參數(shù)資料
型號: M37274MA-084SP
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
中文描述: 單芯片8位CMOS微機隱蔽字幕解碼器和屏幕顯示控制器
文件頁數(shù): 98/147頁
文件大小: 2042K
代理商: M37274MA-084SP
98
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37274EFSP
PRELIMINARY
Notice: This is not a final specification.
Some paramentic limits are subject to change.
MITSUBISHI MICROCOMPUTERS
(15) OSD Output Pin Control
The OSD output pins R, G, B, and OUT1 can also function as ports
P5
2
, P5
3
, P5
4
and P5
5
. Set the corresponding bit of the OSD port
control register (address 00CB
16
) to “0” to specify these pins as OSD
output pins, or set it to “1” to specify it as a general-purpose port P5
pins. The OUT2 can also function as port P1
0
. Set the corresponding
bit of the port P1 direction register (address 00C3
16
) to “1” (output
mode). After that, switch between the OSD output function and the
port function by the OSD port control register. Set the corresponding
bit to “1” to specify the pin as OSD output pin, or set it to “0” to specify
as port P1 pin.
The input polarity of the H
SYNC
, V
SYNC
and output polarity of signals
R, G, B, OUT1 and OUT2 can be specified with the I/O polarity con-
trol register (address 0217
16
) . Set a bit to “0” to specify positive
polarity; set it to “1” to specify negative polarity (refer to Figure 78).
The OSD port control register is shown in Figure 100.
Fig. 100. OSD Port Control Register
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
0
2
3
0 : G signal output
1 : Port P5
3
output
0
0
0
Fix these bits to “0.”
R W
R W
R W
R W
0, 1,
7
Port P5
3
output signal
selection bit (G)
4
0 : B signal output
1 : Port P5
4
output
0
R W
Port P5
4
output signal
selection bit (B)
0
R W
0 : R signal output
1 : Port P5
2
output
Port P5
2
output signal
selection bit (R)
5
0 : OUT1 signal output
1 : Port P5
5
output
Port P5
5
output signal
selection bit (OUT1)
6
0 : Port P1
0
output
1 : OUT2 signal output
Port P1
0
output signal
selection bit (OUT2)
0
0
0
Note.
Set bit 0 of Port P1 direction register (address 00C3
16
) to "1" (output mode).
(
Note
)
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