Datasheet

1300 Henley Court

Pullman, WA 99163

509.334.6306

www.digilentinc.com

PmodRF2™ Reference Manual

Revised May 9, 2011

This manual applies to the PmodRF2 rev. A

DOC#: 502-201

Other product and company names mentioned may be trademarks of their respective owners.

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Overview

The PmodRF2 is an interface board for the Microchip® MRF24J40 IEEE 802.15.4™ 2.4GHz RF transceiver module.

The PmodRF2 can add RF communication to any Digilent system board.

1 Functional Description

The PmodRF2 provides RF support for applications at data rates of 250kbps (IEEE 802.15) or 625kbps (Turbo

mode). It is designed for use with the Microchip microcontroller families (PIC18, PIC24, dsPIC33, and PIC32) and

the ZigBee®, MiWi™, and MiWi P2P software stacks all available for download at the Microchip website:

www.microchip.com/wireless.

2 Interfacing with the Pmod

The primary communications interface with the PmodRF2 is an SPI bus on J1. The PmodRF2 is implemented as a

slave device in SPI mode (0, 0), which requires SCK to idle in a low state and the ~CS pin to be held low during

communication. An RST pin provides the host with an active low, asynchronous hardware reset for the PmodRF2.

The PmodRF2 also provides a configurable polarity interrupt (default active low) indicator pin (INT), which is

asserted by the PmodRF2 when data is available for the host device. The INT line is de-asserted after the INTSTAT

The PmodRF2.

 IEEE 802.15-compliant RF transceiver

 Supports ZigBee ®, MiWi™, MiWi P2P and proprietary

wireless networking protocols

 ISM band 2.405-2.48GHz operation

 Simple SPI communication interface

 Integrated 20MHz and 32.768 oscillator circuitry

Features include:

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300 Henley Court Pullman, WA 99163 509.334.6306 www.digilentinc.com PmodRF2™ Reference Manual Revised May 9, 2011 This manual applies to the PmodRF2 rev. A Overview The PmodRF2 is an interface board for the Microchip® MRF24J40 IEEE 802.15.4™ 2.4GHz RF transceiver module. The PmodRF2 can add RF communication to any Digilent system board. Features include:      IEEE 802.15-compliant RF transceiver Supports ZigBee ®, MiWi™, MiWi P2P and proprietary wireless networking protocols ISM band 2.405-2.
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PmodRF2™ Reference Manual Connector J1 – SPI Communications Pin Signal Description 1 2 3 ~CS SDI SDO Chip Select Serial Data In Serial Data Out 4 SCK Serial Clock 5 6 7 GND VCC INT Power Supply Ground Power Supply (3.3V) Interrupt Output 8 9 10 ~RST WAKE NC Hardware Reset Hardware Wake Not Connected 11 12 GND VCC Power Supply Ground Power Supply (3.3V) Table 1. Interface connector signal description. The SPI interface standard uses four signal lines.