Sony SPP-904 User manual

MICROFILM
SERVICE MANUAL
CORDLESS TELEPHONE
E Model
SPECIFICATIONS
SPP-904

2121
SPP-904
5-5. SCHEMATIC DIAGRAM – BASE RF Section – • See page 28 for IC Block Diagram.
0.8
0.8
0.7
1.9
1.7 3.2 1.8
2
2.8
1.3
1.4 3.2 3.2 3.2
00
1.7 1.1 3.2 2.9
2.4
3.1
3.2
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
0.9
2.9
1.6
2.1
2.4
3
1
25
4
B.P.F.
6
ANT
GND
BASE MAIN
1
BASE RF BOARD
BOARD
VCC
LE
DATA
CLK
MOD
GND
GND
LO
IF
TX
BASE MAIN
2
BOARD
BASE MAIN
3
BOARD
MIX
MIX GND
05
TX OUT
TX GND1
TX VCC
TXB
TXE
TX GND2
PD1
VCC
XIN
XOUT
XBO
GND
RX VCC
RXB
RXE
RX GND
PD2
RST
SI
CPS
LOCK
MIX OUT
IN
24 23 22 21 20 19 18 17 16 15 14 13
12345678910 11 12
TP303
TP304
TP305
TP306
TP312
TP311
TP310
TP309
TP308
TP307
C382
C398
C378
C379
C380
C381
C383
R331
R397
R398
R399
C333
C314
C312
R306
L304
4.7µH
R328
R332
C339
C338
C337
C336
R309
R305 R307
C311
R340 R339
R316
R330
C397
R327
C357
R333
R321
R320
C358
C353
R319
R359
C367
C341 R326
C350
C351
C346
R317
C345
C343
C386
C360
C342
R341
R344
R348
C363
C319
C327 C344
C335
L306
C323
R329
C334
C309
C324
R361
Q312
C320
R322
C326
C321
R303
C325
C390
FT301 R304
C308
C305
C307
R342
L307
C373
1st MIXER, VCO,
PLL SYNTHESIZER
Q307
R353
C370
C368
R352
RT301 C310
C364
C365
C371
C372
R351
C369
R354
C376
C304
L302
C306
C302
TP302
C340
C348
C315 C301
C303
L310
L303
C375
R302
C374
C347
C349
C362
L352
L351
L301
L350
L355
L356 L357
L309
L353
L354
TP301
TP
D303
Q301
Q306
Q302
D302
TP
IC302
C366
100p
100p
33p
100p
100p
100p
100p
27
1k
1k
1k
33p
0.01
0.01
1k
4.7k
1k
0.22
35V
0.0022
0.0047
0.0033
10k
10k 3.3k
27p
4.7k 330k
0
10
100p
1k
6.8
10V
1.2k
10k
100k
0.01
0.01
0
1.5k
0.01
4p 10k
15p
100p
15p
390
15p
82p
0.01
10
6.3V
3p
1k
33
0
7p
33p
3p 0.01
3p
12nH
5p
390
5p
5p
5p
33k
2SC5065-Y
RX VCO
0.001
33
0.01
33p
6.8
33p
0.01
220
2p
7p
33p
150
6.8nH
6p
2SC5065-Y
TX AMP
TX AMP
39k
5p
4p
10 TX POWER
4.7K 33p
0.1
33p
0.01
100p
100
33p
18k
4p
33p
6.8nH
0.5p
12p
33p
0.01
2p 2p
2p
18nH
5.6nH
2p
47k
8p
8p
4p
3p
18nH
39nH
(RX VCO)
1SV314
2SC4095-R47
RF AMP
2SC5065-Y
2SA812(M)-M6A
TX B+
SWITCH
1SV270
(TX VCO)
M64884FP-C60J
IC302
0.001
(Page 23)
(Page 23)
(Page 23)

2323
