lc74775 Sanyo Semiconductor Corporation, lc74775 Datasheet - Page 16

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

COMMAND7 (Display control setup command)
• First byte
• Second byte
Note: All registers are set to 0 when the LC74775/M is reset by the RST pin.
DA 0 to 7
DA 0 to 7
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
MSKERS
VNPSEL
MSKSEL
Register
VSPSEL
Register
CINSEL
CINCTL
EGL
–
–
–
–
–
–
–
–
State
State
1
1
1
1
0
0
0
0
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Command 7 identification code.
Display control setup.
Extended command 0 identification code
CV
V rising edge detection
VSEP: about 8.9 µs (NTSC)
VSEP: about 17.8 µs (NTSC)
Mask valid
Mask invalid
3H (NTSC)
20H (NTSC)
Frame level 0 only (VBK0)
Two-stage frame level (VBK0 and VBK1)
Second byte identification bit
Blank area (The logical OR of the character and frame signals)
Video signal display area
CV
V falling edge detection
CR
CR
: off
: on
LC74775, 74775M
Contents
Contents
Function
Function
CV
CV
Switches the V acquisition polarity in external
mode when internal V separation is used.
Switches the internal V separation period
Clears the HSYNC and VSYNK masks
Switches the VSYNC mask
Switches the frame level.
(Only valid when BLK0 is 0 and BLK1 is 1.)
CR
CR
on signal switching
on/off switching
Notes
Notes
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