參數(shù)資料
型號: LC74789
廠商: Sanyo Electric Co.,Ltd.
英文描述: On-Screen Display Controller(屏幕顯示控制器)
中文描述: 屏幕顯示控制器(屏幕顯示控制器)
文件頁數(shù): 16/23頁
文件大?。?/td> 209K
代理商: LC74789
No. 5732-16/23
LC74789, 74789M, 74789JM
COMMAND7 (Display control setup command)
First byte
DA
Register
Contents
Notes
0 to 7
State
Function
7
1
6
1
Command 7 identification code.
5
1
Display control setup.
4
1
3
0
Extended command 0 identification code
2
0
1
SEL1
0
Vertical synchronizing signal (external V separation) input
Switches the SEP
IN
(pin 20) input.
Only valid when CTL3 is high.
1
Frame signal input
0
CTL3
0
Use internal V separation
Switches V separation.
1
Do not use internal V separation
Second byte
DA
Register
Contents
Notes
0 to 7
State
Function
7
0
Second byte identification bit
6
CINSEL
0
Blanking area (The logical OR of the character and frame signals)
CV
CR
on signal switching
1
Video signal display area
5
CINCTL
0
CV
CR
: off
CV
CR
: on
V falling edge detection
CV
CR
on/off setting
1
4
VNPSEL
0
Switches the V acquisition polarity in external mode
1
V rising edge detection
when internal V separation is used.
3
VSPSEL
0
VSEP: about 8.9 μs (for NTSC)
Switches the internal V separation period.
1
VSEP: about 17.8 μs (for NTSC)
2
MSKERS
0
Mask valid
Clears the HSYNC and VSYNC masks.
1
Mask invalid
1
MSKSEL
0
3H (for NTSC)
Switches the VSYNC mask.
1
20H (for NTSC)
0
EGL
0
Frame level 0 only (V
BK0
)
Switches the frame level.
Note: All registers are set to 0 when the LC74786/M/JM is reset by the RST pin.
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