| **LED**
|
| Power LED7 (blue) | +3V3 |
| ETHERNET LED1 (green) | ETH\_LED3/PHY\_AD3 |
| RGB programmable LED5 (red) | Q6 |
| RGB programmable LED5 (blue) | Q5 |
| RGB programmable LED5 (green) | Q4 |
| **74HC595BQ shift register** |
| VCC | +3V3 |
| Q7S | Q7S |
| Q0 | Q0 |
| Q1 | Q1 |
| Q2 | Q2 |
| Q3 | RS485\_TER\_EN2 |
| Q4 | Q4 |
| Q5 | Q5 |
| Q6 | Q6 |
| Q7 | RS485\_TER\_EN1 |
| MR/ | CHIP\_PU (pull up) |
| OE/ | GND |
| DS | SERIAL\_REG\_DATA |
| SHCP | SHCP |
| STCP | STCP (pull down) |
| GND | GND |
| TPAD | GND |
| **MAX481CSA\_1 UART RS485 transceiver** |
| DI | UART1\_TX |
| DE | UART1\_DIR |
| RE/ | UART1\_DIR |
| RO | UART1\_RX |
| A | A\_1 |
| B | B\_1 |
| **MAX481CSA\_2 UART RS485 transceivers** |
| DI | UART2\_TX |
| DE | UART2\_DIR |
| RE/ | UART2\_DIR |
| RO | UART2\_RX |
| A | A\_2 |
| B | B\_2 |
| **ST3232BTR RS232 driver and receiver** |
| C1+ | C1 (100 nF) |
| C1- | C1 (100 nF) |
| C2+ | C2 (100 nF) |
| C2- | C2 (100 nF) |
| T1IN | UART1\_TX
|
| T2IN | UART2\_TX
|
| R1OUT | UART1\_RX
|
| R2OUT | UART2\_RX
|
| V+ | C3 (100 nF)
|
| V- | C4 (100 nF)
|
| T1OUT | TXD1
|
| T2OUT | TXD2
|
| R1IN | RXD1
|
| R2IN | RXD2
|
| **USBLC6-2SC6 ESD protection**
|
| VCC | USB\_V
|
| GND | GND
|
| IO1\_A | DATA-
|
| IO1\_B | CONSOLE\_RX
|
| IO2\_A | DATA+
|
| IO2\_B | CONSOLE\_TX
|
| **MicroUSB type B**
|
| V\_BUS | USB\_V
|
| D- | DATA-
|
| D+ | DATA+
|
| ID | GND
|
| GND | GND
|
| **M24C02-RMC6TG\_1 I2C EEPROM**
|
| E0 | GND
|
| E1 | GND
|
| E2 | +3V3
|
| VSS | GND
|
| VCC | +3V3
|
| WC/ | GND
|
| SCL | I2C\_SCL
|
| SDA | I2C\_SDA
|
| **M24C02-RMC6TG\_2 I2C EEPROM**
|
| E0 | +3V3
|
| E1 | +3V3
|
| E2 | GND
|
| VSS | GND
|
| VCC | +3V3
|
| WC/ | GND
|
| SCL | I2C\_SCL (pull up)
|
| SDA | I2C\_SDA (pull up)
|
| **GD25Q64CSIGTR QSPI FLASH**
|
| CS# | SPICS0
|
| SO | SPIQ
|
| WP# | SPIWP
|
| VSS | GND
|
| VCC | VDD\_SDIO
|
| HOLD# | SPIHD
|
| SCLK | SPICLK
|
| SI | SPID
|
| **IP101GRI ETHERNET transceivers**
|
| MDC | ETH\_MDC
|
| MDIO | ETH\_MDIO
|
| MDI\_TP | TXD+
|
| MDI\_TN | TXD-
|
| MDI\_RP | RXD+
|
| MDI\_RN | RXD-
