Ext3, Appio Module 3 Connector - Spectrum Digital AppBox C21 User Manual

3.1.4.3 EXT3, AppIO Module Connector
The following table shows the signals present on the EXT3 connector.
Pin # Signal Name
1 Pin 2, JP3, VDD_5V if shorted
2 DGND
3 PB07_ADC(P)
4 PB06_ADC(N)
5 PB04_GPIO
6 PB05_GPIO
7 PA14_PWM(P)
8 PA15_PWM(N)
9 PA28_IRQ/GPIO
10 PA27_SPI_SS_B/GPIO
11 PA12_TWI_SDA
12 PA13_TWI_SCL
13 PA23_UART_RX
14 PA22_UART_TX
15 PA02_SPI_SS_A
16 PB00_SPI_MOSI
17 PB02_SPI_MISO
18 PB01_SPI_SCK
19 DGND
20 VDD_3V3
EXT3, AppIO Module Connector
Function
+5 volts to AppIO Module if
shorted
Ground
A/D converter, alternatively
positive part of differential ADC
A/D converter, alternatively
negative part of differential ADC
General purpose I/O
General purpose I/O
PWM, alternatively positive part
of differential PWM
PWM, alternatively negative part
of differential PWM
Interrupt request line and/or
GPIO
Slave select for SPI and/or GPIO
2
Data line for I C interface, always
implemented, bus type
Clock line for I
always implemented, bus type
Receiver line of target device
UART
Transmitter line of target device
UART
Slave select for SPI
Master out slave out line of serial
peripheral interface, always
implemented, bus type
Master in slave out line of serial
peripheral interface, always
implemented, bus type
Clock for serial peripheral
interface, always implemented,
bus type
Ground
Power for the AppIO Module
AppBox C21 System User's Guide
Shared Functionality
VDD_5V
Ground
16 Mhz. crystal, Y2
Green LED, 16 Mhz.
crystal, Y2
Pin 11 on EXT1, EXT2,
Pin 5, U2
2
C interface, Pin 12 on EXT1, EXT2,
Pin 6, U2
Pin 13 on EXT1, EXT2
Pin 14 on EXT1, EXT2
Ground
Power for the AppIO
Module
SW1
18
AppBox