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參數(shù)資料
| 型號(hào)： | 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(yè)數(shù)： | 15/23頁(yè) |
| 文件大?。?/td> | 209K |
| 代理商： | LC74789 |
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DA
Register
Contents
Notes
0 to 7
State
Function
7
—
1
6
—
1
Command 6 identification code.
5
—
1
Sets up synchronizing signal control.
4
—
0
3
SEL0
0
1
2
MOD0
0
1
1
DISLIN
0
12 lines
Switches the number of lines displayed.
1
10 lines
0
MUT
0
Normal output
CV
OUT
switching
1
CV
IN
is cut and CV
OUT
is held at the pedestal level.
SEL0
0
0
1
1
MOD
0
1
0
1
SEPOUT output
Sync separator signal
Low-level output
High-level output
ST pulse signal
No. 5732-15/23
LC74789, 74789M, 74789JM
COMMAND6 (Synchronizing signal detection setup command)
First byte
Switches the SEP
OUT
(pin 19) output.
Second byte
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
1
SN1
0
1
0
SN0
0
1
Note: All registers are set to 0 when the LC74789/M/JM is reset by the RST pin.
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
0
0
0
1
RN1
0
0
1
0
RN0
0
1
0
0
Number of times HSYNC detected
0 times
4 times
8 times
16 times
SN3
0
0
0
0
1
SN2
0
0
0
1
0
SN1
0
0
1
0
0
SN0
0
1
0
0
0
Number of times HSYNC detected
Not detected
32 times
64 times
128 times
256 times
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| LC74789-9810-E | 制造商:ON Semiconductor 功能描述:ON-SCREEN DISPLAY CONTROL - Ammo Pack 制造商:ON Semiconductor 功能描述:FNFLD / ON-SCREEN DISPLAY CONTROL |
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| LC74789N | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:LC74789N |
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