage.com/link/136#bkmrk-expander-d) Joystick is connected to the Expander D which is connected to the CPU via the I2C3 interface. ### Reset button The device has a reset button on the front panel. #### Reset button location [![image.png](https://doc.redisage.com/uploads/images/gallery/2026-03/scaled-1680-/KDFimage.png)](https://doc.redisage.com/uploads/images/gallery/2026-03/KDFimage.png) #### Connections diagram
#### [{{@166#bkmrk-watchdog-%2B-reset}}](https://doc.redisage.com/link/166#bkmrk-watchdog-%2B-reset) The reset button is connected directly to the reset circuit. # Expanders ## {{@273#bkmrk-tiger-city-imx-embed}} - [{{@136#bkmrk-expander-a}}](https://doc.redisage.com/link/136#bkmrk-expander-a) - [{{@136#bkmrk-expander-b}}](https://doc.redisage.com/link/136#bkmrk-expander-b) - [{{@136#bkmrk-expander-c}}](https://doc.redisage.com/link/136#bkmrk-expander-c) - [{{@136#bkmrk-expander-d}}](https://doc.redisage.com/link/136#bkmrk-expander-d) - [{{@136#bkmrk-expander-e}}](https://doc.redisage.com/link/136#bkmrk-expander-e) - [{{@136#bkmrk-expander-f}}](https://doc.redisage.com/link/136#bkmrk-expander-f) ### Expander A Part number: **74HC595BQ** #### Expander A diagram [![26a320af-c494-41e3-9a7b-b14fd0cb1bb5.png](https://doc.redisage.com/uploads/images/gallery/2024-04/scaled-1680-/26a320af-c494-41e3-9a7b-b14fd0cb1bb5.png)](https://doc.redisage.com/uploads/images/gallery/2024-04/26a320af-c494-41e3-9a7b-b14fd0cb1bb5.png) #### Expander A pins description
**Pin** **Type** **Usage** **User-space name** **Description**
1 Q1 DO1 gpiochip8 1 Digital output 1
2 Q2 DO2 gpiochip8 2 Digital output 2
3 Q3 DO3 gpiochip8 3 Digital output 3
4 Q4 DO4 gpiochip8 4 Digital output 4
5 Q5 DO5 gpiochip8 5 Digital output 5
6 Q6 DO6 gpiochip8 6 Digital output 6
7 Q7 DO7 gpiochip8 7 Digital output 7
9 Q7S NC X Not connected
10 MR/ NRST\_GLOBAL X Reset
11 SHCP SPI1\_SCLK X SPI clock
12 STCP SPI1\_CS1 X SPI chip select
13 OE/ GND X Output enable
14 DS SPI1\_MOSI X SPI master out slave in
15 Q0 MUX\_DIO\_SEL gpiochip8 0 MUX\_PWM selection signal
16 VCC +3V3 X Power supply
#### {{@134#bkmrk-spi1}} {{@134#bkmrk-signal-processor-pin}} ### Expander B Part number: **SC16IS752IBS** #### Expander B diagram [![image.png](https://doc.redisage.com/uploads/images/gallery/2024-07/scaled-1680-/VIbimage.png)](https://doc.redisage.com/uploads/images/gallery/2024-07/VIbimage.png) #### Expander B pins description
**Pin** **Type** **Usage** **User-space name** **Description**
1 RXA(I) RS485\_UART1\_RX X RS485 UART1 RX
2 RESET/ RS485\_NRST X Reset
3 XTAL1(I) TXCO\_OUT X Oscillator output
4 XTAL2(O) NC X Not connected
5 VDD +3V3 X Power supply
6 I2C / SPI/ GND X Ground
7 CS/ / A0 SPI2\_CS1 X SPI chip select
8 SI / A1 SPI2\_MOSI X SPI master out slave in
9 SO SPI2\_MISO X SPI master in slave out
10 SCL / SCLK SPI2\_SCLK X SPI clock
11 SDA / VSS GND X Ground
12 VSS GND X Ground
14 IRQ/ RS485\_INT X RS485 interrupt
15 CTSB/ NC X Not connected
16 RTSB/ RS485\_UART2\_RTS X RS485 UART2 RTS
17 GPIO0 / DSRB/ NC X Not connected
18 GPIO1 / DTRB/ NC X Not connected
19 GPIO2 / CDB/ NC X Not connected
20 GPIO3 / RIB/ NC X Not connected
22 TXB(O) RS485\_UART2\_TX X RS485 UART2 TX
23 RXB(I) RS485\_UART2\_RX X RS485 UART2 RX
24 GPIO4 / DSRA/ NC X Not connected
25 GPIO5 / DTRA/ NC X Not connected
26 GPIO6 / CDA/ NC X Not connected
27 GPIO7 / RIA/ NC X Not connected
30 RTSA/ RS485\_UART1\_RTSXRS485 UART1 RTS
31 CTSA/ NC X Not connected
32 TXA(O) RS485\_UART1\_TX X RS485 UART1 TX
#### {{@134#bkmrk-%C2%A0}} {{@134#bkmrk-signal-processor-pin-1}} ### Expander C Part number: **MCP23017-E/ML** #### Expander C diagram [![87288898-dff2-4113-9f01-a2ae6c417343.png](https://doc.redisage.com/uploads/images/gallery/2024-04/scaled-1680-/87288898-dff2-4113-9f01-a2ae6c417343.png)](https://doc.redisage.com/uploads/images/gallery/2024-04/87288898-dff2-4113-9f01-a2ae6c417343.png) #### Expander C pins description
**Pin** **Port** **Type** **User-space name** **Description**
1 GPB4 GPIO gpiochip5 12 UIO4 voltage
2 GPB5 GPIO gpiochip5 13 UIO4 current
3 GPB6 GPIO gpiochip5 14 UIO4 resistance
4 GPB7 GPIO gpiochip5 15 UIO3 resistance
5 VDD +3V3 X Power supply
6 VSS GND X Ground
7 NC NC X Not connected
8 SCK GPIO X I2C clock
9 SDA GPIO X I2C data
10 NC NC X Not connected
11 A0 GND X Address bit 0
12 A1 GND X Address bit 1
13 A2 GND X Address bit 2
14 RESET/ EXP2\_NRST X Reset
15 INTB NC X Not connected
16 INTA NC X Not connected
17 GPA0 GPIO gpiochip5 0 UIO2 resistance
18 GPA1 GPIO gpiochip5 1 UIO1 resistance
19 GPA2 GPIO gpiochip5 2 UIO1 voltage
20 GPA3 GPIO gpiochip5 3 UIO2 voltage
21 GPA4 GPIO gpiochip5 4 UIO3 voltage
22 GPA5 GPIO gpiochip5 5 UIO1 current
23 GPA6 GPO gpiochip5 6 UIO4 I source
24 GPA7 GPIO gpiochip5 7 UIO3 current
25 GPB0 GPIO gpiochip5 8 UIO2 current
26 GPB1 GPO gpiochip5 9 UIO1 I source
27 GPB2 GPO gpiochip5 10 UIO2 I source
28 GPB3 GPO gpiochip5 11 UIO3 I source
#### {{@134#bkmrk-i2c3}} {{@134#bkmrk-device-name%3A-%2Fdev%2Fi2}} {{@134#bkmrk-signal-processor-pin-2}} ### Expander D Part number: **MCP23017** #### Expander D diagram [![9863a4a5-4f9b-4981-bbdd-6a5ed3cc77b1.png](https://doc.redisage.com/uploads/images/gallery/2024-04/scaled-1680-/9863a4a5-4f9b-4981-bbdd-6a5ed3cc77b1.png)](https://doc.redisage.com/uploads/images/gallery/2024-04/9863a4a5-4f9b-4981-bbdd-6a5ed3cc77b1.png) #### Expander D pins description
**Pin** **Port** **Type** **User-space name** **Description**
1 GPB4 GPO gpiochip6 12 LED3 BLUE ON / OFF
2 GPB5 GPO gpiochip6 13 LED4 GREEN ON / OFF
3 GPB6 GPO gpiochip6 14 OLED ON / OFF
4 GPB7 GPO gpiochip6 15 LED4 BLUE ON / OFF
5 VDD +3V3 X Power supply
