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參數(shù)資料
型號: LC74799
元件分類: 畫面疊加
英文描述: ON-SCREEN DISPLAY IC, PDIP30
封裝: 0.400 INCH, SDIP-30
文件頁數(shù): 7/32頁
文件大小: 322K
代理商: LC74799
No. 5834-15/32
LC74799, 74799M
COMMAND7 (Display control setup command)
First byte
DA
Register
Contents
Notes
0 to 7
State
Function
7—
1
6—
1
5—
1
4—
1
3—
0
2—
0
1—
0
0—
0
Command 7 identification code.
Display control setup.
Extended command 0 identification code
Note: All registers are set to 0 when the LC74799/M is reset by the RST pin.
Second byte
DA
Register
Contents
Notes
0 to 7
State
Function
7—
0Second byte identification bit
6CINSEL
0Blank area (the logical OR of the character and frame signals)
1Video signal display area
5CINCTL
0CVCR: off
1CVCR: on
4
VNPSEL
0V falling edge detection
1V rising edge detection
3
VSPSEL
0
VSEP: about 8.9 s (for NTSC)
1
VSEP: about 17.8 s (for NTSC)
2MSKERS
0Mask valid
1Mask invalid
1
MSKSEL
03H (NTSC)
1
20H (NTSC)
0EGL
0
Frame level 0 only (VBK0)
1
Two-stage frame level (VBK0 and VBK1)
CVCR on/off switching
Switches the V acquisition polarity in external
mode when internal V separation is used
Switches the internal V separation period
Clears the HSYNC and VSYNK masks
Switches the VSYNC mask
Switches the frame level.
(Only valid when BLK0 is 0 and BLK1 is 1.)
CVCR on signal switching
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