KSZ8864 Evaluation Board User’s Guide
Micrel Inc.
Page 7
5/9/2014
read the external EEPROM, if EEPROM does not exist, the chip will use the default values and the
strap option setting for all internal registers.
4.1.1 Feature Setting Jumpers
The evaluation board provides jumpers to allow the user to easily set strap in configurations for the
KSZ8864. Table 1 describes the jumpers and their function in the open or closed state.
Table 1 Feature Setting Jumpers
Jumper
KSZ8864 Signal
2-pin Jumper Open
3-pin Jumper 1-2 Close
2-pin Jumper Closed
3-pin Jumper 2-3 Close
JP1
SCL
SPI and MIIM/SMI
EEPROM
JP2
SPIQ
SPI
EEPROM and MIIM/SMI
JP3
MDC
SPI and EEPROM
MIIM/SMI
JP4
MDIO
SPI and EEPROM
MIIM/SMI
JP8
PS0
EEPROM/SPI/SMI Setting. See Section 4.2 and 4.3
JP9
PS1
EEPROM/SPI/SMI Setting. See Section 4.2 and 4.3
JP48
Testing
Power of EEPROM comes
from VDDIO
Power of EEPROM comes
from 3.3V only (default)
JP10
SCONF0
MII Setting See Section 4.6
JP11
SCONF1
MII Setting See Section 4.6
JP17
3-pin
Default is 2-3
close for port 4
SW4- MII
1-2 Close: SW4-RMII
provides 50MHz clock
2-3 Close: SW4-MII or
SW4-RMII receive 50MHz
clock from opposite
JP18
3-pin
Default is 1-2
close for port 4
SW4- MII
1-2 Close: SW4-MII mode.
Detail see schematics
2-3 Close: SW4-RMII
interface without clock
provided
JP20 SM4RXD3 Disable
SW4-MII/RMII Flow
Control
Enable SW4- MII/RMII Flow
Control
JP21
SM4RXD2
SW4-MII/RMII Half Duplex
Mode
SW4-MII/RMII Full Duplex
Mode
JP22
SM4RXD1
SW4-MII/RMII 100BT mode
SW4-MII/RMII 10BT mode
JP23
SMRXD0
LED Mode 0:
PxLED1 = Link/Act
PxLED0 = Speed
LED Mode 1:
PxLED1 = 100Link/Act
PxLED0 = Full Duplex
JP24
3-pin
Default is 2-3
close for pot 3
SW3- MII
1-2 Close: SW3-RMII
provides 50MHz clock
2-3 Close: SW3-MII mode or
SW3-RMII receive 50MHz
clock from opposite
JP27
3-pin
Default is 1-2
close for port 3
SW3- MII
1-2 Close: SW3-MII mode.
Detail see schematics
2-3 Close: SW3-RMII
interface without clock
provided
JP29
SM3RXD3
Enable device flow control
Disable device flow control