6 VSS GND X Ground
7 NC1 NC X Not connected
8 SCK GPIO X I2C clock
9 SDA GPIO X I2C data
10 NC2 NC X Not connected
11 A0 GND X Address bit 0
12 A1 GND X Address bit 1
13 A2 GND X Address bit 2
14 RESET/ NRST\_GLOBAL X Reset
15 INTB HMI\_IRQ X Interrupt B
16 INTA HMI\_IRQ X Interrupt A
17 GPA0 GPI gpiochip6 0 Joystick left input
18 GPA1 GPI gpiochip6 1 Joystick up input
19 GPA2 GPI gpiochip6 2 Joystick down input
20 GPA3 GPI gpiochip6 3 Joystick right input
21 GPA4 GPI gpiochip6 4 Joystick push input
22 GPA5 GPO gpiochip6 5 LED3 RED ON / OFF
23 GPA6 GPI gpiochip6 6 DIP switch 6 input
24 GPA7 GPI gpiochip6 7 DIP switch 7 input
25 GPB0 GPI gpiochip6 8 DIP switch 8 input
26 GPB1 GPO gpiochip6 9 LED 5 V power supply ON / OFF
27 GPB2 GPO gpiochip6 10 LED3 GREEN ON / OFF
28 GPB3 GPO gpiochip6 11 LED4 RED ON / OFF
#### {{@134#bkmrk-i2c4}} {{@134#bkmrk-device-name%3A-%2Fdev%2Fi2-1}} {{@134#bkmrk-signal-processor-pin-3}} ### Expander E Part number: **MCP23017-E/ML** #### Expander E diagram [![92e3390d-322f-46b4-a3d4-4e39611cf250.png](https://doc.redisage.com/uploads/images/gallery/2024-04/scaled-1680-/92e3390d-322f-46b4-a3d4-4e39611cf250.png)](https://doc.redisage.com/uploads/images/gallery/2024-04/92e3390d-322f-46b4-a3d4-4e39611cf250.png) #### Expander E pins description
**Pin** **Port** **Type** **User-space name** **Description**
1 GPB4 GPI gpiochip5 12 Digital input 4 (DIO circuit)
2 GPB5 GPI gpiochip5 13 Digital input 5 (DIO circuit)
3 GPB6 GPI gpiochip5 14 Digital input 6 (DIO circuit)
4 GPB7 GPI gpiochip5 15 Digital input 7 (DIO circuit)
5 VDD +3V3 X Power supply
6 VSS GND X Ground
7 NC NC X Not connected
8 SCK GPIO X I2C clock
9 SDA GPIO X I2C data
10 NC NC X Not connected
11 A0 +3V3 X Address bit 0
12 A1 +3V3 X Address bit 1
13 A2 GND X Address bit 2
14 RESET/ EXP1\_NRST X Reset
15 INTB GPIO\_EXP\_INT X Interrupt B
16 INTA GPIO\_EXP\_INT X Interrupt A
17 GPA0 GPO gpiochip5 0 Termination RS485\_4 ON / OFF
18 GPA1 GPO gpiochip5 1 Termination RS485\_3 ON / OFF
19 GPA2 GPO gpiochip5 2 Termination RS485\_2 ON / OFF
20 GPA3 GPO gpiochip5 3 Termination RS485\_1 ON / OFF
21 GPA4 NC X Not connected
22 GPA5 NC X Not connected
23 GPA6 GPO gpiochip5 6 Secure chip idle/busy
24 GPA7 GPI gpiochip5 7 Digital input 1 (DIO circuit)
25 GPB0 GPO gpiochip5 8 Digital input 2 (DIO circuit)
26 GPB1 GPI gpiochip5 9 SD detect
27 GPB2 GPI gpiochip5 10 VIN level error
28 GPB3 GPI gpiochip5 11 Digital input 3 (DIO circuit)
#### {{@134#bkmrk-i2c4}} {{@134#bkmrk-device-name%3A-%2Fdev%2Fi2-1}} {{@134#bkmrk-signal-processor-pin-3}} ### Expander F Part number: **SC16IS752IBS** #### Expander F diagram [![image.png](https://doc.redisage.com/uploads/images/gallery/2024-07/scaled-1680-/VIbimage.png)](https://doc.redisage.com/uploads/images/gallery/2024-07/VIbimage.png) #### Expander F pins description
**Pin** **Type** **Usage** **User-space name** **Description**
1 RXA(I) RS485\_UART4\_RX X RS485 UART4 RX
2 RESET/ RS485\_NRST X Reset
3 XTAL1(I) TXCO\_OUT X Oscillator output
4 XTAL2(O) NC X Not connected
5 VDD +3V3 X Power supply
6 I2C / SPI/ GND X Ground
7 CS/ / A0 SPI2\_CS2 X SPI chip select
8 SI / A1 SPI2\_MOSI X SPI master out slave in
9 SO SPI2\_MISO X SPI master in slave out
10 SCL / SCLK SPI2\_SCLK X SPI clock
11 SDA / VSS GND X Ground
12 VSS GND X Ground
14 IRQ/ RS485\_INT X RS485 interrupt
15 CTSB/ NC X Not connected
16 RTSB/ RS485\_UART3\_RTS X RS485 UART3 RTS
17 GPIO0 / DSRB/ NC X Not connected
18 GPIO1 / DTRB/ NC X Not connected
19 GPIO2 / CDB/ NC X Not connected
20 GPIO3 / RIB/ NC X Not connected
22 TXB(O) RS485\_UART3\_TX X RS485 UART3 TX
23 RXB(I) RS485\_UART3\_RX X RS485 UART3 RX
24 GPIO4 / DSRA/ NC X Not connected
25 GPIO5 / DTRA/ NC X Not connected
26 GPIO6 / CDA/ NC X Not connected
27 GPIO7 / RIA/ NC X Not connected
30 RTSA/ RS485\_UART4\_RTSXRS485 UART4 RTS
31 CTSA/ NC X Not connected
32 TXA(O) RS485\_UART4\_TX X RS485 UART4 TX
#### {{@134#bkmrk-%C2%A0}} {{@134#bkmrk-signal-processor-pin-1}} # Connectors Designations ## {{@273#bkmrk-tiger-city-imx-embed}} ### Principle of designating connector pins Each pin designation is composed of 2 parts. #### Part 1 Choose a letter stating the type and purpose of the connector, chosen individually with ease of use by the user in mind. ##### General connectors D - digital input pin H - digital input/output pin U - universal input/output pin G - ground potential ##### RS485 A - A pin of the connector B - B pin of the connector ##### RS232 T - Tx pin of the connector R - Rx pin of the connector ##### 1-Wire 5V - +5 V voltage 1W - 1-Wire data #### Part 2 Choose a digit representing the pin on the connector. In case of more than 10 pins on the connectors, letters should be used. ### Connector designations for IMX8
**Eagle designation** **Documentation designation**
**Digital inputs connectors**
1 G
2 D1
3 D2
4 D3
5 D4
6 D5
**Digital inputs/outputs connectors**
1 H1
2 H2
3 H3
4 G
5 H4
6 H5
7 H6
8 H7
**Universal inputs/outputs connector**
1 U1
2 U2
3 G
4 U3
5 U4
**RS485 1/2 connectors**
1 A1
2 B1
3 G
4 A2
5 B2
**RS485 3/4 connectors**
1 A3
2 B3
3 G
4 A4
5 B4
**RS232 1/2 & 1-Wire connectors**
1 G
2 T1
3 R1
4 T2
5 R2
6 1W
7 5V
8 G
# Linux OS # Booting ## {{@273#bkmrk-tiger-city-imx-embed}} - [{{@143#bkmrk-emmc}}](https://doc.redisage.com/link/143#bkmrk-emmc) - [{{@143#bkmrk-sd-card}}](https://doc.redisage.com/link/143#bkmrk-sd-card) - [{{@143#bkmrk-booting-after-the-po}}](https://doc.redisage.com/link/143#bkmrk-booting-after-the-po) ### eMMC #### DIP switches positions To boot from the eMMC the DIP switch No. 1 needs to be in the position shown in the picture below.
