User`s guide

KSZ8864 Evaluation Board User’s Guide
Micrel Inc. Page 12 5/9/2014
4.6.2 Port 3 SW3-MII Jumper and Register Configuration
Modes JP42 Reg 223 Bit6 JP24 JP27
SW3-MII MAC
Mode with J9
used
Open
(default for
SW3-MII)
1 Pin 2-3 Close Pin 1-2 Close
SW3-MII PHY
Mode with J8
used
Open
(default for
SW3-MII)
0
(default for PHY
mode)
Pin 2-3 Close Pin 1-2 Close
Table 8 Configure for SW3-MII
4.6.3 Port 4 SW4-RMII Jumper Configuration for KSZ8864
Modes JP39 JP41 JP17 JP18
SW4-RMII
MAC to MAC
mode with J6
used
Closed Open is clock mode
(Device’s clock source
comes from X1 pin
25MHz and SM4RXC
pin provide 50MHz clock
to both RMII)
Pin 1-2 Close Pin 1-2-3
Open
SW4-RMII
MAC to PHY
mode with J7
used
Closed Open is clock mode
(Device’s clock source
comes from X1 pin
25MHz and SM4RXC
pin provide 50MHz clock
to both RMII)
Pin 1-2 Close Pin 1-2-3
Open
SW4-RMII
MAC to MAC
mode with J6
used
Closed Close is normal mode
(Device’s clock source
comes from SM4TXC
pin 50MHz external
reference clock)
Pin 1-2-3
Open
Pin 2-3 Close
SW4-RMII
MAC to PHY
mode with J7
used
Closed Close is normal mode
(Device’s clock source
comes from SM4TXC
pin 50MHz external
reference clock)
Pin 2-3 Close Pin 1-2-3
Open
Table 9 Configure for SW4-RMII