KSZ8864 Evaluation Board User’s Guide
Micrel Inc.
Page 8
5/9/2014
JP30
SM3RXD2
Disable Back Pressure
Enable Back Pressure
JP31
SM3RXD1
Drop excessive collision
packets
Do not drop excessive
collision packets
JP32
SM3RXD0
Aggressive back off disable
Aggressive back off enable
JP39
P1LED0
SW4-MII mode
SW4-RMII mode
JP41
P1LED1
Device is clock mode when use
RMII interface
Device is normal mode when
use RMII interface
JP42
P2LED0
SW3-MII mode
SW3-RMII mode
JP47
3-pin
Default is 1-2
close for DC
from 5V Jack
1-2 Close: 5V DC is from the
power jack of AC adapter
2-3 Close: 5V DC is from the
USB connector.
JP49
3-pin
Default is 1-2
close for 3.3V
1-2 Close: Provide 3.3V to port
4 connector for external single
PHY eval board
2-3 Close: Provide 5V to port
4 connector for external single
PHY eval board
JP50
3-pin
Default is 1-2
close for 3.3V
1-2 Close: Provide 3.3V to port
3 connector for external single
PHY eval board
2-3 Close: Provide 5V to port
3 connector for external single
PHY eval board
Table 2 Reserved Jumpers
Jumper Number
Description
Recommended Settings
JP19
SM4RXDV
Open
JP28
SM3RXDV
Open
JP34
SM3CRS
Open
JP35
SM3COL
Open
4.2 EEPROM Mode
The evaluation board has an EEPROM to allow the user to explore more extensive capabilities of
the KSZ8864. The user can conveniently program the EEPROM on board using the USB port from
any computer with a WIN 2000/XP 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 KSZ8864 evaluation board for EEPROM configuration follow these steps:
1.
Copy the Micrel provided EEPROM software to your computer.
2.
Set JP3, JP4, JP5 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
EEPROM
Closed
JP2 EEPROM
Closed
JP3 MDC
Open
