Sanyo C28WP1 Service Manual page 14

SAA7283ZP <NICAM DECODER>
23
28
MIXREF
29
DQPSK
26 24 30 31 36 37 21 20 34 33 35 39 48 43
TDA9840 <STEREO/DUAL SOUND PROCESSOR>
V
i1
7
AF1
250mV RMS
(from 1st SC)
250mV RMS
(from 2nd SC)
8
AF2
V
i2
LEVEL
V
ipil 5
4
C
DCL
2
C
AGC
3
C
LP
22 32 25 45
27
40 41 42 50 49 51
-2dB
0 to 4.5dB
-2dB
0 to 4.5dB
TDA9840
STEREO
LEVEL AND
STEREO
ADJUSTMENT
DIGITAL
PLL
OSCILLATOR
XTAL
38 47 52 1 18 19
SAA7283ZP
2 46 44
REPRESENTS CONTROLLER BUS
C C
V V
D2
D1 i3
15 17 9
L/A/MONO
250MV RMS
0 to 4.5dB
A/MONO
L
R/B
250MV RMS
DIGITAL PLL
DIGITAL
AND
INTEGRATOR
DEMODULATOR
DITAL PLL
DIGITAL
AND
INTEGRATOR
DEMODULATOR
GENERATION
V
REF
OF
REFERENCE
VOLTAGES
19
6 16
18
1/2 Vp GND
Vp
-14-
7 6
8
15
17 3 4 11 5
12 16
i4 500mV RMS
10
V
o1
500mV RMS 14
6dB
V
o2
500mV RMS 13
6dB
V
12
500mV RMS
6dB
V
o4
11
500mV RMS
6dB
MUTE
DUAL bit
SCL
20
IIC BUS
SDA
1
CONTROL
STEREO
bit
CONTROL
POWER-ON
LOGIC
RESET
OP-R
OP-L
MAIN
o3
SCART
F2JE