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10/100 ethernet physical layer interface, Chapter 14 – Digilent 410-087P-KIT User Manual

Page 109

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Spartan-3E Starter Kit Board User Guide

www.xilinx.com

109

UG230 (v1.0) March 9, 2006

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Chapter 14

10/100 Ethernet Physical Layer Interface

The Spartan-3E Starter Kit board includes a Standard Microsystems LAN83C185 10/100
Ethernet physical layer (PHY) interface and an RJ-45 connector, as shown in

Figure 14-1

.

With an Ethernet Media Access Controller (MAC) implemented in the FPGA, the board
can optionally connect to a standard Ethernet network. All timing is controlled from an
on-board 25 MHz crystal oscillator.

Figure 14-1:

10/100 Ethernet PHY with RJ-45 Connector

RJ-45 Ethernet Connector (J19)

SMSC LAN83C185 10/100 Ethernet PHY

25 MHz Crystal

UG230_c14_01_022706