MXP Pmod Adapter for NI myRIO/roboRIO

Overview

With the Pmod Adapter for myRIO, you can now connect your myRIO to the expansive selection of peripheral modules offered by Digilent.

Features include:

Uses the myRIO Expansion Port (MXP) connector
Standard 34-pin female breakout
Two Pmod connectors designed for use with UART and SPI communication protocols
A standard 8-pin male I2C connector
Optional external power supply input (supports 4.5V-20V)

Powering the Adapter

The Pmod connectors on the Pmod Adapter for NI myRIO can be powered by either the myRIO or by an external power source installed in J3. You can choose which power source to use with the jumper JP1. Selecting +3V3 will power the Pmod connectors with the 3.3V source supplied by the myRIO. Selecting REG will power the connectors using the external power source regulated to 3.3V.

Pin Connections

Pmod A (JA) : Pmod Connector A (SPI)

Pin#	myRIO Pin Name	Function
1	DIO13	IO
2	DIO7	IO/SPI-MOSI
3	DIO6	IO/SPI-MISO
4	DIO5	IO/SPI-CLK
5/11	GND	GND
6/12	3V3	3V3
7	DIO0	IO
8	DIO1	IO
9	DIO2	IO
10	DIO3	IO

Pmod B (JB) : Pmod Connector B (UART)

Pin#	myRIO Pin Name	Function
1	DIO8	IO/PWM0
2	UART-TX	UART-TX
3	UART-RX	UART-RX
4	DIO9	IO/PWM1
5/11	GND	GND
6/12	3V3	3V3
7	DIO10	IO/PWM2
8	DIO4	IO
9	DIO11	IO/ENC-A
10	DIO12	IO/ENC-B

I2C (J4) : I2C Connector (I2C)

Pin#	myRIO Pin Name	Function
1	DIO14/SCL	IO/I2C-SCL
2	DIO15/SDA	IO/I2C-SDA
3/7	GND	GND
4/8	3V3	3V3
5	DIO14/SCL	IO/I2C-SCL
6	DIO15/SDA	IO/I2C-SDA

AO0 (J5) : AO0 Connector

Pin#	myRIO Pin Name	Function
1	AO0	Analog Output 0
2	GND	GND

AO1 (J6) : AO1 Connector

Pin#	myRIO Pin Name	Function
1	AO1	Analog Output 1
2	GND	GND

Using the Adapter with myRIO

Please visit the myRIO Community Website for example code and project ideas.