參數(shù)資料
型號(hào): LC74781
廠商: Sanyo Electric Co.,Ltd.
英文描述: On-Screen Display Controller LSI for VCR Products(用于錄象機(jī)的屏幕顯示控制器的大規(guī)模集成電路(LSI))
中文描述: 屏幕顯示控制器芯片的錄像機(jī)產(chǎn)品(用于錄象機(jī)的屏幕顯示控制器的大規(guī)模集成電路(LSI)的)
文件頁數(shù): 12/16頁
文件大?。?/td> 183K
代理商: LC74781
Second byte
Note: The register states are all set to zero when the LC74781/M is reset with the RST pin.
~
COMMAND6 (Synchronization signal detection setup command)
First byte
No. 4988-12/16
LC74781, 74781M
Register content
DA0 to DA7
Register name
State
Function
Note
7
0
Second byte identification bit
6
0
5
0
4
BCL
0
Background color present
Only valid with internal synchronization.
1
No background color (only the background level is set)
3
CB
0
Outputs a color burst signal.
Only valid when BCL is high.
1
Stops color burst signal output.
0
2
PH2
1
0
1
PH1
1
0
0
PH0
1
Sample background color phase
diagram for PAL mode color burst
*
: When 2fsc NTSC is used
Phase 2
Phase 1
Phase 0
Background color (phase)
NTSC
π
/2
*
In phase
*
3
π
/2
*
π
*
3
π
/4
π
/4
7
π
/4
5
π
/4
PAL
±
π
/2
In phase
π
/2
±
π
±3
π
/4
±
π
/4
π
/4
3
π
/4
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
Register content
DA0 to DA7
Register name
State
Function
Note
7
1
6
1
Command 6 identification code
Synchronization signal control settings
5
1
4
0
3
MOD1
0
Sync separator circuit signal
Switches the SEP
OUT
(pin 19) output
1
High level output during internal synchronization
0
Pin 5: Blank signal
Pin 8: Character signal
2
MOD0
Switches the BLANK (pin 5) and CHARA
(pin 8) outputs
1
Pin 5: Composite synchronization signal
Pin 8: External synchronization signal discrimination output signal
1
DISLIN
0
12 lines
Switches the number of display lines.
1
10 lines
0
MUT
0
Normal output
Switches CV
OUT
1
CV
IN
is cut and CV
OUT
is fixed at the pedestal level.
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LC74782 On-Screen Display Controller LSI for VCR Products(用于錄象機(jī)的屏幕顯示控制器的大規(guī)模集成電路(LSI))
LC74783 On-Screen Display Controller LSI for VCR Products(用于錄象機(jī)的屏幕顯示控制器的大規(guī)模集成電路(LSI))
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