Samsung DVD-R130, Service Manual, Page: 58 / 130

Block Diagrams
8-4 Samsung Electronics This Document can not be used without Samsung’s authorization.
8-3 System Block Diagram
RAM write
address
counter
Display RAM
Deco-
der
Decoder
Font ROM
Display
control
register
Shift register
Character output control
Background control
Video output control
Sync signal generator
Blinking and
reverse
video control
register
Vertical
display
position
register
Horizontal
display
position
register
Blinking and
reverse video
control circuit
Vertical dot
counter
Horizontal
dot counter
Vertical display
position
detector
Line control
counter
Horizontal
display position
detector
Character
control
counter
Vertical size
counter
Horizontal
size counter
Vertical
character
size register
Horizontal
character
size register
Output control
Data output
buffer
Data
slicer
circuit
AFC
circuit
8-bit latch
+
command
decoder
Serial to
parallel
converter
Sync
discrimina-
tion
Character
output dot
clock
generator
Composite
sync signal
separation
control
Sync
separator
data
separator
circuit
Timing generator
CTRL1
(CHABLK)
XtalIN XtalOUT
(MUTE)
CVCR CDLR CVIN CVOUT
CS
SIN
SCLK
RST
SCL
SDA
CPOUT
VCOIN
VCOR
SYNCJDG
OSCIN
OSCOUT
SYNIN
SEPC
SEPOUT
V
DD
1, V
DD
2, V
DD
3
V
SS
1, V
SS
2, V
SS
3