LC74761(1996) データシートの表示（PDF） - SANYO -> Panasonic
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LC74761 Datasheet PDF : 20 Pages
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LC74761, 74761M
Second byte
DA0 to DA7
7
6
5
4
3
Register name
—
HALF
INT
P14OUT
SEL
SECAM
SEL
IOS
State
0
0
1
0
1
0
1
0
1
Register content
Function
Second byte identification code
Normal mode
Half internal synchronous mode
Half tone output
High output in internal synchronous mode
In SECAM mode, only the character frame area is on.
In SECAM mode, the entire character display area is on.
Sets the mode setting pin to be an input pin.
Sets the mode setting pin to be an output pin.
0
BCOL1 BCOL0
Background color
2
BCOL1
1
0
0
Background color displayed
0
1
No background color (about 13 IRE)
0
1
0
No background color (about 23 IRE)
1
BCOL0
1
1
1
CVoutmt2 (CSYNC)
0
Outputs a color burst signal.
0
CBOFF
1
Stops the output of color burst signals.
Note: When the chip is reset by the RST pin, the register states (bits) are all cleared to 0.
Note
Selects P14 (3.58/4.43) output.
Selects the CVCR “on” period.
Switches the input/output direction of
the mode setting pins.
Determines whether a background color
is displayed. (Only valid in internal
synchronization mode.)
Only valid when either BCOL0 is 1 or
BCOL1 is 1.
8 COMMAND70: Display Control Setting Command 4
First byte
DA0 to DA7
7
6
5
4
3
2
1
0
Register name
—
—
—
—
—
—
—
LINS
State
1
1
1
1
0
0
0
0
1
Register content
Function
The command 7 identification code:
sets display control parameters.
Expansion command 0 identification code
Selects the lower 6 bits (bits 0 to 5)
Selects the upper 6 bits (bits 6 to B)
Note
Selects the upper or lower six bits when
halftone output line mode is specified.
Second byte
DA0 to DA7 Register name
State
Register content
Function
7
—
0
Second byte identification code
6
VCO
SELECT1
0
VCO frequency is 14.12 MHz
1
VCO frequency is 7.07 MHz
0
Turns off (low) sixth line halftone output.
5
LIN5
1
Turns on (high) sixth line halftone output.
0
Turns off (low) fifth line halftone output.
4
LIN4
1
Turns on (high) fifth line halftone output.
0
Turns off (low) fourth line halftone output.
3
LIN3
1
Turns on (high) fourth line halftone output.
0
Turns off (low) third line halftone output.
2
LIN2
1
Turns on (high) third line halftone output.
0
Turns off (low) second line halftone output.
1
LIN1
1
Turns on (high) second line halftone output.
0
Turns off (low) first line halftone output.
0
LIN0
1
Turns on (high) first line halftone output.
Note: When the chip is reset by the RST pin, the register states (bits) are all cleared to 0.
Note
Selects VCO oscillation frequency.
Used for the line 12 setting when LINS
is high.
Used for the line 11 setting when LINS
is high.
Used for the line 10 setting when LINS
is high.
Used for the line 9 setting when LINS is
high.
Used for the line 8 setting when LINS is
high.
Used for the line 7 setting when LINS is
high.
No. 4846-12/20
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