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參數資料
| 型號： | LC74794 |
| 元件分類： | 畫面疊加 |
| 英文描述： | ON-SCREEN DISPLAY IC, PDIP30 |
| 封裝： | SDIP-30 |
| 文件頁數： | 6/30頁 |
| 文件大小： | 320K |
| 代理商： | LC74794 |
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No. 5557-14/30
LC74794, 74794M
COMMAND6 (Synchronizing signal detection setup command)
First byte
DA
Register
Contents
Notes
0 to 7
State
Function
7—
1
6—
1
5—
1
4—
0
3
SEL0
0
Sync separator signal
Switches the SEPOUT (pin 19) output.
1
Output signal set by MOD0
2
MOD0
0
High-level output
Only valid when SEL0 is high.
1
ST pulse signal
1
DISLIN
0
12 lines
Switches the number of lines displayed.
1
10 lines
0
MUT
0
Normal output
CVOUT switching
1CVIN is cut and CVOUT is held at the pedestal level.
Command 6 identification code
Sets up synchronizing signal control.
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
RN2
0
1
5
RN1
0
1
4
RN0
0
1
3
SN3
0
1
2
SN2
0
1
SN1
0
1
0
SN0
0
1
External synchronizing signal detection control
Signal absent → signal present transition
detection
Sets the sampling period in which SYNC can
be detected continuously in the horizontal
synchronizing signal period (1H).
External synchronizing signal detection control
Signal present → signal absent transition
detection
Sets the sampling period in which SYNC
cannot be detected continuously in the
horizontal synchronizing signal period (1H).
RN2
RN1
RN0
Number of times HSYNC detected
000
0 times
001
4 times
010
8 times
100
16 times
SN3
SN2
SN1
SN0
Number of times HSYNC detected
00
Not detected
00
01
32 times
00
10
64 times
01
00
128 times
10
00
256 times
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| LC74799M | ON-SCREEN DISPLAY IC, PDSO30 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LC74794M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:On-Screen Display Controller LSI |
| LC74795 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:On-Screen Display Controller LSI |
| LC74795M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:On-Screen Display Controller LSI |
| LC74798 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:On-Screen Display Controller IC |
| LC74798M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:On-Screen Display Controller IC |
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