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參數(shù)資料
型號: LC74731W
元件分類: 畫面疊加
英文描述: ON-SCREEN DISPLAY IC, PQFP64
封裝: SQFP-64
文件頁數(shù): 16/38頁
文件大小: 153K
代理商: LC74731W
No. 6526-23/38
LC74731W
COMMAND53 (Display control setup command)
First byte
DA0 to 7
Register
Content
Notes
State
Function
7
1
Command 5 identification code
6
1
Display control settings
5—
0
4—
1
3
1
Extended command 3 identification code
2—
1
RSLG1
0
RSLG1 RSLG0
Switches the screen background color level
1
0
NO1
RS1
0
RDLG0
0
1
NO2
RS2
1
0
NO3
RS3
Second byte
Note that all registers are set to 0 when the LC74731W is reset by the RST pin.
SYnin: CVIDEO (Built-in sync separator circuit)
SYNin: HSYNC
SEPin: None (internal vertical separation)
SEPin: VSYNC
or
:VSYNC
SYNin: HD
SYNin: CSYNC (internal vertical separation)
SEPin: CSYNC (internal vertical separation)
SEPin: None
DA0 to 7
Register
Content
Notes
State
Function
7
0
Second byte identification bit
6—
0
5
CTL3
0
Internal vertical separation circuit
Switches the VSYNC signal input
1
External input
4
SP0SEL
0
CSYNC (sync separator output)
Switches the SEPout pin output
1
Halftone output
3
PALAL4
0
Normal
1
Always use 4 fsc timing (PAL)
2
IHSEL
0
SYNin pin input signal
Switches the internal vertical separation input
1
SEPin pin input signal
signal
1
VSSEL
0
Negative polarity
Switches the SEPin input polarity
1
Positive polarity
0
HSSEL
0
Negative polarity
Switches the SYNin input polarity (Invalid for
1
Positive polarity
CVIDEO input)
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