KSZ8851SNL-Eval Evaluation Board User’s Guide
Rev. 1.1
Micrel, Inc.
April 21, 2010
6/11
4.0 Hardware
Description
The KSZ8851SNL-Eval (shown in Figure 1) comes in a compact form factor and plugs directly
into industry standard test equipment such as Spirent SmartBits, the other side of board is wired
to external host SPI interface through headers. Configuration of the KSZ8851SNL is
accomplished through on-board jumper selections and/or by register access via the host SPI
Interface.
Figure 1. KSZ8851SNL Evaluation Board
Other features include a RJ-45 Jack for Fast Ethernet cable connection, transformer (Pulse
H1102) to block DC level and provide a true AC coupling, EEPROM (Atmel AT93C46) to load
MAC address when it is enabled, jumper to select LDO output for VDD_IO voltage,
programmable LED indicators for reporting port link status and activity, and a manual reset button
for quick reboot after re-configuration of strapping pins.
The KSZ8851SNL-Eval re5V DC input power supply from its Headers JP1.
