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Application:
GPIO
Port C Control Register
(PCRC)
X:$FFFFBF
Read/Write
Reset = $0
Port C Direction Register
X:$FFFFBE
Read/Write
Reset = $0
PCn = 0 & PDCn = 0 -> Port pin PCn disconnected
PCn = 1 & PDCn = 0 -> Port pin PCn configured as input
PCn = 0 & PDCn = 1 -> Port pin PCn configured as output
PCn = 1 & PDCn = 1 -> Port pin configured as ESAI
Port C GPIO Data Register
X:$FFFFBD
Read/Write
Reset = undefined
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
MOTOROLA
Port C (ESAI)
23
11
10
*
PC11
PC10
0
= Reserved, Program as 0
*
11
23
*
PDC11
(PRRC)
0
= Reserved, Program as 0
*
23
11
10
*
PD11
PD10
(PDRC)
0
= Reserved, Program as 0
*
Figure D-34 GPIO Port C
DSP56367
9
8
7
6
PC9
PC8
PC7
PC6
10
9
8
7
6
PDC9
PDC8
PDC7
PDC6
PDC10
9
8
7 6
5
PD9
PD8
PD7 PD6
PD5
Programmer's Reference
Date:
Programmer:
Sheet 2 of 4
5
4
3
2
1
0
PC5
PC4
PC3 PC2 PC1
PC0
5
4
3
2
1
PDC5
PDC4
PDC3 PDC2
PDC1 PDC0
4
3
2
1
0
PD4 PD3
PD0
PD2 PD1
D-49
0
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