LC74793 查看數據表（PDF） - SANYO -> Panasonic
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LC74793 Datasheet PDF : 24 Pages
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LC74793, 74793JM
Command 3 (Synchronizing signal detection command 1)
• First byte
DA 0 to 7
7
6
5
4
3
2
1
0
Register
—
—
—
—
—
—
—
—
Status
1
1
1
1
0
0
1
1
Contents
Function
First byte identification bit
Command 3 identification code.
Synchronizing signal detection settings 1.
Notes
• Second byte
DA 0 to 7
7
6
Register
—
RN2
5
RN1
4
RN0
3
SN3
2
SN2
1
SN1
0
SN0
Status
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Contents
Function
Second byte identification bit
RN2
0
0
0
1
RN1
0
0
1
0
RN0
0
1
0
0
Number of HSYNC detections
0 (32)
4 (64)
8 (128)
16 (256)
SN3 SN2 SN1 SNO
0
0
0
0
0
0
0
1
0
0
1
0
0
1
0
0
1
0
0
0
Number of HSYNC detections
No detection performed
32
64
128
256
Note: All registers are cleared to 0 when the IC is reset by the RST pin.
Notes
External synchronizing signal detection
control.
Signal absent → present discrimination.
Sets the sampling period during which SYNC
is continuously detected in the horizontal
synchronizing signal period (1H).
Values in parentheses apply when RNE0
(COM4) is set to 1.
External synchronizing signal
detection control.
Signal present → absent
discrimination.
Sets the sampling period during which
SYNC cannot be detected
consecutively in the horizontal
synchronizing signal period (1H).
No. 5966-11/24
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