#### Power supply Connect a power supply to the pins shown in the picture below. The suggested power supply is a DC voltage in the range of 12-24 V. {{@274#bkmrk--2}} #### First boot The connected power supply should initiate the first boot. #### Console Booting logs are displayed in the console, indicating a proper boot from the eMMC, as shown in the picture below. [![7e5e81cf-604f-4a14-853d-2bd09f1da13a.png](https://doc.redisage.com/uploads/images/gallery/2024-04/scaled-1680-/7e5e81cf-604f-4a14-853d-2bd09f1da13a.png)](https://doc.redisage.com/uploads/images/gallery/2024-04/7e5e81cf-604f-4a14-853d-2bd09f1da13a.png) ### SD card #### DIP switches positions To boot from the SD card the DIP switch No. 1 needs to be in the position shown in the picture below.
#### Power supply Connect a power supply to the pins shown in the picture below. The suggested power supply is a DC voltage in the range of 12-24 V. {{@274#bkmrk--2}} #### First boot The connected power supply should initiate the first boot. #### Console Booting logs are displayed in the console. ### Booting after the power-off command If the device is turned off by inputting the power-off command in the terminal, the previous boot methods have to be initiated via the reset button placed on the front panel. Its placement is shown in the picture below. [![image.png](https://doc.redisage.com/uploads/images/gallery/2026-03/scaled-1680-/JpQimage.png)](https://doc.redisage.com/uploads/images/gallery/2026-03/JpQimage.png) # New Page # New Page # New Page # System Console ## {{@273#bkmrk-tiger-city-imx-embed}} ### UART console #### Connecting the adapter to the device To display the console via UART an RS232 → USB adapter needs to be connected to the pins of the connector shown on the picture below. [![image.png](https://doc.redisage.com/uploads/images/gallery/2026-03/scaled-1680-/s3Oimage.png)](https://doc.redisage.com/uploads/images/gallery/2026-03/s3Oimage.png) #### Configuring COM port A serial port terminal needs to be configured with following configuration:
Bits per second 115200
Data bits8
ParityNone
Stop bits1
Then, booting from the chosen source should be realized according to the [instruction](https://doc.redisage.com/link/143#bkmrk-page-title). ### SSH console #### Finding an IP of the device The device's IP can be obtained via 2 methods: - connecting to the UART console and inputting the “ip a” command when logged as root or other user - using the joystick shown in the picture below the IP can be displayed on the front panel display [![image.png](https://doc.redisage.com/uploads/images/gallery/2026-03/scaled-1680-/2XQimage.png)](https://doc.redisage.com/uploads/images/gallery/2026-03/2XQimage.png) #### Configuring COM port The SSH terminal needs to be configured with the IP of the device. Then, booting from the chosen source should be realized according to the [instruction](https://doc.redisage.com/link/143#bkmrk-page-title). # User Management ## {{@273#bkmrk-tiger-city-imx-embed}} ### Default user The default user in Tiger is the only one available after the first boot. - login: **root** - no password ### Create new users In order to list all existing users in the system use the following command: ```bash awk -F':' '{print $1}' /etc/passwd ``` To add a new user and create a home directory for it use the following command: ```bash sudo useradd -m user_name ``` To verify that the user was created and view the user’s details use: ```bash sudo id user_name ``` To set a new password for the user use the following command: ```bash sudo passwd user_name ``` After that, logging in as a new user will be possible. The current user can be checked with the "whoami" command. ### Delete users A user and its home directory can be deleted with the following command: ```bash sudo userdel -r user_name ``` # Updating ## {{@273#bkmrk-tiger-city-imx-embed}} ### System Image A system image (`.swu` file) is required for the update. The image is protected by the image checksum and by the image signature. That means a modified image will not be accepted by the device. Only images from our source allow for updates. It is possible to transition from older images to newer ones and vice-versa. There are several ways to update Tiger: - through the Tiger console using a file on internal or external storage (eMMC or USB drive), - through the Tiger console using a file from an external server (FTP or HTTPS), - via the built-in update server. The first two options require access to the console (username and password). The third option does not require a password for the device. ### Storage (eMMC or USB drive) 1. Login to the device console 2. Insert external storage or copy the file to Tiger's storage. 3. In the console, type `swupdate -i -k /etc/default/rsakey.pub`. 4. The update will proceed automatically. ### External Server (FTP or HTTPS) 1. Login to the device console 2. For an FTP server, type `swupdate -d -u ftp:// -a :`. 3. For an HTTPS server, type `swupdate -d -u https:// -k /etc/default/rsakey.pub`. 4. The update will proceed automatically. ### Built-in Update Server 1. Connect the device to the network. 2. Launch a browser on a PC. 3. In the browser, enter `http://:8080`. 4. Select the `.swu` file from the PC storage and confirm the selection. 5. The update will proceed automatically.

Warning! Update files are the default version of firmware. All updates factory reset the device. Make sure you backup all of your important files.

