DSP56303 FREESCALE [Freescale Semiconductor, Inc], DSP56303 Datasheet - Page 276

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

Programming Reference
B-32
Application:
GPIO
Figure B-23. Port C Registers (PCRC, PRRC, PDRC)
Port C Control Register (PCRC)
Reset = $000000
PDCn = 1 → Port Pin is Output
PDCn = 0 → Port Pin is Input
Port C Direction Register (PRRC)
Reset = $000000
if port pin n is GPIO input, then PDn reflects the
value on port pin n
if port pin n is GPIO output, then value written to
PDn is reflected on port pin n
Port C GPIO Data Register (PDRC) X:$FFFFBD Read/Write
Reset = $000000
PCn = 1 → Port Pin configured as ESSI
PCn = 0 → Port Pin configured as GPIO
23
23
23
*
*
*
0
0
0
*
*
*
0
0
0
6
6
6
PRC5
PCC5
PDC5
5
5
5
DSP56303 User’s Manual, Rev. 2
PRC4
PCC4
PDC4
4
4
4
PRC3
PCC3
PDC3
3
3
3
Port C (ESSI0)
PRC2
PCC2
PDC2
2
2
2
PRC1
PCC1
PDC1
1
1
1
PRC0
PCC0
PDC0
0
0
0
X:$FFFFBF Read/Write
X:$FFFFBE Read/Write
*
= Reserved, Program as 0
Date:
Programmer:
Freescale Semiconductor
Sheet 2 of 4