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Micrel, Inc.  

  2180 Fortune Drive  

  San Jose, CA 95131  

  U.S.A.   

408-944-0800  (voice)  

  408-474-1000  (fax) 

http://www.Micrel.com

 

 

 
 
KSZ8851SNL 

32-pin Single-Port Ethernet Controller 

With Serial Peripheral Interface (SPI) 

 
Evaluation Board User’s Guide

 

 

 
Revision 1.1 
April 2010 

 
 
 
 
 
 
 

 
 
 
 
 
 
 
 

 

© Micrel, Inc. 2007 

All rights reserved 

 

Micrel is a registered trademark of Micrel and its subsidiaries in the  

United States and certain other countries.  All other trademarks are the 

property of their respective owners. 

 
 

The information furnished by Micrel in this datasheet is believed to be accurate and reliable. However, no responsibility is 
assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without 
notification to the customer. Micrel Products are not designed or authorized for use as components in life support 
appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. 
Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) 
support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user.  

Summary of Contents for KSZ8851SNL-Eval

Page 1: ...hed by Micrel in this datasheet is believed to be accurate and reliable However no responsibility is assumed by Micrel for its use Micrel reserves the right to change circuitry and specifications at a...

Page 2: ...ms is at Purchaser s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale Revision History Revision Date Summary of Changes 1 0 3 03 2008 Initial Rel...

Page 3: ...ntroduction 5 2 0 Board Features 5 3 0 Evaluation Kit Contents 5 4 0 Hardware Description 6 4 1 Host SPI Interface 7 4 2 Jumper Setting Definition 8 4 3 Power Supply and Test Point Definition 9 4 4 RJ...

Page 4: ...st SPI Interface Connection with Spirent SmartBits 7 List of Tables Table 1 Header JP1 Host Connection for SPI Interface 8 Table 2 Header JP1 Host Connection for Control and Power 8 Table 3 KSZ8851SNL...

Page 5: ...vice setup initialization and transmit receive packet All KSZ8851SNL configuration pins control signals and SPI interface are accessible either by jumpers test points or headers 2 0 Board Features One...

Page 6: ...n 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 P...

Page 7: ...en SPI operation is idle Figure 6 shows the SPI interface connection for KSZ8851SNL Figure 2 SPI Interface to KSZ8851SNL The KSZ8851SNL Eval board receives 5V power from the header JP1 pin 1 Figure 3...

Page 8: ...ion except the VDD_IO option During power up the KSZ8851SNL is configured using the chip s internal pull up and pull down resistors with its default strapping pin value which will set this device in o...

Page 9: ...45 Jack J1 connects to standard CAT 5 Ethernet cable to interface with 10Base T 100Base TX Ethernet devices The LAN interface on the KSZ8851SNL is connected to a transformer T1 with 50 ohm terminatio...

Page 10: ...ult 1 LED1 Top 100BT ACT LED1 Bottom LINK ACT LINK Table 6 KSZ8851SNL Eval Port Status LED Definition Table 7 shows the rest of LEDs definition LED Color Description LED2 Green Power Management Event...

Page 11: ...KSZ8851SNL Eval Evaluation Board User s Guide Rev 1 1 Micrel Inc April 21 2010 11 11 5 0 Bill of Materials KSZ8851SNL Eval Board Revision 1 1...

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