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Port Mode Register C (PMRC)
Bit :
7
—
Initial value :
1
R/W :
—
Port mode register C (PMRC) controls switching of each pin function of port 8. The switching is
specified in a unit of a bit.
PMRC is an 8-bit read/write enable register. When reset, PMRC is initialized to H'C5.
Bits 7, 6, 2, and 0 Reserved Bits: Reserved bits. When the bits are read, 1 is always read. The
write operation is invalid.
Bit 5 P85/B Pin Switching (PMRC5): PMRC5 sets whether to use the P85/B pin as a P85 I/O
pin or a B pin of the OSD color signal output.
Bit 5
PMRC5
Description
0
P85/B pin functions as a P85 pin
1
P85/B pin functions as a B output pin
Bit 4 P84/G Pin Switching (PMRC4): PMRC4 sets whether to use the P84/G pin as a P84 I/O
pin or a G pin of the OSD color signal output.
Bit 4
PMRC4
Description
0
P84/G pin functions as a P84 I/O pin
1
P84/G pin functions as a G output pin
Bit 3 P83/R Pin Switching (PMRC3): PMRC3 sets whether to use the P83/R pin as a P83 I/O
pin or a R pin of the OSD color signal output.
Bit 3
PMRC3
Description
0
P83/R pin functions as a P83 I/O pin
1
P83/R pin functions as a R output pin
6
5
—
PMRC5
PMRC4
1
0
—
R/W
R/W
4
3
PMRC3
0
0
R/W
Rev. 1.0, 02/00, page 241 of 1141
2
1
—
PMRC1
1
0
—
R/W
(Initial value)
(Initial value)
(Initial value)
0
—
1
—
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