User`s manual

141
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
M37281MAH–XXXSP,M37281MFH–XXXSP
M37281MKH–XXXSP,M37281EKSP
Address 00C916
Address 00CB16
b7 b6 b5 b4 b3 b2 b1 b0
OSD port control register (PF) [Address 00CB
16 ]
b Name Functions After reset R
W
OSD Port Control Register
00
R
W
Fix this bit to “0”
00
2 0 : R signal output
1 : Port P5
2 output
0
R
W
3 Port P5 3 output signal
selection bit (G)
0 : G signal output
1 : Port P5
3 output
0
R
W
4 Port P5 4 output signal
selection bit (B)
0 : B signal output
1 : Port P5
4 output
0
R
W
5 Port P5 5 output signal
selection bit (OUT1)
0 : OUT1 signal output
1 : Port P5
5 output
0
R
W
6 Port P1 0 output signal
selection bit (OUT2)
0 : Port P1
0 signal output
1 : OUT2 output
0
R
W
Port P5 2 output signal
selection bit (R)
70
R
W
Fix this bit to “0”
1
0 : 4-adjustment-level analog is
output from pins R, G, B.
1 : Value which is converted
from 4-adjustment-level
analog to 2-bit digital is
output as below:
High-order: from R1, G1, B1
Low-order: from R0, G0, B0
0
R
W
R, G, B output method
selection bit (RGB2BIT)
b7 b6 b5 b4 b3 b2 b1 b0
B Name Functions After reset R
W
Port P4 Direction Register
00
1 to 4
0
0
Fix this bit to “0”
RW
R
W
R
5
6
Port P4 direction
register
0
R
W
7
0
R
Nothing is assigned. These bits are write disable bits.
When these bits are read out, the values are “0.”
Nothing is assigned. This bit is write disable bit.
When this bit is read out, the values is “0.”
Port P3 direction register (D4) [Address 00C9
16 ]
—
—
0
✽ When serial I/O is used
0 : Port P4 5 input mode
1 : S
OUT output ✽
0 : Port P4
6 input mode
1 : S
OUT output ✽