# System Overview ## {{@273#bkmrk-tiger-city-imx-embed}} ### Distribution Custom Linux distribution based on the Yocto Project. Type `uname -a` to check installed version, kernel, etc. ### Supported languages - English (US) - English (GB) ### User utilities #### Text editor The default available built-in text editor on the device is `vim`. #### Wi-Fi The device is equipped with a Wi-Fi module and a NetworkManager library, which allows it to connect to nearby wireless networks. ##### How to enable and connect with WLAN: 1. Check the library status: `systemctl status NetworkManager` 2. If NetworkManager is disabled, type `systemctl start NetworkManager` 3. It is possible to enable it always with autostart: `systemctl enable NetworkManager` 4. Search available networks: `nmcli dev wifi list` 5. Connect with your chosen network: `nmcli dev wifi connect password ` 6. Check your connection status with `nmcli connection show --active` or `ifconfig` ### System libraries List of some commonly used available packages: - Network Manager - Modem Manager - Chromium - Gawk - OpenCL - Bzip2 - C++ - Python 3 - SQLite3 - OpenSSL - Perl 5 - Curl - Git - Debuginfo - glib - i2c-tools - GPIO mockup - gthread - iperf - microhttpd - rpmbuild - SSL - swupdate - Wayland - Weston - XCB - rpm-plugins - sudo - xtables And much more. All the preinstalled system libraries can be found in `/usr/lib `directory. User can install any other necessary libraries. ### Drivers System drivers can be displayed using `lsmod` command. # Restoring Factory Settings ## {{@273#bkmrk-tiger-city-imx-embed}} ##### ##### To factory reset the device, you need to reinstall the current system version or perform an update. The entire process is detailed in the [Updating](https://doc.redisage.com/books/tiger-city-imx/page/updating) section. # Building Custom System Image ## {{@273#bkmrk-tiger-city-imx-embed}} ##### ##### If you would like to ask a specific question, please visit our [Contact Us](https://doc.redisage.com/books/tiger-city-imx/page/contact-us) page for any further information. # Software Examples GitLab: C, Python and Bash examples Web app frontend Web app backend # How to Use? ## {{@273#bkmrk-tiger-city-imx-embed}} Tiger computer is provided with some basic software examples that can be used as a starting point for developing custom programs. The examples are available in: - C - Python - Bash The examples are divided into categories: - [External Interfaces](https://doc.redisage.com/link/151#bkmrk-page-title) - [Internal Devices‎](https://doc.redisage.com/link/153#bkmrk-page-title) - [Front Panel‎](https://doc.redisage.com/link/154#bkmrk-page-title) - [TCX www](https://doc.redisage.com/link/155#bkmrk-page-title) ### C examples Examples written in C can be built with CMake. Put your source files into one folder and specify its name (${SRC\_DIR} dir\_name). Then create a CMakeLists.txt file in the parent directory (an example of this file is provided below). [CMakeLists.txt](https://gitlab.soleotech.ovh/soleox/ecb-elecronic-circuits-boards/computers/tiger-city-imx/tiger-city-imx8-vertical/TCX_Software_Examples/-/blob/master/CMakeLists.txt?ref_type=heads) In the parent directory create a new folder named "build" and enter it: ```bash mkdir build && cd build ``` Next, configure your project using: ```bash cmake .. ``` Then build your project with: ```bash cmake --build . ``` After that, executable files should appear in the same folder. ```bash ./file_name ``` ### Python examples In order to execute Python files, go to the desired directory and type: ```bash python3 file_name.py ``` ### Bash examples In order to execute Bash files, go to the desired directory and type: ```bash bash file_name.sh ``` # New Page # New Page # New Page # External Interfaces ## {{@273#bkmrk-tiger-city-imx-embed}} DIO read This example shows how to use DIO (Digital Input Output) of the Tiger computer in the read mode. After running the program, the state of every DIO will be displayed. - [DIO\_read - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/DIO_read.c) - [DIO\_read - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/DIO_read.py) - [DIO\_read - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/DIO_read.sh) #### Connections In order to test, the program uses **H1 - H7** pins (diagram provided at the bottom of this page). ### DIO write This example shows how to use DIO (Digital Input Output) of the Tiger computer in the write mode. - [DIO\_write - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/DIO_write.c) - [DIO\_write - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/DIO_write.py) - [DIO\_write - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/DIO_write.sh) #### Connections In order to test, the program uses **H1 - H7** pins (diagram provided at the bottom of this page). ### DI read This example shows how to read the states of the DI (Digital Input) of the Tiger computer. After running the program, the state of every DI will be displayed. - [DI\_read - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/DI_read.c) - [DI\_read - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/DI_read.py) - [DI\_read - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/DI_read.sh) #### Connections In order to test, the program uses **D1 - D5** pins (diagram provided at the bottom of this page). ### ETHERNET This example shows how to check the Ethernet port connection of the Tiger computer. - [ETHERNET - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/ETHERNET.c) - [ETHERNET - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/ETHERNET.py) - [ETHERNET - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/ETHERNET.sh) #### Connections In order to test, the program uses the **RJ45** port (diagram provided at the bottom of this page). ### 1-WIRE This example shows how to read temperature from the DS18B20+ sensor using the 1-Wire bus of the Tiger computer. - [onewire - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/onewire.c) - [onewire - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/onewire.py) - [onewire - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/onewire.sh) #### Connections In order to test, the program uses **1W,** **5V** and **GND** pins (diagram provided at the bottom of this page). ### RS232 This example shows how to write to and read from the RS232 interface of the Tiger computer. - [RS232 - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/RS232.c) - [RS232 - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/RS232.py) - [RS232 - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/RS232.sh)

This example won’t work in the loopback connection test - an external serial monitor is needed.

