参数资料
型号: LC74794M
元件分类: 画面叠加
英文描述: ON-SCREEN DISPLAY IC, PDSO30
封装: MFP30S
文件页数: 7/30页
文件大小: 320K
代理商: LC74794M
No. 5557-15/30
LC74794, 74794M
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
Extended command 0 identification code
1—
0
0—
0
Second byte
Note: All registers are set to 0 when the LC74794/M is reset by the RST pin.
DA
Register
Contents
Notes
0 to 7
State
Function
7—
0
Second byte identification bit
6
CINSEL
0
Blank area (the logical OR of the character and frame signals)
CVCR on signal switching
1
Video signal display area
5
CINCTL
0CVCR: off
Turns CVCR on or off.
1CVCR:: on
4
VNPSEL
0V falling edge detection
1V rising edge detection
3
VSPSEL
0
VSEP: about 8.9 s (NTSC)
Switches the internal V separation period.
1
VSEP: about 17.8 s (NTSC)
2
MSKERS
0
Mask valid
Clears the HSYNC and VSYNK masks.
1
Mask invalid
1
MSKSEL
0
3H (NTSC)
Switches the VSYNC mask.
1
20H (NTSC)
0
EGL
0
Border level 0 only (VBK0)
1
Two-stage border level (VBK0 and VBK1)
Switches the V acquisition polarity in external
mode when internal V separation is used.
Switches the border level.
(Only valid when BLK0 is 0 and BLK1 is 1.)
Command 7 identification code
Display control setup
相关PDF资料
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LC74794 ON-SCREEN DISPLAY IC, PDIP30
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