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4-2 MPC860T (Rev. D) Fast Ethernet Controller Supplement MOTOROLA
PRELIMINARYÑSUBJECT TO CHANGE WITHOUT NOTICE
Table 4-1 shows the port D pin assignments.
4.1.1 Port D Registers
Port D has three memory-mapped, read/write, 16-bit control registers.
4.1.2 Enabling MII Mode
To enable MII mode, do the following:
1. Write 0x1FFF to PDPAR.
2. Write 0x1FFF to PDDIR.
Table 4-1. Port D Pin Assignment
Signal
Signal Function
PDPAR = 0
PDPAR=1
Input to On-Chip
Peripherals
PDDIR=0 PDDIR=1
PD15 PORT D15 L1TSYNCA MII-RXD3 (I) L1TSYNCA=GND
PD14 PORT D14 L1RSYNCA MII-RXD2 (I) L1RSYNCA=GND
PD13 PORT D13 L1TSYNCB MII-RXD1 (I) L1TSYNCB=GND
PD12 PORT D12 L1RSYNCB MII-MDC (O) L1RSYNCB=GND
PD11 PORT D11 RXD3 MII-TX-ERR (O) RXD3 = GND
PD10 PORT D10 TXD3 MII-RXD0 (I) Ñ
PD9 PORT D9 RXD4 MII-TXD0 (O) RXD4 = GND
PD8 PORT D8 TXD4 MII-RX_CLK (I) Ñ
PD7 PORT D7 RTS3\MII-RX-ERR(I) Ñ
PD6 PORT D6 RTS4 MII-RXDV (I) Ñ
PD5 PORT D5 REJECT2 MII-TXD3 (O) REJECT2=VDD
PD4 PORT D4 REJECT3 MII-TXD2 (O) REJECT3=VDD
PD3 PORT D3 REJECT4 MII-TXD1 (O) REJECT4=VDD
Fr
eescale S
emiconduct
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Freescale Semiconductor, Inc.
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