Micrel KSZ8873MML User Manual
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Micrel KSZ8873MML User Manual

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KSZ8873MML
Evaluation Board User's Guide
KSZ8873MML Integrated 3-Port 10/100 Managed Switch with PHYs
Revision 1.1 January 2011
© Micrel, Inc. 2011
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.
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.
Micrel, Inc. ♦ ♦ ♦ ♦ 1849 Fortune Drive ♦ ♦ ♦ ♦ San Jose, CA 95131 ♦ ♦ ♦ ♦ U.S.A.
408-955-0800 (voice) ♦ ♦ ♦ ♦ 408-955-1577 (fax)
http://www.Micrel.com

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Summary of Contents for Micrel KSZ8873MML

  • Page 1 Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. Micrel, Inc. ♦ ♦ ♦ ♦ 1849 Fortune Drive ♦ ♦ ♦ ♦ San Jose, CA 95131 ♦ ♦ ♦ ♦ U.S.A. 408-955-0800 (voice) ♦ ♦ ♦ ♦ 408-955-1577 (fax)

  • Page 2: Revision History

    KSZ8873MML Evaluation Board User’s Guide Revision History Revision Date Summary of Changes 04/30/09 Initial Release 01/11/11 Update description Micrel, Inc. January 11, 2011 Confidential Rev. 1.1 2/11...

  • Page 3: Table Of Contents

    Table 1: Feature Setting Jumpers ....................6 Table 2: Reserved Jumpers ......................7 Table 3: LED Modes ........................9 Table 4: MII Mode Settings......................9 List of Figures Figure 1: KSZ8873MML Evaluation Board Block Diagram ............5 Micrel, Inc. January 11, 2011 Confidential Rev. 1.1...

  • Page 4: Introduction

    5V DC wall power supply is 2.5x5.5x9.5mm or 0.1x0.218x0.375inch) Hardware Description The KSZ8873MML Evaluation Board is in a compact form factor and can sit on a bench near a computer. There are three options for configuration: strap in mode, EEPROM mode, and SPI mode.

  • Page 5: Strap In Mode

    Note that even if no external strap in values are set, internal pull up and pull down resistors will set the KSZ8873MML default configuration. Section 4.1.1 covers each jumper on the board and describes its function. To Micrel, Inc.

  • Page 6: Feature Setting Jumpers

    JP3 and JP9 are connected, JP21, JP25 have jumpers fitted between pins 2 to 3. 4.1.1 Feature Setting Jumpers The evaluation board provides jumpers to allow easy setting of strap in configurations for the KSZ8873MML. Table 1 describes the jumpers and their functionalities. Table 1: Feature Setting Jumpers JUMPER KSZ8873MML...

  • Page 7: I2C Master (Eeprom) Mode

    There are two way to power up the evaluation board: a). Connect the 5 VDC power supply to the KSZ8873MML when JP44 pin1-2 is closed. b). 5 VDC power source from the USB port when JP44 pin 2-3 is closed.

  • Page 8: Spi Slave Mode

    Serial Bus Config. (P2LED1) Pins 1-2 closed 3. Connect the computer’s USB port to the KSZ8873MML board with a USB port cable. 4. Remove the EEPROM from the evaluation board. (Optional) 5. There are two way to power up the evaluation board: a).

  • Page 9: 10/100 Ethernet Phy Ports

    4.4 10/100 Ethernet PHY Ports There are one 10/100 Ethernet PHY ports on the KSZ8873MML evaluation board. The ports can be connected to an Ethernet traffic generator or analyzer via standard RJ-45 connectors using CAT-5 cables. Each port can be used as either an uplink or downlink. Both ports support auto MDI/MDI-X, eliminating the need for cross over cables.

  • Page 10: Reference Documents

    KSZ8873MML Evaluation Board User’s Guide female MII port connector. This interface is normally used to connect the KSZ8873MML to an external PHY, for example the Micrel KS8721B. 5.0 Reference Documents KSZ8873MML Datasheet Rev. 1.0 (Contact Micrel for latest Datasheet) KSZ8873MML Evaluation Board Schematic Rev. 1.0 (Contact Micrel for latest Schematic) KSZ8873MML Evaluation Board Gerber files MIC29302WT Datasheet (Datasheet available at www.micrel.com)
  • Page 11 KSZ8873MML Evaluation Board User’s Guide Micrel, Inc. January 11, 2011 Confidential Rev. 1.1 11/11...

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