#### Connections In order to test, the program uses **T1, R1, T2, R2** and **GND** pins (diagram provided at the bottom of this page). ### RS485 This example shows how to write to and read from the RS485 interface of the Tiger computer. - [RS485 - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/RS485.c) - [RS485 - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/RS485.py) - [RS485 - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/RS485.sh)

This example won’t work in the loopback connection test - an external serial monitor is needed.

#### Connections In order to test, the program uses **A1 - A4, B1 - B4** and **GND** pins (diagram provided at the bottom of this page). ### UIO AI 10 V This example shows how to use the UIO (Universal Input Output) of the Tiger computer as a voltage AI (Analog Input). - [UIO\_AI\_10V - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/UIO_AI_10V.c) - [UIO\_AI\_10V - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/UIO_AI_10V.py) - [UIO\_AI\_10V - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/UIO_AI_10V.sh) #### Connections In order to test, the program uses **U1 - U4** pins (diagram provided at the bottom of this page). ### UIO AI 20 mA This example shows how to use the UIO (Universal Input Output) of the Tiger computer as a current AI (Analog Input). - [UIO\_AI\_20mA - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/UIO_AI_20mA.c) - [UIO\_AI\_20mA - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/UIO_AI_20mA.py) - [UIO\_AI\_20mA - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/UIO_AI_20mA.sh) #### Connections In order to test, the program uses **U1 - U4** pins (diagram provided at the bottom of this page). ### UIO AO This example shows how to use the UIO (Universal Input Output) of the Tiger computer as an AO (Analog Output). - [UIO\_AO - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/UIO_AO.c) - [UIO\_AO - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/UIO_AO.py) - [UIO\_AO - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/UIO_AO.sh) #### Connections In order to test, the program uses **U1 - U4** pins (diagram provided at the bottom of this page). ### UIO DI This example shows how to use the UIO (Universal Input Output) of the Tiger computer as a DI (Digital Input). - [UIO\_DI - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/UIO_DI.c) - [UIO\_DI - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/UIO_DI.py) - [UIO\_DI - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/UIO_DI.sh) #### Connections In order to test, the program uses **U1 - U4** pins (diagram provided at the bottom of this page). ### USB This example shows how to open, write to, and read from a USB device plugged into the Tiger computer. - [USB - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/USB.c) - [USB - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/USB.py) - [USB - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/USB.sh) #### Connections In order to test, the program uses the USB port (diagram provided at the bottom of this page). ### Wi-Fi This example shows how to connect the Tiger computer to a Wi-Fi access point. - [Wi-Fi - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/WIFI.c) - [Wi-Fi - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/WIFI.py) - [Wi-Fi - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/WIFI.sh) ### Ports diagram {{@274#bkmrk-}} # Internal Devices‎ ## {{@273#bkmrk-tiger-city-imx-embed}} ### Buzzer This example shows how to use the integrated buzzer of the Tiger computer. The buzzer will generate a sound for a few seconds and then turn itself off. - [Buzzer - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/buzzer.c) - [buzzer - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/buzzer.py) - [Buzzer - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/buzzer.sh) ### EEPROM erase This example shows how to erase the EEPROM memory of the Tiger computer. - [EEPROM\_erase - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/EEPROM_erase.c) - [EEPROM\_erase - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/EEPROM_erase.py) - [EEPROM\_erase - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/EEPROM_erase.sh) ### EEPROM read This example shows how to read from the EEPROM memory of the Tiger computer. - [EEPROM\_read - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/EEPROM_read.c) - [EEPROM\_read - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/EEPROM_read.py) - [EEPROM\_read - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/EEPROM_read.sh) ### EEPROM SN read This example shows how to read from the EEPROM SN (read-only) memory of the Tiger computer. - [EEPROM\_SN\_read - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/EEPROM_SN_read.c) - [EEPROM\_SN\_read - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/EEPROM_SN_read.py) - [EEPROM\_SN\_read - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/EEPROM_SN_read.sh) ### EEPROM write This example shows how to write some sample string to the EEPROM memory of the Tiger computer. - [EEPROM\_write - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/EEPROM_write.c) - [EEPROM\_write - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/EEPROM_write.py) - [EEPROM\_write - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/EEPROM_write.sh) ### FLASH erase This example shows how to erase the FLASH memory of the Tiger computer. - [FLASH\_erase - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/FLASH_erase.c) - [FLASH\_erase - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/FLASH_erase.py) - [FLASH\_erase - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/FLASH_erase.sh) ### FLASH read This example shows how to read from the FLASH memory of the Tiger computer. - [FLASH\_read - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/FLASH_read.c) - [FLASH\_read - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/FLASH_read.py) - [FLASH\_read - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/FLASH_read.sh) ### FLASH write This example shows how to write some sample string to the FLASH memory of the Tiger computer. - [FLASH\_write - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/FLASH_write.c) - [FLASH\_write - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/FLASH_write.py) - [FLASH\_write - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/FLASH_write.sh) ### GSM reset This example shows how to reset the GSM module of the Tiger computer. - [GSM\_reset - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/GSM_reset.c) - [GSM\_reset - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/GSM_reset.py) - [GSM\_reset - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/GSM_reset.sh) ### RTC This example shows how to read date and time from the RTC (Real Time Clock) of the Tiger computer. - [RTC - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/RTC.c) - [RTC - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/RTC.py) - [RTC - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/RTC.sh) ### Watchdog This example