KSZ8895ML Evaluation Board User’s Guide
Micrel Inc. Confidential
Page 9
3/26/2014
4.3 SPI Mode
From SPI interface to the KSZ8895ML, use a USB to SPI converter that allows accessing all of the
KSZ8895ML features and registers. The user can easily access the SPI interface using a computer
connected to the evaluation board’s USB port interface. Micrel provides a Windows 2000/XP based
program for the user to evaluate the KSZ8895ML’s full feature set. In addition to all the control
registers available via EEPROM programming, a host CPU connected to the KSZ8895ML’s SPI
interface will be able to access all static MAC table, the VLAN table, dynamic MAC address table
and the MIB counters. Prepare the KSZ8895ML evaluation board for SPI mode configuration
follow these steps:
1. Copy the Micrel provided SPI interface software on your computer.
2. Set JP5 as specified in Table 4 for SPI mode configuration.
Table 4 SPI Mode Settings
Jumper
Description
Setting
JP1
SDA
Open
JP2 SCL
Open
JP3 SCL
Open
JP9 SPIQ
Open
JP4
Serial Bus Config. (PS0)
Open
JP5
Serial Bus Config. (PS1)
Closed
3.
Connect the computer’s USB port to the KSZ8895ML board with a USB port cable.
4.
There are two ways to power up the evaluation board:
•
Connect the 5 VDC power supply to the KSZ8895ML when JP44 pin1-2 is closed (default).
•
5 VDC power source comes from the USB port when JP44 pin 2-3 is closed.
5.
The KSZ8895ML will power up initial default configuration with the start switch in register 1
bit 0 = ‘0’ which means the switch is “off”. You can set the bit 0 =’1’ to start switch.
6.
Open the Windows and navigate to the directory where the Window SPI file is stored. Click its
icon to invoke the software.
7.
Program the desired settings using the Micrel SPI interface software. See the software
operation description section 5.2 for details.
4.4 10/100 Ethernet Ports
There are four 10/100 Ethernet ports on the KSZ8895ML evaluation board. The ports J1, J2, J3 and
J4 can be connected to a traffic generator/analyzer or a SmartBit via standard RJ45 connectors
using CAT-5 cables. Each port can be used as either an uplink or downlink. All ports support auto
MDI/MDIX so there is no need for cross over cables.
J1 = RJ45 connector for port 1
J2 = RJ45 connector for port 2
J3 = RJ45 connector for port 3
J4 = RJ45 connector for port 4
