Micrel KSZ8851SNL User Manual
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Micrel KSZ8851SNL User Manual

32-pin single-port ethernet controller with serial peripheral interface (spi)
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KSZ8851SNL
32-pin Single-Port Ethernet Controller
With Serial Peripheral Interface (SPI)
Evaluation Board User's Guide
Revision 1.0
March 2008
© 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.
Micrel, Inc. ♦ 2180 Fortune Drive ♦ San Jose, CA 95131 ♦ U.S.A.
408-944-0800 (voice) ♦ 408-474-1000 (fax)
http://www.Micrel.com

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Summary of Contents for Micrel KSZ8851SNL

  • Page 1 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.
  • Page 2 KSZ8851SNL-Eval Evaluation Board User’s Guide A Purchaser's use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser's own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale.

  • Page 3: Table Of Contents

    Rev. 1.0 KSZ8851SNL-Eval Evaluation Board User’s Guide Table of Contents Introduction ................5 Board Features............... 5 Evaluation Kit Contents............5 Hardware Description ............6 Host SPI Interface ....................7 Jumper Setting & Definition .................. 8 Power Supply and Test Point Definition .............. 8 RJ-45 Connector and Transformer ...............
  • Page 4 KSZ8851SNL-Eval Evaluation Board User’s Guide List of Figures Figure 1. KSZ8851SNL Evaluation Board ..................6 Figure 2. KSZ8851SNL-Eval Host SPI Interface Connection with Spirent SmartBits....7 List of Tables Table 1. Header JP1 – Host Connection for SPI Interface.............. 7 Table 2.

  • Page 5: Introduction

    Single-Port Ethernet Controller KSZ8851SNL device from Micrel. The KSZ8851SNL comes with a 32-pin, lead-free QFN (5mm x 5mm) package and provides an ideal solution for applications requiring Serial Peripheral Interface (SPI) between single-port Ethernet Controller and Host microcontroller.

  • Page 6: Hardware Description

    KSZ8851SNL-Eval Evaluation Board User’s Guide 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.

  • Page 7: Host Spi Interface

    KSZ8851SNL-Eval Evaluation Board User’s Guide 4.1 Host SPI Interface The KSZ8851SNL-Eval board receives +5V power from the header JP1 (pin 1). Figure 2 shows the Host SPI interface connection with Spirent SmartBits for system set-up and performance test. Any Microcontroller...

  • Page 8: Jumper Setting & Definition

    The KSZ8851SNL-Eval is supplied from external +5.0V DC power through a Header (pin 1 at JP1), this +5.0V DC input is converted to both +3.3V with a Micrel LDO voltage regulator (U3, MIC5209BM) for 3.3VA analog power and VDD (option for 3.3V, 2.5V or 1.8V) with a Micrel LDO voltage regulator (U4, MIC5209BM) for VDD_IO digital power.

  • Page 9: Eeprom And Led Indicators

    KSZ8851SNL-Eval Evaluation Board User’s Guide 4.5 EEPROM and LED Indicators It is optional in the KSZ8851SNL to use an external EEPROM. The EED_IO (JP2) must be pulled high (Jumper: ON) to use external EEPROM. An external serial EEPROM with a standard microwire bus interface is used for non-volatile storage of information such as the host MAC address.

  • Page 10: Bill Of Materials

    Rev. 1.0 KSZ8851SNL-Eval Evaluation Board User’s Guide Bill of Materials KSZ8851SNL Eval Board (Revision 1.0) Micrel, Inc. March 03, 2008 10/10...

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