Micrel KSZ8463ML, User Manual

Page: 14 / 16

KSZ8463_eval_bd_user_guide_1.1.docx
Micrel, Inc. July 17, 2013
Confidential Rev. 1.1
14/16
3.8 List of Jumpers and Connectors
Jumper Description Setting
J12-13 FXSD pin connections Pins 1-2 closed: connect to SD signal
from fiber module
Pins 3-4 closed: ground the FXSD pins,
for copper mode
J14 USB IO voltage selection Close pins 1-2 or 2-3 to power USB to
serial interface. Either setting will work.
JP2 PWRDN Chip Power-down Place Jumper for full chip power-down
JP3, 9 Factory Usage Install no jumpers
JP10, 11 Power selection for the Fiber module Leave open when no Fiber Module
present
JP27 MII bypass Pins 1-2 closed: Enable MII bypass mode
Pins 2-3 closed: MII PHY mode normal
operation
JP28 Enable RMII mode reference clock output from
REFCLK_O pin Pins 1-2 closed: Enable
Pins 2-3 closed: Disable
JP32, 33 Enable MDIO interface through MII connector Place both jumpers to connect MDIO
signals from MII connector to KSZ8463
serial port.
When using SPI, do not install jumpers.
JP34, 35 KSZ8463 serial port connections Place both jumpers for USB port access
and SPI interface
JP36-38 GPIO7, GPIO9 and GPIO10 pin source
selection on GPIO Headers Pins 1-2 closed for KSZ8463RL/FRL
Pins 2-3 closed for KSZ8463ML/FML
JP77, 78 FXSD1, FXSD2 Fiber signal detect input for
Port 1 and Port 2 (not used)
JP79 Enable USB controller interface Close pins 1-2, 3-4, 5-6 and 7-8 to
connect USB controller to serial bus
JP301-305 Strapping options See Table 1
JP306 Not used
JP400 5V DC input selection See Table 2
JP403-406 Power-supply strapping options See Table 2
Table 9 List of Jumpers and Connectors