參數資料
型號: M37161MA-XXXSP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP42
封裝: 0.600 INCH, 1.78 MM PITCH, PLASTIC, SDIP-42
文件頁數: 107/129頁
文件大?。?/td> 1092K
代理商: M37161MA-XXXSP
Rev.1.00
2003.11.25
page 79 of 128
M37161M8/MA/MF-XXXSP/FP,M37161EFSP/FP
8.10.14 OSD Output Pin Control
The OSD output pins R, G, B and OUT can also function as ports
P52–P55. Set the corresponding bit of the OSD port control register
(address 00CB16) to “0” to specify these pins as OSD output pins, or
to “1” to specify as the general-purpose port P5.
The input polarity of the HSYNC and VSYNC, and the output polarity of
signals R, G, B, OUT can be specified with the I/O polarity control
register (address 00D8.) Set bits to “0” to specify positive polarity; “1”
to specify negative polarity (refer to Figure 8.10.13).
The structure of the OSD port control register is shown in Figure
8.10.29.
Fig. 8.10.29 OSD Port Control Register
0
b7 b6 b5 b4 b3 b2 b1 b0
OSD port control register (PF) [Address 00CB16]
B
Name
Functions
After reset
R W
OSD Port Control Register
0
2
0
3
0 : G signal output
1 : Port P53 output
0
Fix these bits to “0.”
Fix these bit to “0.”
R —
R W
W
0, 1
Port P53 output signal
selection bit (PF3)
4
0 : R signal output
1 : Port P54 output
0
R W
Port P54 output signal
selection bit (PF4)
0R W
0 : B signal output
1 : Port P52 output
Port P52 output signal
selection bit (PF2)
5
0 : OUT signal output
1 : Port P55 output
Port P55 output signal
selection bit (PF5)
7
0
Indeterminate —
6
0
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