參數(shù)資料
型號: LC74794
廠商: Sanyo Electric Co.,Ltd.
英文描述: On-Screen Display Controller LSI(用于屏幕顯示控制器規(guī)模集成電路(LSI))
中文描述: 屏幕顯示控制器芯片(用于屏幕顯示控制器規(guī)模集成電路(LSI)的)
文件頁數(shù): 15/30頁
文件大?。?/td> 217K
代理商: LC74794
No. 5557-15/30
LC74794, 74794M
COMMAND7 (Display control setup command)
First byte
DA
0 to 7
7
6
5
4
3
2
1
0
Register
Contents
Notes
State
1
1
1
1
0
0
0
0
Function
Extended command 0 identification code
Second byte
Note: All registers are set to 0 when the LC74794/M is reset by the RST pin.
DA
0 to 7
7
Register
Contents
Notes
State
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Function
Second byte identification bit
Blank area (the logical OR of the character and frame signals)
Video signal display area
CV
CR:
off
CV
CR:
: on
V falling edge detection
V rising edge detection
VSEP: about 8.9 μs (NTSC)
VSEP: about 17.8 μs (NTSC)
Mask valid
Mask invalid
3H (NTSC)
20H (NTSC)
Border level 0 only (VBK0)
Two-stage border level (VBK0 and VBK1)
6
CINSEL
CV
CR
on signal switching
5
CINCTL
Turns CV
CR
on or off.
4
VNPSEL
3
VSPSEL
Switches the internal V separation period.
2
MSKERS
Clears the HSYNC and VSYNK masks.
1
MSKSEL
Switches the VSYNC mask.
0
EGL
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
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