lc74775 Sanyo Semiconductor Corporation, lc74775 Datasheet - Page 22

• Manufacturer Part Number: lc74775
• Description: Vps/pdc Video On-screen Display
• Manufacturer: Sanyo Semiconductor Corporation

COMMAND18 (Display control setup command)
• Second byte
Note: All registers are set to 0 when the LC74775/M is reset by the RST pin.
• First byte
DA 0 to 7
DA 0 to 7
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
Register
Register
SJNS3
SJNS2
SJNS1
SJCS1
SJCS0
RNE0
–
–
–
–
–
–
–
–
–
–
State
State
1
1
1
1
1
0
1
1
0
0
0
1
0
1
0
1
0
1
0
1
0
1
Second byte identification bit
Sync discrimination signal absent
Sync discrimination signal absent
in parentheses
Command 7 identification code.
Display control setup.
Extended command B identification code
SJCS1
SJNS3
0
0
1
0
0
0
0
1
1
1
1
SJCS0
0
1
0
LC74775, 74775M
SJNS2
0
0
1
1
0
0
1
1
Contents
Contents
Function
Function
677 ns (1/3)
903 ns (1/4)
450 ns (1/2)
PAL
SJNS1
0
1
0
1
0
1
0
1
present: normal value
present: value shown
Number of times
1117 ns (1/4)
558 ns (1/2)
838 ns (1/3)
None
NTSC
128
256
16
32
64
4
8
Changes the discrimination value for the sync
discrimination signal absent
transition
Sync discrimination.
HSYNI signal extraction clock selection.
Setting for the noise rejection circuit used for
sync discrimination signal absent
transition.
The sync signal absent state is recognized
when the number of high-level signals shown
in the table is input during a 1H period.
Notes
Notes
No. 5919-22/35
present
present