SPP-904
BASE MAIN BOARD
1
1
234
5
3
2
BPF
BPF
R25
C23
C22 D3
C80
C81
R24
R37
RL1
C39
R38
IC4
C45
R64
R59
R58
R95
R96
R94 R93
Q4
R33
C38
C37
R88
R36
R20
C18
R17
R19
R21
C19
R18
R22 R23
C75
R16
C17
R13
R89
R15
C42
C12
C44
R90
C71
R34
R99
R87
C33
C32
C35
C78
R48
R84
C74
C63
D9
Q10 Q10
HOOK ON/OFF
RELAY DRIVE
S1
HANDSET LOCATOR
S2
PULSE TONE
DIAL MODE
R76
R75
R78
S2
S1
IC6 RH5VL28CA
R80
C48
R74
R79
R73
C60
C59
C58
C57
X1
R71
R72
R57
R55
R56
R44
R43
R47
R91
C13
IC1
C31
R86
C41
C43
C11
R11
R8
C9
R9
RT2
C8
C6
R6
R5
RT1 C7
R10
R46
C30
C61 C10
R42
C34 R14
R30
R45
R98
IC5
R70
R53
C47
D10
C46
C56
D13
C55
R65
Q11
R68
R69
R39
C54
C83
D11
C52
C53
R60
Q7
C73 C70 C72
R49
R50
R51
C82
RT3 C79
R41
C14
R52
R40
R66
R81
R92
R77
C4
C3
R3 C5
R4
C2
C1
D1
R27
R2
R54
R1
R26
R28
C25
C24
C68
FT1
C62
C77
C65 CT1
C64
X2 C66
C67
R61 C99
FT2
C28
C26
C27
R29
J1
T1
S3
FLASH
D6
D7
RL1
C50
J2
L2
3.9µH
BP L50
TP
R63
R67
L3
TP
TP
L6
D4
C20
Q3
C36
Q2
IC3
RT1
IC3
Q1
Q9
C49 C51
Q6
R62
Q8
CHARGE
CONTROL
CHARGE
DETECT
ANT1
Q12
150
1W
0.56
250V
0.001 HZ33-2
470p
1000V
470p
1000V
10k
1k
(2/2)
0.001
500V
330
PS2501-1
0.033
1k
10k
100k
1k
1k
47k 47k
2SC1623-L6
AF AMP
220k
0.1
100
10V
47k
100
8.2k
0.1
68
1k
8.2k
0.1
560
68k 680
0.0039
LINE TRANSFORMER
POWER SUPPLY
(12V)
100Ω
LINE
HYBRID AMP
22k
0.0056
22k
0
100k
0.47
50V
0.047
0.1
1k
1
68k
10M
3.9k
4.7
50V
0.47
50V
0.0022
0.01
1k
18k
0.0018
0.01
1N4148
2SC1623-L6
2.2k
1k
47k
2.2M
0.01
100k
470k
1k
1
100 16V
27p
27p
3.579545MHz
1k
22
47k
1k
10k
220
220
3.3k
100k
10
50V
LA8633V
0.047
100k
1
50V
0.0056
0.01
10k
470k
0.1
270
100K
0.0039
33p
10k
3.3k
200K 330p
2.2k
100k
0.01
0.1 47
10V
1k
0.1 39k
1k
1k
47k
MB89173PF-G-
256-BND
100k
27k
0.01
1N4148
0.0022
330
6.3V
HZ4B1
100
16V
220
2SD471-L
100k
100k
10
0.047
0.1
HZ7A3
100
16V
0.022
150
2SD471-L
Q7
+6V REGULATOR
7p 100p 0.001
1k
1k
4.7k
4p
20K 0.0022
18k
Q12
B+ SWITCH
(FOR TX SYSTEM)
RT3
MODULATION
SENSITIVITY
0.1
1k
22k
47k
0
2.2k
47k
220p
0.1
2.2k 220p
470k
2.2
50V
33p
1N4148
470
18k
1k
680
220k
0
0.01
0.001
47p
39p
2p
15p 10p
0.01
10.1MHz 100p
100p
4.7k 33p 4.7
50V
0.047
0.047
10k
MVR3338S
CHARGE
LINE
MPG3371X
(1/2)
0.047
(ANT)
(GND)
