參數(shù)資料
型號(hào): LC74781
元件分類: 畫(huà)面疊加
英文描述: ON-SCREEN DISPLAY IC, PDIP24
封裝: SDIP-24
文件頁(yè)數(shù): 4/16頁(yè)
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
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
PAL
0
π/2*
±
π/2
0
1
In phase*
In phase
0
1
0
3
π/2*
π/2
0
1
π*
±
π
1
0
3
π/4
±3
π/4
1
0
1
π/4
±
π/4
1
0
7
π/4
1
5
π/4
3
π/4
+
+
+
Register content
DA0 to DA7
Register name
State
Function
Note
7
1
6
1
Command 6 identification code
5
1
Synchronization signal control settings
4
0
3
MOD1
0
Sync separator circuit signal
Switches the SEPOUT (pin 19) output
1
High level output during internal synchronization
0
Pin 5: Blank signal
2
MOD0
Pin 8: Character signal
Switches the BLANK (pin 5) and CHARA
1
Pin 5: Composite synchronization signal
(pin 8) outputs
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 CVOUT
1
CVIN is cut and CVOUT is fixed at the pedestal level.
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PDF描述
LC74781M ON-SCREEN DISPLAY IC, PDSO24
LC74781M ON-SCREEN DISPLAY IC, PDSO24
LC74781 ON-SCREEN DISPLAY IC, PDIP24
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LC74782 ON-SCREEN DISPLAY IC, PDIP24
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