Sanyo DC-DA370 - Page 17

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IC BLOCK DIAGRAM & DESCRIPTION
MUTE
IN-L
GND
IN-R
VSS
OUT-L
IN-L
OUT-R
5
7
9
11
4
8
3
1
6
10
2
+
+
-
-
IN-R
IN-R
IN-R
IC442 TDA7269 ( Stereo Amplifier)
Vdda
REFERENCE
VOLTAGE
3
4
2
20
21
22
23
7
8
9~11,16,17
156
14
15
19
18
24
13
12
ANTIALIASING
FILTER
57kHz
BPF
(SCF)
SMOOTHING
FILTER
VREF
PLL
(57kHz)
CLOCK
RECOVERY
(1187.5Hz)
DATA
DECODER
SYNC/EC CONTROLLER
ERROR CORRECTION
(SOFT DECISION)
R A M
(24 BLOCK DATA)
C C B
TEST
MEMORY CONTROL
CLK(4.332MHz)
OSC / DIVIDER
SYNC
DETECT-1
SYNC
DETECT-2
Vssa
MPXIN
DO
CL
DI
CE
T1
T2
T3~T7
XIN
XOUT
Vddd
Vssd
RDS-ID
VREF
FLOUT CIN
SYNC
SYR
IC251 LC72722 ( RDS Signal Processor)
FM
IF
FM
DET
LEVEL
DET
S-CURVE
AM/FM
IF
BUFF
REG
GND
COMP
TUNING
DRIVE
AM
IF
AM
DET
VCC
AGC
PILOT
CANCEL
PILOT
DET
DECODER
ANTI-BIRDIE
STEREO
SW
FF
38k
FF
19k∠
VCO
304kHz
AM
RF.AMP
AM
MIX
AM
OSC
ALC
BUFF
P-DET
φ
FF
19k∠
2
π
1
2 3 4 5 6 7 8 9 10 11 12
24 23 22 21 20 19 18 17 16 15 14 13
IC231 LA1844ML ( Tuner System)
IC445 MM1453XF (Q Xpander with Spread Control)
18
2
34567
1718 16
15 14 13 12 11 10
V
CC QF2 QF3 QF4 QF5 QF6QF1
V
REF L IN
R IN PNR S/Q DET Q IN SPC R OUT L OUT
9
GND
VIRTUAL AUDIO
QXpander
PROCESSOR
Bias