1.5k
1k
(ANT)
(MOD)
3.9nH
1N4148
2SC1623-L6
2.2
50V
2SC1623-L6
PREAMP
MC3361CDR2
2nd MIXER,
LIMITER AMP, DET,
AF AMP, SQUELCH CONTROL
2SC2714-Y
2SC1623-L6
Q11
+3V REGULATOR
2SC1623-L6
47k
2SD471-L
2SA812
TX
FREQUENCY
IF AMP
IC1
EXPANDER, COMPRESSOR,
LIMITER
SQ SENSITIVITY
RT2
TEL OUT LEVEL
+
–
CT1
BASE RF
BOARD
IF
GND
LO
GND
TX
MOD
ANT
GND
VCC
LE
DATA
CLK
3
BASE RF
BOARD
CHARGE
TERMINAL
DC IN 9V
BASE RF
BOARD
1
2
IC4
RINGER DETECT
IC6
BATTERY
VOLTAGE DETECT
IC5
SYSTEM
CONTROLLER
RESET SIGNAL
GENERATOR
MIX
IN
OSC1 OSC2 MIX OUT VCC LIMIT IN DEC2 DEC1 QUAD COIL AF
OUT
FL
IN
FL
OUT
SQ
IN
SCAN CONT
GND
MUTE
3216587
13 14 15 16 17 18 19 20 21 22 23 24
121110987654321
4
141516 1112 91013
DISCRI
VOLTAGE
VCC
LPF1
IN
LPF1
OUT
EXP
IN
EXP
VREC
INT
OUT
TEL
OUT
V HOLD
INT
CONT
CHG
CONT
FSK
OUT
STBY
GND
EXP MUTE CONT CMP MUTE CONT TX DATA IN CMP NF PRE IN PRE NF CMP V REC CMP OUT LPF2 IN LPF2 OUT VREF
1
2 34
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
42
42
41
40
39
38
37
11109876543
3
2
2
1
1
252627282930313233343536
DTMF MOD0
X0
X1
VCC
NC NC NC
NC
CHG IN
DTMF
LEDCHG2 LEDCHG1
LEDINUSE1 LEDINUSE2
NC NC NC
NCNC
NC
GND
TX MUTE
DATA IN
SQ IN
PLL CLK
PLL DATA
PLL LE
DATA OUT
DATA IN
TX B
NC
NC
NC
O
G
I
TALK
BATT OFF
CHG OUTRX MUTE
FLASH100
FLASH270
TONE
BELL IN
PAGE
GND
X0A
X1A
MOD1
RESET
05
R97
10
1.9
3.2
3.2 3.22.7 2.6 3.2 2.8 2.8 2.8
3.1 0.5 0.7 0.7
0.8
0
1.9
1.6 1.6 1.9 1.9 1.9
4.4
1.5
0.9
1.7 1.6
1.61.61.61.61.61.63.2 1.7 0.600
0.7
1
0.7 0
3.2
2.4
3.2
1.5
1.1
0
0
0
0.5
2.1
2.1 2.3
2.3
3.2
3.2
3.2
3.2 1.5 1.2
0 0
0.1
0
0
00
0
0
3.2
3.2
3.2
3.9
6.16.1
6.8
9
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+ B+ B+
B+
B+
B+
B+
B+
B+
6.1
0
0
0
0
1.6
3.1
3.2
0.7
3.2
3.2
0.2
0.7
3.2
3.2
3.2
3.2
3.2
2.7
2
1
5-7. SCHEMATIC DIAGRAM – BASE MAIN Section – • See page 24 for Waveforms. •See page 28 for IC Block Diagrams.
(Page 21)
(Page 21)
(Page 21)

2525
SPP-904
5-9. SCHEMATIC DIAGRAM – HAND RF Section – • See page 28 for IC Block Diagram.
0.8
0.8
0.8
1.7
1.7 31.9
1.9
2.6
1.2
2.4 33003
1.7 1.8 2.9 2.7
2.2
2.9
3
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
0.9
2.7
1.1
2
2.4
3
1
25
4
B.P.F.
