Sony WRR-805A, Service Manual

Page: 33 / 54

4-3 WRR-805A (CE, AU)
IC
PLL FREQUENCY SYNTHESIZER
—TOP VIEW—
OSC
IN
OSC
OUT
VP
V
CC
DO
OUT
GND
FIN
IN
FIN
IN
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Ø
R
OUT
Ø P
OUT
LD/fout
OUT
ZC
IN
PS
IN
LE
IN
DATA
IN
CLOCK
IN
INPUTS
CLOCK
DATA
FIN
FIN
LE
OSC
PS
ZC
OUTPUTS
DO
LD
OSC
Ø P, Ø R
: CLOCK
: SERIAL DATA
: PRESCALER
: PRESCALER COMPLEMENTARY
: LOAD ENABLE
: OSCILLATOR
: POWER SAVING MODE CONTROL
: HIGH-IMPEDANCE CONTROL
: CHARGE PUMP
: LOCK DETECT/PHASE COMPARATOR
MONITORING
: OSCILLATOR
: PHASE COMPARATOR
18-BIT LATCH
BINARY
7-BIT
SWALLOW
COUNTER
BINARY 11-BIT
PROGRAMMABLE
COUNTER
PROGRAMMABLE DIVIDER
CONTROL CIRCUIT
11-BIT LATCH 7-BIT LATCH
17-BIT LATCH
3-BIT LATCH
LDS
SW
FC
fr
fp
fr
fp
LD
fp
14-BIT LATCH
LE
LE
SW
MD
19-BIT SHIFT REGISTER
19-BIT SHIFT REGISTER CNT
PROGRAMMABLE
REFERENCE DIVIDER
BINARY 14-BIT
REFERENCE COUNTER
Ø P
Ø
R
15
16
VP
DO
ZC
3
5
13
LD/fout
14
OSC
OSC
1
2
CRYSTAL
OSCILLATOR
CIRCUIT
LE
11
DATA
CLOCK
10
9
1-BIT
CONTROL
LATCH
LD/fr/fp
SELECTOR
LOCK
DETECTOR
SUPER
CHARGER
CHARGE
PUMP
FIN
FIN
7
8
PRESCALER
64/65, 128/129
PS
12
INTERMITTENT
MODE CONTROL
(POWER SAVE)
PHASE
COMPARATOR
RF AMPLIFIER/MIXER
—TOP VIEW—
LNA
IN
GND
V
CC
1
V
CC
2
IF BYP
IF2
OUT
IF1
OUT
1
2
3
4
5
6
7
14
13
12
11
10
9
8
LNA
OUT
GND
GND
RF
IN
GND
DEC
LO
IN
IF BYP
5
10 pF
V
CC
2
4
IF2 OUT
6
IF1 OUT
22
RF IN
11
LNA IN
1
V
CC
1
3
LNA
MIXER
RF
AMP
LNA OUT
14
DEC
9
LO IN
8
GND LX
5 4
1 2 3
4
3
1
2
LX
EXT
CE
OUT
GND
5
LX
EXT
CE
OUT
; SWITCHING TERMINAL (OPEN DRAIN)
; EXTERNAL TRANSISTOR DRIVE (CMOS OUTPUT)
; CHIP ENABLE
; STEP-UP OUTPUT VOLTAGE MONITOR
V
LX
LIMITER SLOW START V REF.
BUFFER
PWM CONTROLE
OSC
CHIP ENABLE
PHASE
COMPARATOR
_
+
2
OUT
ERROR AMP.
LX
4
GND
5
EXT
3
CE
1
OUT
CE
EXT
LxSW
C-MOS PWM STEP-UP DC/DC CONVERTER
—TOP VIEW—
1 2
GND
3
NC
4
GND
OUT V
DD
2
4
1
2
V
DD
V
REF
+
_
4
GND
1
OUT
OUT V
DD
VOLTAGE DETECTOR
—TOP VIEW—
1
2
3
4
5
6
7
8
9
10 11
12
13
14
15
16
17
18
19
20
+
_
G
G
V
CC
NE575
OP AMP
OP AMP
SUM
AMP
SUM
AMP
V
REF
10k
10k
GAIN CELL
GAIN CELL
10k
10k
RECTIFIER
3.9k
3.9k
RECTIFIER
GND
+ V
IN
1
_ V
IN
1
V
OUT
1
RECT.
IN
1
C
RECT
1
SUM
OUT
1
COMP.
IN
1
V
REF
GAIN CELL
IN
1
+ V
IN
2
_ V
IN
2
V
OUT
2
RECT.
IN
2
C
RECT
2
SUM
OUT
2
COMP.
IN
2
SUM NODE 2
GAIN CELL
IN
2
+
_
+
_
+
_
LOW VOLTAGE COMPANDOR
—TOP VIEW—
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