shows how to view the watchdog service status of the Tiger computer. - [Watchdog - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/watchdog.c) - [Watchdog - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/watchdog.py) - [Watchdog - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/watchdog.sh) # Front Panel‎ ## {{@273#bkmrk-tiger-city-imx-embed}} ### DIP read This example shows how to read the states of the DIP switches of the Tiger computer’s front panel. After running the program, the state of every DIP switch will be displayed. - [DIP\_read - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/DIP_read.c) - [DIP\_read - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/DIP_read.py) - [DIP\_read - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/DIP_read.sh) ### Joystick This example shows how to get inputs from the joystick located on the front panel of the Tiger computer. - [Joystick - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/joystick.c) - [Joystick - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/joystick.py) - [joystick - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/joystick.sh) ### LED This example shows how to change the colors of the RGB LEDs located on the front panel of the Tiger computer. - [LED - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/LED.c) - [LED - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/LED.py) - [LED - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/LED.sh) ### OLED This example shows how to use the OLED screen located on the front panel of the Tiger computer. - [OLED - C example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/c/OLED.c) - [OLED - Python example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/python/OLED.py) - [OLED - Bash example](https://github.com/Redisage/Tiger-City-IMX-Software-Examples/blob/main/scripts/OLED.sh) # TCXV example web-app ## {{@273#bkmrk-tiger-city-imx-embed}} The device hosts a web application that can be accessed by connecting to it via a local network. Type `node /opt/redisage/example-app/server.js` in the device's terminal to start hosting an example web application. ## Example web application ### Login [![image.png](https://doc.redisage.com/uploads/images/gallery/2025-03/scaled-1680-/00Bimage.png)](https://doc.redisage.com/uploads/images/gallery/2025-03/00Bimage.png) The default code is 0000. After logging in, a user can change it. The code settings are in the upper-right corner of the site, next to the help button. [![image.png](https://doc.redisage.com/uploads/images/gallery/2025-03/scaled-1680-/j3Vimage.png)](https://doc.redisage.com/uploads/images/gallery/2025-03/j3Vimage.png) ### Panels #### Overview The purpose of this panel is only to display data from different interfaces on a common chart. Output pins are to be controlled via individual interfaces pages. All of the below help images are also available on the site by clicking the question mark in the upper-right corner. [![image.png](https://doc.redisage.com/uploads/images/gallery/2025-03/scaled-1680-/Da0image.png)](https://doc.redisage.com/uploads/images/gallery/2025-03/Da0image.png) #### Digital input [![di.png](https://doc.redisage.com/uploads/images/gallery/2025-03/scaled-1680-/di.png)](https://doc.redisage.com/uploads/images/gallery/2025-03/di.png) #### Digital input/output [![dio.png](https://doc.redisage.com/uploads/images/gallery/2025-03/scaled-1680-/dio.png)](https://doc.redisage.com/uploads/images/gallery/2025-03/dio.png) #### Universal input/output [![uio.png](https://doc.redisage.com/uploads/images/gallery/2025-03/scaled-1680-/uio.png)](https://doc.redisage.com/uploads/images/gallery/2025-03/uio.png) #### Serial [![image.png](https://doc.redisage.com/uploads/images/gallery/2025-03/scaled-1680-/jMUimage.png)](https://doc.redisage.com/uploads/images/gallery/2025-03/jMUimage.png) #### 1-Wire [![wire.png](https://doc.redisage.com/uploads/images/gallery/2025-03/scaled-1680-/wire.png)](https://doc.redisage.com/uploads/images/gallery/2025-03/wire.png) #### Terminal This panel serves as a terminal emulator for basic communication with the device. It allows navigating through the directories, looking up logs or connected devices and much more. [![image.png](https://doc.redisage.com/uploads/images/gallery/2025-03/scaled-1680-/AlDimage.png)](https://doc.redisage.com/uploads/images/gallery/2025-03/AlDimage.png) GitHub repository: soon. # Notes [DRAFT] - Add www github reopo - to do - All examples reworked to rev 3, checked and merged. - All examples checked and merged. - Unify the names of the examples (C, Python and Bash examples should have the same name: name.c/.py/.sh). - Rename GitLab repository folder “**src**” to “**c**” and change **CMakeLists.txt** accordingly. - **buzzer.sh example modified to wait 2 seconds and turn itself off.** - **Missing EEPROM\_erase - Bash example - added but needs to be checked.** - **EEPROM\_SN\_Read.py modified** to work in the same way (“/sys/bus/nvmem/devices/2-0052**3**/nvmem”). - **Missing ETHERNET - C example - added but needs to be checked.** - **Missing ETHERNET - Python example - added but needs to be checked.** - **FLASH\_read.c, FLASH\_read.py and FLASH\_read.sh modified** to work in the same way as other scripts (“/dev/**mtdblock0**”). - **Missing FLASH\_erase - Bash example - added but needs to be checked.** - **Missing GSM\_reset - Python example - added but needs to be checked.** - **GSM\_reset examples - untested.** - **LED.sh example modified** to wait **1** second and then turn the LEDs off. - **OLED examples - untested.** - **Missing onewire - Python example - added but needs to be checked.** - **onewire examples - untested.** - **RS232.c example modified - only write to and read from “/dev/ttymxc0”.** - **Missing RS232 - Python example - added but needs to be checked.** - **Missing RS232 - Bash example - added but needs to be checked.** - Original RS485.c - bad device address error (fixed with struct serial\_rs485). - Original RS485.c does not seem to work properly - only writing is available. - **RS485.c modified to work in the same way as RS232.c.** - **Missing RS485 - Python example - added but needs to be checked.** - **Missing RS485 - Bash example - added but needs to be checked.** - **Missing RTC - Python example added but needs to be checked.** - **Missing UIO\_AI\_10V - Python example - added but needs to be checked.** - **Missing UIO\_AI\_10V - Bash example - added but needs to be checked.** - **Missing UIO\_AI\_20mA - Python example - added but needs to be checked.** - **Missing UIO\_AI\_20mA - Bash example - added but needs to be checked.** - **Missing UIO\_AO - Python example - added but needs to be checked.** - **Missing UIO\_AO - Bash example - added but needs to be checked.** - **Missing UIO\_DI - Bash example **- added but needs to be checked.**** - **Missing USB - Python example - added but needs to be checked.