LC74782 View Datasheet(PDF) - SANYO -> Panasonic
Part Name
Description
Manufacturer
LC74782 Datasheet PDF : 16 Pages
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LC74782, 74782M
~ COMMAND6 (Synchronization signal detection setup command)
First byte
DA0 to DA7
7
6
5
4
3
2
1
0
Register name
—
—
—
—
MOD1
MOD0
DISLIN
MUT
State
1
1
1
0
0
1
0
1
0
1
0
1
Register content
Function
Note
Command 6 identification code
Synchronization signal control settings
Sync separator circuit signal
High level output during internal synchronization
Pin 5: Blank signal
Pin 8: Character signal
Pin 5: Composite synchronization signal
Pin 8: External synchronization signal discrimination output signal
12 lines
10 lines
Normal output
CVIN is cut and CVOUT is fixed at the pedestal level.
Switches the SEPOUT (pin 19) output
Switches the BLANK (pin 5) and CHARA
(pin 8) outputs
Switches the number of display lines.
Switches CVOUT
Second byte
DA0 to DA7 Register name
State
Register content
Function
7
—
0 Second byte identification bit
0
6
RN2
RN2 RN1 RN0 Number of times HSYNC detected
1
00
0
0
0 times
5
RN1
00
1
1
4 times
01
0
0
8 times
4
RN0
10
0
1
16 times
0
3
SN3
1
SN3 SN2 SN1 SN0 Number of times HSYNC detected
0
0 0 00
Not detected
2
SN2
1
0 0 01
32 times
0
0 0 10
1
SN1
1
0 1 00
64 times
128 times
0
1 0 00
0
SN0
1
256 times
Note: The register states are all set to zero when the LC74782/M is reset with the RST pin.
COMMAND7 (Display control setup command)
First byte
DA0 to DA7
7
6
5
4
3
2
1
0
Register name
—
—
—
—
EX1
PD1
EX0
PD0
State
1
1
1
1
0
1
0
1
0
1
0
1
Register content
Function
Command 7 identification code
Display control setup
MODE1 setting output
PORT DATA1 setting output
The output is set low.
The output is set high.
MODE0 setting output
PORT DATA0 setting output
The output is set low.
The output is set high.
Note
External synchronization signal detection
control
Signal absent to present transition
recognition
Setting for the sampling period when
SYNC can be detected consecutively in
the horizontal synchronization signal
period (1H).
External synchronization signal
detection control
Signal present to absent transition
recognition
Setting for the sampling period when
SYNC can not be detected
consecutively in the horizontal
synchronization signal period (1H).
Note
Switches the SEPOUT (pin 19) output
Switches the BLANK (pin 5) output
No. 4989-13/16
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