KSZ8851SNL-Eval Evaluation Board User’s Guide
Rev. 1.1
Micrel, Inc.
April 21, 2010
5/11
1.0 Introduction
The KSZ8851SNL-Eval Evaluation Board is intended to provide a convenient and fast way to
evaluate or demonstrate the functionality and performance of this new 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.
This evaluation board is designed as a stand alone without microcontroller on board. By default
the KSZ8851SNL-Eval board comes with an operation of no EEPROM for KSZ8851SNL device.
Customer can directly wire the board for SPI interface. The purpose is to provide a simple tool
that can be used to evaluate the KSZ8851SNL device by connecting via headers to customer
provided Microcontroller or Non-PCI hardware platform.
Micrel provides a basic software driver based on SPI Interface solution and different operating
system platforms to evaluate the KSZ8851SNL functionality and performance. The software
includes a configuration utility to allow quick and easy device 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 KSZ8851SNL 32-pin Single-Port Ethernet Controller with SPI for host interface
•
5V/GND power input from headers
•
RJ-45 Jack for Fast Ethernet cable interface
•
HP Auto-MDIX for automatic detection and correction for straight-through and crossover
cables
•
Two on board LDO voltage regulators, one for VDD_IO and the other for 3.3VA
•
One AT93C46 for external EEPROM interface
•
Two LED indicators for port status and activity
•
One LED indicator for 3.3V output ready
•
One LED indicator for Power Management Event (PME) output status
•
Jumpers to configure strapping pin and VDD_IO voltage option
•
Headers to wire the SPI interface from external hardware platform
•
Manual reset button for quick reboot device after re-configuration of strapping pin
3.0 Evaluation Kit Contents
The KSZ8851SNL Evaluation Kit includes the following hardware:
•
KSZ8851SNL
Evaluation
Board
The KSZ8851SNL Data Sheet and Hardware Design Package with the following collaterals that
can be downloaded from Micrel’s website at
http://www.micrel.com
•
KSZ8851SNL Eval Board Schematic (PDF and OrCAD DSN file)
•
KSZ8851SNL Eval Board Gerber File (PDF version included)
•
KSZ8851SNL Eval Board User’s Guide (this document and included BOM)
•
KSZ8851SNL
IBIS
Model
