Sanyo AVM-2550S Training Manual page 50

IC801
CPU(C-003)
OSD Control Registers
OSD Control Register
Horiz. Position Register (address 00D1
Block Control Register
Vert. Position Register
Window Register
I/O Polarity Control Register (address 00D8
Raster Color Register
OSD
RAM
2 bytes x 32 characters x 2 lines
OSD
ROM
16 dots x 20 dots x 254 characters
Shift Register
16 bit
Data Slicer
(address 00D0 )
16
DATA SLICER CLOCK
)
16
(27MHz)
(address 00D2 00D3 )
16, 16
(address 00D4 00D5 )
16, 16
(address 00D6 00D7 )
16, 16
)
16
(address 00D9 )
16
Output Circuit
Closed-Caption Decoder Block Diagram
17
OSC1
24
OSC
OSC2
23
1
2
OSD
Controller
R
42
G
41
B
40
OUT1
39
– 47 –
C853
R854
Composite
Video signal
C854
R853
N/C
H-Sync
V-Sync
R output
G output
B output
BOX output