6
ANT
GND
HAND MAIN
4
HAND RF BOARD
BOARD
VCC
LE
DATA
CLK
MOD
GND
GND
LO
IF
TX
HAND MAIN
5
BOARD
HAND MAIN
6
BOARD
MIX
MIX GND
05
TX OUT
TX VCC
TXB
TXE
TX GND2
PD1
VCC
XIN
XOUT
XBO
GND
RX VCC
RXB
RXE
RX GND
PD2
RST
SI
CPS
LOCK
MIX OUT
IN
24 23 22 21 20 19 18 17 16 15 14 13
12345678910 11 12
TP503
TP504
TP505
TP506
TP512
TP511
TP510
TP509
TP508
TP507
C582
C598
C578
C579
C580
C581
C583
R597
R598
R599
C533
R506
L504
4.7µH
C514
C512
R531
R530
R516
C597
R539
R540
R532
C539
R528
C538
R507
C537
C536
C534
C535
C511
C544
C540
C548
R533
R527
R521
R519
C550
R520
C557
C558
C553
R559
C567
C551
L509
C546
R517
C543
C545
R544
C527
R529 C523 L506
C524
C509
R561
Q512
R503 R522
C520
C526
C521
C525
C590
C519
C505
C508
R548
C563
Q507
C542
R541
R553
C570
C586
C560
C510
RT501
C564
C565
R552
C571
C572
C568
R554
C574
C573
Q506
C507
L507
C506
FT501
R542
R504
C501
C503
L510
L503
TP502
C502
C575
L502
C504
C576
R551
C569
C541 R526
C547
R502
C549
C562
L551
L552
L550
Q501
L501
22µH
L555
L556 L557
L553
L554
D502
TP501 R505 R509
TP
D503
IC502
IC502
TP
Q502
C566
100p
100p
33p
100p
100p
100p
100p
1k
1k
1k
33p
1k
0.01
0.01
27
10
0
100p
330k
4.7k
1k
0.22
35V
4.7k
0.0022
3.3k
0.0047
0.0033
5p
3p
27p
0.01
33p
0.01
1.2k
1k
10k
0
15p
100k
6.8
10V
0.01
0.01
1.5k
0.01
100p
33nH
15p
390
82p
15p
33
3p
390 5p 12nH
5p
5p
33k
2SC5065-Y
6.8 100
0.001
0.01
33p
33p
0.01
33p
7p
2p
0
7p
2SC5065-Y
TX AMP
TX AMP
3p
1k
39k
5p
0.01
10
6.3V
33p
4.7K
0.1
TX POWER
33p
10
0.01
100p
4p
18k
2p
6p
2SC5065-Y
33p
6.8nH
0.5p 150
220
3p
3p
27nH
15nH
12p
3p
6.8nH
33p
4p
100
33p
4p 10k
6p
47k
7p
1p
2SC4095-R47
RF AMP
1SV270
10k 10k
(RX VCO)
1SV314
M64884FP-C60J
(TX VCO)
2SA812(M)-M6A
TX B+
SWITCH
0.001
1st MIXER, VCO,
PLL SYNTHESIZER
(Page 27)
(Page 27)
(Page 27)

2727
SPP-904
1.9
3
33
2.5 2.7 32.6 2.6 2.6
2.9 0.9 0.7 0.7
0.8
0.2
1.7
0.6 1.6 1.7 1.71.7000
03 000000000
0
0
0
3.6 3.6
1.9
0.4
0
0
0
3.6
B+
1
1
0.7
3
2.2
3.2
3.2 0.2
0
3.2
3.6
3.2
3.2
0
000003
3
0
0.6
3.2
3.2
3.6
3.6
1.6 2.9 0.2 0.8
0.2
000
1.2
1.5
3.2
0
0
3
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
3.63.6
3.6 3.6
3.6
3.5
2.8
0
3.2
3.2
3.6
0
1.3
3
B+
1
2
3.6
MIX
IN
OSC1 OSC2 MIX OUT VCC
VREF
VOUT VIN
CONTGND
1
4 GHI
7 PQRS
TONE
2 ABC
5 JKL
8 TUV
0 OPER
3 DEF
