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Application:
GP I/O
Port C
Control Register (PCC)
X:$FFC1 Read/Write
Reset = $0000
Port C
Data Direction
Register (PCDDR)
X:$FFC3 Read/Write
Reset = $0000
Port C
Data Register (PCD)
X:$FFE3 Read/Write
Reset = $0000
C - 28
DSP56156 General Purpose I/O Programming Sheet
Port C
15 14 13 12 11 10
*
* * *
0
0
0
Figure C-18 Control Register (PCC)
15 14 13 12 11 10
*
* * *
0
0
0
Figure C-19 Data Direction Register (PCDDR)
15 14 13 12 11 10
*
* * *
0
0
0
Figure C-20 Data Register (PCD)
PROGRAMMING SHEETS
Port C Pin Control
0 = General Purpose I/O Pin
1 = Peripheral Pin
9
8
CC11 CC10 CC9 CC8 CC7 CC6 CC5 CC4 CC3 CC2 CC1 CC0
0
0
Port C Data Direction Control
0 = Input
1 = Output
9
8
DC11 DC10 DC9 DC8 DC7 DC6 DC5 DC4 DC3 DC2 DC1 DC0
0
0
Port C Data (usually loaded by program)
9
8
PC11 PC10 PC9
PC8
0
0
Date:
Programmer:
Sheet 2 of 2
7
6
5
4
3
2
= Reserved, Program as zero
*
7
6
5
4
3
2
= Reserved, Program as zero
*
7
6
5
4
3
2
PC7
PC6
PC5
PC4
PC3
PC2
= Reserved, Program as zero
*
MOTOROLA
1
0
1
0
1
0
PC1
PC0
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