DSP56303 FREESCALE [Freescale Semiconductor, Inc], DSP56303 Datasheet - Page 277

• Manufacturer Part Number: DSP56303
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Freescale Semiconductor
Application:
GPIO
Figure B-24. Port D Registers (PCRD, PRRD, PDRD)
Port D Control Register (PCRD)
Reset = $000000
PDCn = 1 → Port Pin is Output
PDCn = 0 → Port Pin is Input
Port D Direction Register (PRRD)
Reset = $000000
if port pin n is GPIO input, then PDn reflects the
value on port pin n
if port pin n is GPIO output, then value written to
PDn is reflected on port pin n
Port D GPIO Data Register (PDRD) X:$FFFFAD Read/Write
Reset = $000000
PCn = 1 → Port Pin configured as ESSI
PCn = 0 → Port Pin configured as GPIO
23
23
23
*
*
*
0
0
0
*
*
*
0
0
0
6
6
6
PRD5
PCD5
PDD5
5
5
5
DSP56303 User’s Manual, Rev. 2
PRD4
PCD4
PDD4
4
4
4
PRD3
PCD3
PDD3
3
3
3
Port D (ESSI1)
PRD2
PCD2
PDD2
2
2
2
PRD1
PCD1
PDD1
1
1
1
PRD0
PCD0
PDD0
0
0
0
X:$FFFFAF Read/Write
X:$FFFFAE Read/Write
*
= Reserved, Program as 0
Date:
Programmer:
Programming Sheets
Sheet 3 of 4
B-33