Datasheet

1300 Henley Court

Pullman, WA 99163

509.334.6306

www.digilentinc.com

PmodNIC100™ Reference Manual

Revised May 13, 2015

This manual applies to the PmodNIC100 rev. B

DOC#: 502-208

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

Page 1 of 2

Overview

The Digilent PmodNIC100 is a standalone Ethernet Controller to provide Ethernet functionality to any system

board.

1 Functional Description

The PmodNIC100 utilizes Microchip's ENC424J600 Stand-Alone 10/100 Ethernet Controller. By providing both MAC

and PHY support, Ethernet functionality at data rates up to 10 Mbit/s is achievable for any system board.

2 Interfacing with the Pmod

The PmodNIC100 communicates with the host board via the SPI protocol. By leaving the Interrupt/SPI Select

(INT/SPISEL) pin floating or at a logic level high voltage within the first 1 to 10 μS, the SPI mode is enabled. Users

may then bring the Chip Select (CS) line to a logic low voltage state to initiate communication with the Ethernet

Controller.

Note that this Pmod only provides the hardware at the physical layer (PHY) and the media access control (MAC) for

a network interface. Users must provide their own protocol stack software (such as TCP/IP). Digilent provides a set

of libraries providing Ethernet support that is available for download on the PmodNIC100 product page.

The PmodNIC100.

 Communicates via the SPI protocol

 10/100 Mb/s data rates

 IEEE 802.3 compatible Ethernet controller

 MAC and PHY support

 10BASE-T support

 100Base-TX support

Features include:

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300 Henley Court Pullman, WA 99163 509.334.6306 www.digilentinc.com PmodNIC100™ Reference Manual Revised May 13, 2015 This manual applies to the PmodNIC100 rev. B Overview The Digilent PmodNIC100 is a standalone Ethernet Controller to provide Ethernet functionality to any system board. Features include:       Communicates via the SPI protocol 10/100 Mb/s data rates IEEE 802.3 compatible Ethernet controller MAC and PHY support 10BASE-T support 100Base-TX support The PmodNIC100.
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PmodNIC100™ Reference Manual 2.1 Pinout Description Table Pin 1 2 3 4 5 6 1 2 3 4 5 6 Signal CS MOSI MISO SCLK GND VCC ~INT/SPISEL NC NC NC GND VCC Description Chip Select Master-Out-Slave-In Master-In-Slave-Out Serial Clock Power Supply Ground Power Supply (3.3V) Interrupt Signal/SPI Enable Not Connected Not Connected Not Connected Power Supply Ground Power Supply (3.3V) Table 1. Header J1 pinouts on the PmodNIC100. Any external power applied to the PmodNIC100 must be within 3V and 3.