M37281EKSP Datasheet, PDF (141/172 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

M37281MAH–XXXSP,M37281MFH–XXXSP,M37281MKH–XXXSP, M37281EKSP
Address 00C916
Port P4 Direction Register
b7 b6 b5 b4 b3 b2 b1 b0
0 _{Port P3 direction register (D4) [Address 00C916]}
B
Name
0 Fix this bit to “0”
Functions
After reset R W
0
RW
1 to 4 Nothing is assigned. These bits are write disable bits.
When these bits are read out, the values are “0.”
0
R—
5 ^{Port P4 direction}
register
0 : Port P45input mode
1 : SOUT output ✽
6
0 : Port P46input mode
1 : SOUT output ✽
7 Nothing is assigned. This bit is write disable bit.
When this bit is read out, the values is “0.”
0
RW
0
RW
0
R—
✽ When serial I/O is used
Address 00CB16
OSD Port Control Register
b7 b6 b5 b4 b3 b2 b1 b0
0
0 ^{OSD port control register (PF) [Address 00CB16]}
b
Name
0 Fix this bit to “0”
1 R, G, B output method
selection bit (RGB2BIT)
2 Port P52 output signal
selection bit (R)
3 Port P53 output signal
selection bit (G)
4 Port P54 output signal
selection bit (B)
5 Port P55 output signal
selection bit (OUT1)
6 Port P10 output signal
selection bit (OUT2)
7 Fix this bit to “0”
Functions
After reset R W
0 RW
0 : 4-adjustment-level analog is 0
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 signal output
0
1 : Port P52 output
0 : G signal output
0
1 : Port P53 output
0 : B signal output
0
1 : Port P54 output
0 : OUT1 signal output
0
1 : Port P55 output
0 : Port P10 signal output
0
1 : OUT2 output
0
RW
RW
RW
RW
RW
RW
RW
Rev.1.01 2003.07.16 page 141 of 170