Micrel KSZ8873FLL, Руководство пользователя

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KSZ8873MLL/FLL/RLL Evaluation Board User’s Guide
Micrel, Inc. January 11, 2011
Confidential Rev. 1.1
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4.1.1 Feature Setting Jumpers
The evaluation board provides jumpers to allow easy setting of strap in configurations for the
KSZ8873MLL/FLL/RLL. Table 1 describes the jumpers and their functionalities.
Table 1: Feature Setting Jumpers
JUMPER KSZ8873MLL/FLL/RLL
SIGNAL
OPEN CLOSED
JP3 SPIQ SPI EEPROM
JP25 P2LED0 EEPROM/SPI Setting. See Section 4.2 and 4.3
JP21 P2LED1 EEPROM/SPI Setting. See Section 4.2 and 4.3
JP26 SMRXDV3 P3 MII Setting. Pull Up: PHY mode, Pull Down: MAC
mode
JP78 FXSD1 Pins 1-2 closed : Disable FEF feature of FX.
Pins 5-6 closed : Force port 1 TX mode
For KSZ8873MLL/RLL, close 5-6 since this device
doesn’t support FX mode.
For KSZ8873FLL, open JP77
JP77 FXSD2 Pins 1-2 closed : Disable FEF feature of FX.
Pins 5-6 closed : Force port 1 TX mode
For KSZ8873MLL/RLL, close 5-6 since this device
doesn’t support FX mode.
For KSZ8873FLL, open JP77
JP2 PWRDN Normal Operation KSZ8873MLL/FLL/RLL
Chip Power Down
JP101
P1FFC Pull Down = Disable
Pull Up(default) = Enable
JP102
P1DPX Pull Down = Half Duplex
Pull Up(default) = Full Duplex
JP103
P1SPD Pull Down = 10BT
Pull Up(default) = 100BT
JP104 P1ANEN Pull Down = Disable
Pull Up(default) = Enable
JP201
SMRXD30(P2FFC) Pull Down = Disable
Pull Up(default) = Enable
JP202
SMRXD31(P2DPX) Pull Down = Half Duplex
Pull Up(default) = Full Duplex
JP203
SMRXD32(P2SPD) Pull Down = 10BT
Pull Up(default) = 100BT
JP204
SMRXD33(P2ANEN) Pull Down = Disable
Pull Up(default) = Enable
JP301
P1LED1(P3FFC) Pull Down = Disable
Pull Up(default) = Enable
JP302
P1LED0(P3DPX) Pull Down(default) = Full Duplex
Pull Up = Half Duplex
JP303
P3SPD Pull Down(default) = 100BT
Pull Up = 10BT
JP304
SPIQ(XCLK) Pull Down = 50MHz
Pull Up(default) = 25MHz
Note: JP101, JP102, JP103, JP201, JP202, JP203 are only valid if Auto-Negotiation is disabled.