lc74772v Sanyo Semiconductor Corporation, lc74772v Datasheet - Page 9

• Manufacturer Part Number: lc74772v
• Description: Camcorder On-screen Display Lsi
• Manufacturer: Sanyo Semiconductor Corporation

First byte
First byte
Note: This register is set to 0 on a reset (either by the RST pin or by a command reset).
DA0 to DA7
DA0 to DA7
COMMAND 3 (General-purpose port control)
COMMAND 4 (Display control: reverse video and blinking)
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
Register name
Register name
PORT
BLK1
BLK0
OUT
OUT
OUT
RVS
SET
BLK
P11
P10
ON
ON
P9
—
—
—
—
—
—
—
—
State
State
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
0
0
1
0
1
0
1
0
1
Command 3 identification code
System 4 functions as a normal character and border outputs.
System 4 functions as general-purpose ports.
The pin 11 output is set to low.
The pin 11 output is set to high.
The pin 10 output is set to low.
The pin 10 output is set to high.
The pin 9 output is set to low.
The pin 9 output is set to high.
Command 4 identification code
—
Characters for which the attribute is specified are displayed
in reverse video.
—
Characters for which the attribute is specified are
displayed blinking.
BLK1
0
0
1
1
BLK0
0
1
0
1
Register content
Register content
V
V
V
V
LC74772V
25 (PAL: 0.5 s)
30 (NTSC: 0.5 s)
50 (PAL: 1.0 s)
60 (NTSC: 1.0 s)
Function
Function
Operation
Controls the pin 10 (BLK4) and pin 11
(CHA4) outputs.
Sets the output when PORTSET is
set to 1.
Sets the output when PORTSET is
set to 1.
Sets the output for pin 9 during normal
operation (other than during a reset).
The blinking period setting
The duty is 60% for all types.
Character display on: 60%
Character display off: 40%
V: Vertical period
Note
Note
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