Sanyo PLC-SU20E

-57-
IC Block Diagrams
● TDA8395T <SECAM Decoder, IC161>
TUNING
5
TDA8395
BANDGAP
TUNING
ACC
CLOCHE
PLL
DE-
EMPHASIS
INTER-
FACE
CONTROL
IDENT
SWITCHING
CLOCHE ref.
PLL ref. GND
TESTVp
8
362
9
10
-(R-Y)
-(B-Y)
SAND
15
1
f ref./IDENT
16
CVBS
● TDA4665T <1H Delay Line, IC181>
SIGNAL
CLAMPIMG
LINE
MEMORY
SAMPLE
AND
HOLD
LP
SANDCASTLE
DETECTOR
FREQUENCY
PHASE
DETECTOR
DIVIDER
BY 192
LP
6MHz
CCO
DIVIDER
BY 2
SIGNAL
CLAMPIMG
LINE
MEMORY
SAMPLE
AND
HOLD
LP
pre-amplifiers
3MHz shifting clock
Addition
stage
output
buffers
analogure supply
digital supply
16
14
9
5
10 1
3
12
11
±(R-Y)
±(B-Y)
colour-difference
output signals
±(R-Y)
±(B-Y)
colour-difference
input signals
TDA4665
Gnd1
Vp2
Vp1
Gnd2
Sandcastle
pulse input