** - **USB examples - untested.** - **Missing watchdog - C example - added but needs to be checked.** - **Missing watchdog - Python example - added but needs to be checked.** - **Missing WIFI - C example - added but needs to be checked.** - **Missing WIFI - Python example - added but needs to be checked.** - **WIFI examples should also have the AP mode implemented.** # Contact Us - [Main web page](https://redisage.com/) - [Facebook](https://www.facebook.com/Redisage/) - E-mail: - Phone number: +48 71 70 00 140 - Address: NSG 4L Sp. z o.o. ul. Trzy Lipy 3B 80-172 Gdańsk (POLSKA) - [More information](https://redisage.com/en/contact.html) # Common Resources # Internal Communication Lines The device is equipped with multiple internal communication lines of the following types: - [{{@134#bkmrk-spi}}](https://doc.redisage.com/link/134#bkmrk-spi) - [{{@134#bkmrk-i2c}}](https://doc.redisage.com/link/134#bkmrk-i2c) - [{{@134#bkmrk-uart}}](https://doc.redisage.com/link/134#bkmrk-uart) ### SPI The device is equipped with the following SPI communication lines. #### SPI1
**Signal** **Processor pin** **Default function**
Chip select 0 AD18 SPI1\_CS0
Chip select 1 AG23 SPI1\_CS1
Master in slave out A7 SPI1\_MISO
Clock D6 SPI1\_SCLK
Master out slave in B7 SPI1\_MOSI
#### SPI2
**Signal** **Processor pin** **Default function**
Chip select 0 A6 SPI2\_CS0
Chip select 1 AF12 SPI2\_CS1
Chip select 2 AB19 SPI2\_CS2
Master in slave out A8 SPI2\_MISO
Clock E6 SPI2\_SCLK
Master out slave in B8 SPI2\_MOSI
### I2C The device is equipped with the following I2C communication lines. #### I2C2 Device name: **/dev/i2c-1**
**Signal** **Processor pin** **Default function**
Clock D10 I2C2\_SCL
Data D9 I2C2\_SDA
#### I2C3 Device name: **/dev/i2c-2**
**Signal** **Processor pin** **Default function**
Clock E10 I2C3\_SCL
Data F10 I2C3\_SDA
#### I2C4 Device name: **/dev/i2c-3**
**Signal** **Processor pin** **Default function**
Clock D13 I2C4\_SCL
Data E13 I2C4\_SDA
### UART The device is equipped with the following UART communication lines. #### UART1 Device name: **/dev/ttymxc0**
**Signal** **Processor pin** **Default function**
Receive (UART1 RX) E14 UART1\_RXD
Transmit (UART1 TX) F13 UART1\_TXD
#### UART2 Device name: **/dev/ttymxc1**
**Signal** **Processor pin** **Default function**
Receive (UART2 RX) X UART2\_RXD
Transmit (UART2 TX) X UART2\_TXD
#### UART3 Device name: **/dev/ttymxc2**
**Signal** **Processor pin** **Default function**
Receive (UART3 RX) E18 UART3\_RXD
Transmit (UART3 TX) D18 UART3\_TXD
#### UART4 Device name: **/dev/ttymxc3**
**Signal** **Processor pin** **Default function**
Receive (UART4 RX) F19 UART4\_RXD
Transmit (UART4 TX) F18 UART4\_TXD
# New Page # New Page # New Page # Introduction ## Tiger City IMX Industrial Computer with Linux OS The Tiger City IMX minicomputer uses Linux operating systems and is equipped with several communication interfaces such as: Ethernet, USB 2.0, HDMI, GSM, RS232, RS485, 1-Wire and multiple analog-digital inputs and outputs. It can also be configured to include a Wi-Fi module and encryption modules that increase the security of the device. The casing enables installation on the DIN rail. The front panel has switches, an OLED display and a joystick for manual control of the device operation. # Drawings ### Placement of peripherals
### Power supply
### Detailed connections diagram
### Enclosure [![image.png](https://doc.redisage.com/uploads/images/gallery/2026-01/scaled-1680-/image.png)](https://doc.redisage.com/uploads/images/gallery/2026-01/image.png) # CM Variscite Computation Module ### VAR-SOM-MX8MM Table of connections for VAR-SOM-6UL and VAR-SOM-MX8MM outputs for peripherals on 200-pin SODIMM connector.
**Pin No.****TCX SOM interface****TCX signal** **Pin No.****TCX SOM interface****TCX signal**
1NCX 2GNDGND
3ETH\_TRX0\_PETH\_RX\_P 4NCX
5ETH\_TRX0\_NETH\_RX\_N 6NCX
7GNDGND 8GNDGND
9ETH\_TRX1\_PETH\_TX\_P 10NCX
11ETH\_TRX1\_NETH\_TX\_N 12NCX
13GNDGND 14GNDGND
15LED\_ACTETH\_LED\_YELLOW 16LED\_LINK10\_100\_1000ETH\_LED\_GREEN
17GPIO5\_IO051WIRE\_SLPZ 18GPIO3\_IO24SOM\_DI5
19GNDGND 20GPIO3\_IO25SOM\_DI4
21GPIO4\_IO23TPM\_IRQ 22GPIO4\_IO22SOM\_DI3
23GPIO4\_IO21FREE\_GPIO4\_IO21 24GPIO4\_IO24SOM\_DI2
25GPIO4\_IO25FREE\_GPIO4\_IO25 26GPIO4\_IO26SOM\_DI1
27GNDGND 28GNDGND
29GPIO1\_IO07FREE\_GPIO1\_IO07 30GPIO1\_IO17FREE\_GPIO1\_IO17
31NCX 32VCC\_SOM+3V3\_SOM
33NCX 34VCC\_SOM+3V3\_SOM
35NCX 36VCC\_SOM+3V3\_SOM
37GNDGND 38VDD\_ENET+3V3\_SOM
39GPIO5\_IO09FREE\_GPIO5\_IO09 40USB1\_OTG\_OCUSB1\_OTG\_FAULT
41~ECSPI1\_MISOSPI1\_MISO 42BOOT\_SELBOOT\_SEL\_SOM
43~ECSPI1\_SCLKSPI1\_SCLK 44NCX
45~ECSPI1\_MOSISPI1\_MOSI 46NCX
47GNDGND 48GPIO1\_IO02EEPROM\_#WC\_1
49SOM\_3V3\_PERSOM\_PER 50NCX
51NCX 52NCX
53NCX 54UART1\_RXDSOM\_UART1\_RX
55NCX 56UART1\_TXDSOM\_UART1\_TX
57NCX 58GNDGND
59GNDGND 60SD2\_CLKSD2\_CLK
61SD2\_DATA2SD2\_DATA2 62SD2\_DATA0SD2\_DATA0
63SD2\_DATA1SD2\_DATA1 64SD2\_CMDSD2\_CMD
65SD2\_DATA3SD2\_DATA3 66GNDGND
67GNDGND 68PWM2\_OUTDIO\_PWM2
69PWM3\_OUTDIO\_PWM3 70ECSPI2\_MOSISPI2\_MOSI
71GPIO2\_IO19RS485\_1\_2\_INT 72GPIO1\_IO11HMI\_IRQ
73GPIO4\_IO27HUB\_ENABLE 74GPIO1\_IO16FREE\_GPIO1\_IO16
75ECSPI2\_SCLKSPI2\_SCLK 76GNDGND
77ECSPI2\_MISOSPI2\_MISO 78GNDGND
79ECSPI2\_SS0SPI2\_CS0\_TPM 80USB1\_OTG\_IDUSB1\_OTG\_ID\_SOM
81~GPIO1\_IO00RS485\_INT 82GPIO5\_IO01EXP2\_NRST\_SOM
83UART4\_RXDSOM\_UART4\_RX 84GPIO4\_IO03EXP1\_NRST\_SOM
85UART4\_TXDSOM\_UART4\_TX 86~BOOT\_CFG03BOOT\_GPIO4\_IO05
87I2C2\_SDAI2C2\_SDA 88I2C2\_SCLI2C2\_SCL
89GNDGND 90~I2C3\_SDAI2C3\_SDA
91GPIO1\_IO15HW\_VER 92~I2C3\_SCLI2C3\_SCL
93GPIO4\_IO10SPI2\_CS2\_RS485 94USB1\_IDUSB1\_OTG\_ID\_SOM
95GNDGND 96GPIO1\_IO06UIO\_RST
97GPIO1\_IO23FREE\_GPIO1\_IO23 98PMIC\_PWRON\_BNRST\_SOM
99~GPIO1\_IO14HMI\_DPSW5 100NCX
101GNDGND 102NCX
103VCC\_SOM+3V3\_SOM 104USB2\_VBUS+5V
105VCC\_SOM+3V3\_SOM 106USB1\_VBUS+5V
107VCC\_SOM+3V3\_SOM 108USB2\_D\_NUSB2\_SOM\_N
109VCC\_SOM+3V3\_SOM 110USB2\_D\_PUSB2\_SOM\_P
111VCC\_SOM+3V3\_SOM 112GNDGND
113GPIO4\_IO28HMI\_GPO 114USB1\_D\_NUSB1\_SOM\_N
115GPIO5\_IO24FREE\_GPIO5\_IO24 116USB1\_D\_PUSB1\_SOM\_P
117GPIO1\_IO08GPIO\_EXP\_INT 118GNDGND
119NCX 120GPIO5\_IO02SOM\_GLOB\_NRST
121NCX 122USB1\_OTG\_PWRUSB1\_OTG\_PWRSW\_EN
123NCX 124UART3\_TXDSOM\_UART3\_TX
125NCX 126GNDGND
127NCX 128NCX
129NCX 130NCX
131NCX 132GNDGND
133NCX 134NCX
135NCX 136NCX
137 NCX 138GNDGND
139GNDGND 140NCX
141~BOOT\_CFG10BOOT\_GPIO4\_IO14 142NCX
143NCX 144GNDGND
145GPIO4\_IO7BUZZER 146GPIO4\_IO18SPI1\_CS1\_GPO
147GPIO4\_IO12SOM\_GSM\_NRST 148GPIO4\_IO02UIO\_RST\_EN
149GNDGND 150~GPIO1\_IO03MAIN\_BOARD\_LED
151~BOOT\_CFG04BOOT\_GPIO4\_IO6 152GPIO4\_IO13ESP32\_WDT\_EN
153~GPIO\_IO5SPI2\_CS1\_RS485 154GPIO1\_IO01ESP32\_WDI
155~BOOT\_CFG13BOOT\_GPIO4\_IO17 156GPIO4\_IO19SC\_ENABLE
157~BOOT\_CFG06BOOT\_GPIO4\_IO08 158GNDGND
159GNDGND 160DSI\_TX1\_NDSI\_TX1\_N
161DSI\_TX0\_NDSI\_TX0\_N 162DSI\_TX1\_PDSI\_TX1\_P
163DSI\_TX0\_PDSI\_TX0\_P 164DSI\_TX2\_NDSI\_TX2\_N