|
| X2 | - |
| X1 | GND |
| RESET\_N | ETH\_RESET\_N (pull up) |
| ISET | ETH\_ISET (pull down) |
| LED0/PHY\_AD0 | ETH\_LED0/PHY\_AD0 (pull up) |
| LED3/PHY\_AD3 | ETH\_LED3/PHY\_AD3 (pull down) |
| TEST\_ON | - |
| REGOUT | C21 (100 nF), C35 (10 uF) |
| VDDIO | +3V3 |
| AVDD33 | +3V3 |
| GND | GND |
| TXEN | ETH\_TX\_EN |
| TXER/FXSD | - |
| TXCLK/50M\_CLKI | ETH\_CLK\_IN |
| TXD0 | ETH\_TXD0 |
| TXD1 | ETH\_TXD1 |
| TXD2 | - |
| TXD3 | - |
| RXDV/CRS\_DV/FX\_HEN | ETH\_RX\_CRS\_DV |
| RXCLK/50M\_CLKO | - |
| RXD0 | ETH\_RXD0 |
| RXD1 | ETH\_RXD1 |
| RXD2 | - |
| RXD3 | - |
| RXER/INTR\_32 | - |
| COL/RMII | ETH\_COL/RMII (pull up) |
| CRS/LEDMOD | - |
| **ESP32-DOWD** |
| VDDA\_1 | +3V3 |
| LNA\_IN | ANT |
| VDD3P3\_1 | VDD3P3 (+3V3) |
| VDD3P3\_2 | VDD3P3 (+3V3) |
| SENSOR\_VP (GPI36) | USB\_DETECT (pull down) |
| SENSOR\_CAPP (GPI37) | UART2\_RX |
| SENSOR\_CAPN (GPI38) | GPI\_38 |
| SENSOR\_VN (GPI39) | P\_DETECT (pull up) |
| CHIP\_PU | CHIP\_PU (pull up) |
| VDET\_1 (GPI34) | BUTTON\_IN (pull up) |
| VDET\_2 (GPI35) | UART1\_RX |
| 32K\_XP (GPIO32) | UART1\_TX |
| 32K\_XN (GPIO33) | SHCP |
| GPIO25 | ETH\_RXD0 |
| GPIO26 | ETH\_RXD1 |
| GPIO27 | ETH\_RX\_CRS\_DV |
| MTMS (GPIO14) | UART1\_DIR |
| MTDI (GPIO12) | UART2\_DIR |
| VDD3P3\_RTC | +3V3 |
| MTCK (GPIO13) | I2C\_SDA (pull up) |
| MTDO (GPIO15) | STCP (pull down)
|
| GPIO2 | I2C\_SCL (pull up) |
| GPIO0 | ETH\_CLK\_IN, SPICS1 |
| GPIO4 | SERIAL\_REG\_DATA |
| GPIO16 | ETH\_CLK |
| VDD\_SDIO | VDD\_SDIO |
| GPIO17 | SPICS1 |
| SD\_DATA\_2 (GPIO9) | SPIHD |
| SD\_DATA\_3 (GPIO10) | SPIWP |
| SD\_CMD (GPIO11) | SPICS0 |
| SD\_CLK (GPIO6) | SPICLK |
| SD\_DATA\_0 (GPIO7) | SPIQ |
| SD\_DATA\_1 (GPIO8) | SPID |
| GPIO5 | UART2\_TX |
| GPIO18 | ETH\_MDIO |
| GPIO23 | ETH\_MDC
|
| VDD3P3\_CPU | +3V3 |
| GPIO19 | ETH\_TXD0 |
| GPIO22 | ETH\_TXD1 |
| U0RXD (GPIO3) | CONSOLE\_RX |
| U0TXD (GPIO1) | CONSOLE\_TX |
| GPIO21 | ETH\_TX\_EN |
| VDDA\_2 | +3V3 |
| XTAL\_N | XTAL\_N |
| XTAL\_P | XTAL\_P |
| VDDA\_3 | +3V3 |
| CAP2 | CAP2 |
| CAP1 | CAP1 |
| GND | GND |