LC74775 データシートの表示（PDF） - SANYO -> Panasonic
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LC74775 Datasheet PDF : 35 Pages
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LC74775, 74775M
COMMAND6 (Synchronizing signal detection setup command)
• First byte
DA 0 to 7
7
6
5
4
3
2
Register
–
–
–
–
SEL0
MOD0
State
1
1
1
0
0
1
0
1
Contents
Function
Command 6 identification code.
Synchronizing signal control setup.
SEL0
0
0
1
1
MOD0
0
1
0
1
SEPOUT
DAV
Sliced data width
CSYNC
ST pulse signal
0
12 lines
1
DISLIN
1
10 lines
0
Normal output
0
MUT
1
CVIN is cut and CVOUT is held at the pedestal level
Notes
Switches the SEPOUT (pin 19) output
Switches the number of lines displayed
CVOUT switching
• Second byte
DA 0 to 7
7
6
5
4
3
2
1
0
Register
–
RN2
RN1
RN0
SN3
SN2
SN1
SN0
State
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 times HSYNC detected
0 (32)
4 (64)
8 (128)
16 (256)
SN3 SN2 SN1 SN0
0
0
0
0
0
0
0
1
0
0
1
0
0
1
0
0
1
0
0
0
Number of times HSYNC detected
Not output
32
64
128
256
Note: All registers are set to 0 when the LC74775/M is reset by the RST pin.
Notes
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).
Values in parentheses apply when RNE0
(COM18) is 1.
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).
No. 5919-15/35
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