
34-18
MPC860 PowerQUICC UserÕs Manual
MOTOROLA
Part V. The Communications Processor Module
are cleared at system reset, which conÞgures all port D signals as general-purpose inputs.
Table describes port D signal defaults.
Specialized versions of the MPC860 multiplex the port D signals with other functions, such
as an ATM UTOPIA interface or 100BASE-T MII (media-independent interface). See the
speciÞc partÕs supplementary documentation for details.
34.5.1 Port D Registers
Port D has three memory-mapped, read/write control registers.
34.5.1.1 Port D Data Register
A read of the port D data (PDDAT) register returns the value of the signal, regardless of
whether it is an input or output. This allows output conßicts to be found on the signal by
comparing the written data with the data on the signal. A write to a PDDAT bit is latched,
and if conÞgured as an output, is driven onto its respective signal. PDDAT can be read or
written at any time. PDDAT is not initialized and is undeÞned by reset.
Table 34-17. Port D Pin Assignment
Signal
Pin Function
PDPAR[DDn] = 0
PDPAR[DDn] = 1
Input to On-Chip Peripherals
(Default)
PD15
PORT D15
L1TSYNCA
L1TSYNCA = GND
PD14
PORT D14
L1RSYNCA
L1RSYNCA = GND
PD13
PORT D13
L1TSYNCB
L1TSYNCB = GND
PD12
PORT D12
L1RSYNCB
L1RSYNCB = GND
PD11
PORT D11
RXD3
RXD3 = PA11 (RXD3)
PD10
PORT D10
TXD3
Ñ
PD9
PORT D9
RXD4
RXD4 = PA9 (RXD4)
PD8
PORT D8
TXD4
Ñ
PD7
PORT D7
RTS3
Ñ
PD6
PORT D6
RTS4
Ñ
PD5
PORT D5
REJECT2
REJECT2 = VDD
PD4
PORT D4
REJECT3
REJECT3 = VDD
PD3
PORT D3
REJECT4
REJECT4 = VDD
Summary of Contents for MPC860 PowerQUICC
Page 3: ...MPC860UM AD 07 98 REV 1 MPC860 PowerQUICC ª UserÕs Manual ...
Page 36: ...xxxvi MPC860 PowerQUICC UserÕs Manual MOTOROLA CONTENTS Paragraph Number Title Page Number ...
Page 78: ...I iv MPC860 PowerQUICC UserÕs Manual MOTOROLA Part I Overview ...
Page 88: ...1 10 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part I Overview ...
Page 114: ...3 16 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part I Overview ...
Page 226: ...8 32 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part II PowerPC Microprocessor Module ...
Page 262: ...9 36 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part II PowerPC Microprocessor Module ...
Page 274: ...III iv MPC860 PowerQUICC UserÕs Manual MOTOROLA Part III Configuration ...
Page 320: ...12 12 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part III Configuration ...
Page 325: ...MOTOROLA Part IV Hardware Interface IV v Part IV Hardware Interface ...
Page 326: ...IV vi MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 352: ...13 26 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
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Page 426: ...15 32 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 530: ...17 26 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 632: ...21 44 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 660: ...22 28 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
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Page 998: ...37 48 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part VI Debug and Test ...
Page 1016: ...A 10 MPC860 PowerQUICC UserÕs Manual MOTOROLA Appendixes ...
Page 1024: ...B 8 MPC860 PowerQUICC UserÕs Manual MOTOROLA Appendixes ...
Page 1030: ...C 6 MPC860 PowerQUICC UserÕs Manual MOTOROLA Appendixes ...
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