Expanders
Expander A
Part number: 74HC595BQ
Expander A diagram
Expander A pins description
|
Pin |
Type |
Usage |
User space name |
Description |
|---|---|---|---|---|
|
15 |
Q0 |
MUX_DIO_SEL |
gpiochip8 0 |
MUX_PWM selection signal |
|
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 |
Q7S_DATA |
X |
First shift register signal |
|
11 |
SHCP |
SPI1_SCLK |
X |
SPI clock |
|
12 |
STCP |
SPI1_CS0 |
X |
SPI chip select |
|
14 |
DS |
SPI1_MOSI |
X |
SPI master out slave in |
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 |