KSZ8895ML Evaluation Board User’s Guide
Micrel Inc. Confidential
Page 8
3/26/2014
Table 2 Reserved Jumpers and recommendation
Jumper Number
Description
Recommended Settings
JP19
SMRXDV
Open
JP24
PMRXDV
Open
JP37 SCRS
Open
JP38
SCOL
Open
JP40 Test
2
Open
JP41 MUX1
Open
JP42 MUX2
Open
4.2 EEPROM Mode
The evaluation board has an EEPROM to allow the user to explore more extensive capabilities of
the KSZ8895ML. The user can conveniently program the EEPROM on board using the USB port
from any computer with a Window’s environment and the Micrel provided software. This makes it
easy for the user to evaluate features like “broadcast storm protection” and “rate control”.
To prepare the KSZ8895ML evaluation board for EEPROM configuration follow these steps:
1.
Copy the Micrel provided EEPROM software to your computer.
2.
Set JP3 and JP9 as specified in Table 3 for EEPROM mode configuration. Make sure that the
EEPROM is installed on the board.
Table 3 EEPROM Mode Settings
Jumper
Description
Setting
JP1
SDA
Open
JP2 SCL
Open
JP3 SCL
Closed
JP9 SPIQ
Closed
JP4
Serial Bus Config. (PS0)
Open
JP5
Serial Bus Config. (PS1)
Open
3.
Connect the computer’s USB port to the KSZ8895ML board with a USB port cable.
4.
There are two way to power up the evaluation board:
a). Connect the 5 VDC power supply to the KSZ8895ML when JP44 pin1-2 is closed.
b). 5 VDC power source from the USB port when JP44 pin 2-3 is closed.
5. The KSZ8895ML will power up in its default configuration if there is no information in the
EEPROM.
6. Program the desired settings into the EEPROM using the Micrel software. See the software
description section 5.1 for details.
7. Press the manual reset button. The KSZ8895ML will reset and read the new configuration in
the EEPROM. After reset, the KSZ8895ML is ready for the operation with EEPROM
configuration.