165DSI\_TX3\_NDSI\_TX3\_N 166DSI\_TX2\_PDSI\_TX2\_P
167DSI\_TX3\_PDSI\_TX3\_P 168DSI\_CLK\_NDSI\_CLK\_N
169GNDGND 170DSI\_CLK\_PDSI\_CLK\_P
171GPIO5\_IO25FREE\_GPIO5\_IO25 172GNDGND
173~BOOT\_CFG11BOOT\_GPIO4\_IO15 174I2C4\_SCLI2C4\_SCL
175UART3\_RXDSOM\_UART3\_RX 176I2C4\_SDAI2C4\_SDA
177GPIO4\_IO11LT8912B\_INT\_SOM 178GNDGND
179GNDGND 180NCX
181NCX 182NCX
183NCX 184NCX
185GNDGND 186NCX
187GPIO4\_IO04SOM\_GSM\_PWR\_EN 188NCX
189GPIO4\_IO20ESP\_CHIP\_PU\_SOM 190NCX
191GPIO4\_IO00RS485\_NRST\_SOM 192NCX
193GPIO4\_IO01HDMI\_HPD\_SOM 194NCX
195AGNDGND 196GPIO3\_IO19FLASH\_#HOLD
197GPIO3\_IO20ESP\_GPIO2\_SOM 198GPIO3\_IO21SPI1\_CS0\_FLASH
199GPIO3\_IO22ESP\_GPIO0\_SOM 200GPIO3\_IO23FLASH\_#WP
### VAR-SOM-6UL Table of connections for VAR-SOM-6UL outputs for peripherals on 200-pin SODIMM connector.
**Pin No.****TCX SOM interface****TCX signal** **Pin No.****TCX SOM interface****TCX signal**
1 GND GND 2 GND GND
3 ETH\_RXDP ETH\_RXDP 4 NC X
5 ETH\_RXDN ETH\_RXDN 6 NC X
7 GND GND 8 GND GND
9 ETH\_TXDP ETH\_TXDP 10 NC X
11 ETH\_TXDN ETH\_TXDN 12 NC X
13 GND GND 14 GND GND
15 ETH\_LED\_ACT ETH\_LED\_ACT 16 ETH\_LED\_LINK ETH\_LED\_LINK
17 GPIO1\_IO5 WDT WDI 18 GPIO1\_IO15 FLASH\_#WP
19 GND GND 20 GPIO1\_IO11 FLASH\_#HOLD
21 GPIO4\_IO27 SC\_IDLE/BUSY 22 UART5\_CTS\_B UART\_P4\_CTS
23 GPIO4\_IO23 SPI1E\_CS2 24 UART1\_CTS\_B UART\_P4\_CTS
25 GPIO4\_IO26 SPI1E\_CS1 26 GPIO4\_IO28 1WIRE\_SLPZ
27 GND GND 28 GND GND
29 GPIO1\_IO10 SPI2U\_CS1\_GPO 30 UART1\_CTS\_B UART\_P3\_CTS
31 NC X 32 VCC\_SOM VCC\_SOM
33 NC X 34 VCC\_SOM VCC\_SOM
35 NC X 36 VCC\_SOM VCC\_SOM
37 GND GND 38 NC X
39 SPI4\_CS0 SPI2U\_CS0\_FLASH 40 NC X
41 SPI4\_MISO SPI2U\_MISO 42 BOOT\_SEL SOM\_BOOT\_SEL
43 SPI4\_SCLK SPI2U\_SCLK 44 UART3\_CTS\_B UART\_P6\_CTS
45 SPI4\_MOSI SPI2U\_MOSI 46 NC X
47 GND GND 48 UART3\_RX UART\_P6\_RX
49 NC X 50 NC X
51 NC X 52 NC X
53 NC X 54 UART5\_RX UART\_P2/4\_RX
55 GPIO1\_IO9 CHIP\_PU\_PR\_ESP 56 UART5 UART\_P2/4\_TX
57 GPIO1\_IO8 ESP\_GPIO0 58 GND GND
59 GND GND 60 USDHC1\_CLK SD\_CLK
61 USDHC1\_DATA2 SD\_DATA2 62 USDHC1\_DATA0 SD\_DATA0
63 USDHC1\_DATA1 SD\_DATA1 64 USDHC1\_CMD SD\_CMD
65 USDHC1\_DATA3 SD\_DATA3 66 NC X
67 GND GND 68 PWM2\_OUT DIO\_PWM1
69 DIO\_PWM2 DIO\_PWM2 70 SPI2\_MOSI SPI1E\_MOSI
71 GPIO4\_IO14 !GPIO\_EXP\_INT 72 GPIO5\_IO3 HMI\_IRQ
73 GPIO5\_IO1 HUB\_ENABLE 74 NC X
75 SPI2\_SCLK SPI1E\_SCLK 76 GND GND
77 SPI2\_MISO SPI1E\_MISO 78 GND GND
79 SPI2\_CS0 SPI1E\_CS0\_TPM 80 NC X
81 UART4\_CTS UART\_P3\_CTS 82 NC X
83 UART1\_RX UART\_P1/3\_RX 84 GPIO1\_IO19 EXT\_GPIO1
85 UART1\_TX UART\_P1/3\_TX 86 GPIO1\_IO18 EXT\_GPIO2
87 I2C1\_SDA I2C\_SC\_SDA\_SOM 88 I2C1\_SCL I2C\_SC\_SCL\_SOM
89 GND GND 90 I2C3\_SDA I2CS\_SDA
91 BOOT6\_MODE1 92 I2C3\_SCL I2CS\_SCL
93 BOOT6\_MODE0 94 USB1\_OTG\_ID USB1\_OTG\_ID
95 GND GND 96 GPIO3\_IO11 PROG\_EN\_ESP
97 NC X 98 NC X
99 NC X 100 NC X
101 GND GND 102 NC X
103 VCC\_SOM +3V3\_SOM 104 USB2\_VBUS USB2\_VBUS
105 VCC\_SOM +3V3\_SOM 106 USB1\_VBUS USB1\_VBUS
107 VCC\_SOM +3V3\_SOM 108 USB2\_D\_N USB2\_D\_N
109 VCC\_SOM +3V3\_SOM 110 USB2\_D\_P USB2\_D\_P
111 VCC\_SOM +3V3\_SOM 112 GND GND
113 GPIO4\_IO28 WTD\_REFRESH\_ESP 114 USB1\_D\_N USB1\_D\_N
115 NC X 116 USB1\_D\_P USB1\_D\_P
117 UART8\_CTS\_B UART\_P5\_CTS 118 GND GND
119 NC X 120 GPIO5\_IO5 TPM\_IRQ
121 NC X 122 USB1\_OTG\_PWR USB1\_OTG\_PWRCTRL
123 NC X 124 UART8 UART\_P5\_TX
125 NC X 126 GND GND
127 NC X 128 UART3\_TX UART\_P6\_TX
129 NC X 130 NC X
131 NC X 132 GND GND
133 NC X 134 NC X
135 NC X 136 NC X
137 NC X 138 GND GND
139 GND GND 140 NC X
141 NC X 142 NC X
143 NC X 144 GND GND
145 GPIO3\_IO4 EXT\_GPIO3 146 NC X
147 NC X 148 NC X
149 GND GND 150 NC X
151 NC X 152 NC X
153 NC X 154 NC X
155 NC X 156 NC X
157 NC X 158 GND GND
159 GND GND 160 DSI\_TX1\_N DSI\_TX1\_N
161 DSI\_TX0\_N DSI\_TX0\_N 162 DSI\_TX1\_P DSI\_TX1\_P
163 DSI\_TX0\_P DSI\_TX0\_P 164 DSI\_TX2\_N DSI\_TX2\_N
165 DSI\_TX3\_N DSI\_TX3\_N 166 DSI\_TX2\_P DSI\_TX2\_P
167 DSI\_TX3\_P DSI\_TX3\_P 168 DSI\_CLK\_N DSI\_CLK\_N
169 GND GND 170 DSI\_CLK\_P DSI\_CLK\_P
171 NC X 172 GND GND
173 NC X 174 I2C4\_SCL I2CE\_SCL
175 UART8\_RX UART\_P5\_RX 176 I2C4\_SDA I2CE\_SDA
177 NC X 178 GND GND
179 GND GND 180 NC X
181 NC X 182 NC X
183 NC X 184 NC X
185 GND GND 186 NC X
187 GPIO1\_IO3 EXT\_GPIO4 188 NC X
189 USB1\_OTG\_PWR USB1\_OTG\_PWRCTRL 190 NC X
191 GPIO1\_IO2 SOM\_GLOBAL\_NRST 192 NC X
193 GPIO1\_IO1 LT8912B\_INT\_SOM 194 NC X
195 AGND AGND 196 GPIO1\_IO12 SOM\_DI1
197 GPIO1\_IO13 SOM\_DI5 198 GPIO1\_IO14 SOM\_DI2
199 GPIO1\_IO12 SOM\_DI4 200 GPIO1\_IO13 SOM\_DI3
# HMI Connectors Signals for the front panel with 1.27 mm connectors raster.
**HMI 1 2x9 THT**
**Pin No.** **Signal** **Pin No.** **Signal**
1 ETH\_LED\_YELLOW 10 +5V
2 BOOT\_SEL 11 +3V3
3 GND 12 GND
4 GND 13 HMI\_GPO
5 GND 14 HMI\_DPSW5
6 SIM\_LED\_#WWAN 15 UART\_MUX2\_SEL0
7 GND 16 UART\_MUX1\_SEL0
8 +3V3 17 USB1\_MUX\_SEL0
9 +5V 18 ETH\_LED\_GREEN
**HMI 2 2x6 SMD**
**Pin No.** **Signal** **Pin No.** **Signal**
1 I2C3\_SDA 7 GND
2 GND 8 GND
3 +20V 9 HMI\_IRQ
4 NRST\_GLOBAL 10 +20V
5 RESET\_SWITCH 11 GND
6 GND 12 I2C3\_SCL
# Expander Connectors ### EXT Connector SPI, SDIO, USB, I2C, GPIO, reset signal and supply voltages: 1.8 V, 3.3 V, 5 V and 20 V are put out on EXT expander connector.
**EXT 2x22 SMD**
**Pin No.****Signal** **Pin No.** **Signal**
1 GND 23 GND
2 VIN 24 I2C3 SDA
3 GND 25 I2C3 SCL
4 SPI1 MOSI 26 GND
5 GND 27 +3V3
6 SPI1 SCLK 28 GND
7 GND 29 USB3 positive pole
8 SPI1 MISO 30 USB3 negative pole
9 GND 31 GND
10 RTC battery power supply 32 +20V
11 External watchdog reset 33 UIO reset
12 NC 34 NC
13 GND 35 NC
14 NC 36 +1V8
15 NC 37 +1V8
16 NC 38 GND
17 GPIO4 IO25 39 +5V
18 GND 40 +5V
19 GPIO1 IO07 41 GND
20 GPIO4 IO21 42 GND
21 GPIO5 IO09 43 VIN
22 Global reset 44 GND
### Expander E (GPIO, RS485 termination and DIO)
**MCP23017-E/ML**
**Pin No.****Signal** **Pin No.** **Signal**
1DIO\_DI415GPIO\_EXP\_INT
2DIO\_DI516GPIO\_EXP\_INT
3DIO\_DI617TERM\_RS485\_4
4DIO\_DI718TERM\_RS485\_3
5+3V319TERM\_RS485\_2
6GND20TERM\_RS485\_1
7X21X
8I2C3\_SCL22X
9I2C3\_SDA23SC\_IDLE/BUSY
10X24DIO\_DI1
11+3V325DIO\_DI2
12+3V326SD\_DETECT
13GND27VIN\_LEVEL\_ERR
14EXP1\_NRST28DIO\_DI2
# I2C Devices Addresses
**Addresses IMX8**
**Circuit** **PN** **Address** **Extra**
**Addresses I2C4**
Secure chip TO136 1010000 (0x50)
ESP32 ESP32-D0WD XXXXXXX defined in microcontroller
GSM SIM7600I2C through NC resistor
DSI - HDMI bridge LT8912B 1001000 (0x48, 0x49, 0x4a, 0x4b)
**Addresses I2C3**
RTC DS1338 1101000 (0x68)
ADC 1 NAU7802SGI 0101010 (0x2A)
HMI PANEL display SCE087002-V01 0111100 (0x3C)
HMI PANEL expander MCP23017 0100001 (0x21)
GPIO expander MCP23017-E/ML 0100011 (0x23)
**Addresses I2C2**
EEPROM M24C02-RMC6 1010110 (0x56)
EEPROM SN M24C02-RMC6 1010010 (0x52)
Expander C MCP23017-E/ML 0100000 (0x20)
ADC 2 NAU7802SGI 0101010 (0x2A)
DAC DAC7574IDGSR 1001100 (0x4C)
1-Wire bridge DS2484 0011000 (0x18)
**Addresses Virtual I2C**
HDMI Connector I2C 206H-SDAN-R01 1010000, 0110111 (0x50, 0x37)