6 MNO
9 WXYZ
TALK
FLASH
OFF
CHANNEL
PGM
SPEED DIAL
REDIAL
#
LIMIT IN DEC2 DEC1 QUAD COIL AF
OUT
FL
IN
FL
OUT
SQ
IN
SCAN
CONT
GND
MUTE
321
123
54
VDET2
VDET1 VSS
VIN2
VIN1
45
321
65874
141516 1112 91013
05
+
–
HAND RF
BOARD
IF
GND
LO
GND
TX
MOD
ANT
GND
VCC
LE
DATA
CLK
6
HAND RF
BOARD
CHARGE
TERMINAL
RECHARGEABLE
BATTERY PACK
VOL
HML
(BP-T23)
DC3.6V 600mA
HAND RF
BOARD
4
5
13 14 15 16 17 18 19 20 21 22 23 24
121110987654321
VCC
LPF1
IN
LPF1
OUT
EXP
IN
EXP
VREC
INT
OUT
TEL
OUT
V HOLD
INT
CONT
CHG
CONT
FSK
OUT
STBY
GND
EXP MUTE CONT CMP MUTE CONT TX DATA IN CMP NF PRE IN PRE NF CMP V REC CMP OUT LPF2 IN LPF2 OUT VREF
1
24 23 22 21 20 19 18 17 16 15 14 13
37 38 39 40 41 42 43 44 45 46 47 48
23456
789
10
11
12
363534333231302928272625
DTMF
MOD0
X0
X1
VCC
NC
TX MUTE
RX MUTE
NC
GND
TX B
SQ IN
DATA IN
RING VOL
RING OUT
CONV
PLL CLK
PLL DATA
DATA OUT
DATA EN
PLL EN
NC ROW4 ROW3 ROW2
CHG IN
BATT OFF
BATT LOW
COL1
COL2
COL3
COL4
COL5
ROW1
WAKEUP
STPCNT
SC NC TALK LED TALK LED PAGE NC GND
X0A
X1A
MOD1
RESET
1
1
2
2
3
3
4
5
BPF
BPF
HAND MAIN BOARD
C435
D431
D432
C451
R482
R439
Q406
Q405
Q405, 406
AF AMP
R419 R420
C449
R481
R437
R438
C457
C456
C450
R434
R436
R455
R435
C447
C446
Q404
R453 R484
C445
R433
R457
Q408
D402
Y401
MC401
R454
R456
R478 R416
C437
R427
C414
C416
R414
R417
C418 C417
C419
R418 C448
C410
R412
R411
C409
RT402
C408
R408
C406
C407
RT401
RT401
SQ SENSITIVITY
RT402
SPEAKER OUT
LEVEL
L402
DICRI
VOLTAGE
2nd MIXER,
LIMITER AMP, DET,
AF AMP, SQUELCH CONTROL
R409
R407
C404
C403
R406 C405
C401
C402
R405
D401
R403
R402
R404
C424
C423
R401
C421
X401
FT401
C422
C425 CT401
CT401
TX FREQUENCY
C427
C426 C428
R477 C430
R483
IC401
FT402
C432 C434
R421
C433
C431
L402
R423
IC403
R440
C454 R441
RT403
RT403
MODULATION
SENSITIVITY
C453
C452
L403
C458
R460
R458
R459
R461 R462 R463
R442
R443
X402
C459 C460
R465
C461
R464
C462 C464
C463
C466
R467
R470
R468
Q410
Q410
CHARGE
DETECT
D405
D406
C465 C467 C468
R469
C469
C470
+3V REGULATOR
IC405
IC405
R475
R474
C471
R471
R466
C473
C472
R472
D408
R473
D421
D421-424
(KEY BACK LIGHT)
D422
D423
D424
C474
R476
R448
R449 R451
Q403
R422 R428
R430
R450
C440
R429
C455
R452
C491
R490
C442
R431
C441
R480
C439
C438
R432
C443
C444
IC404
SYSTEM
CONTROLER
IC404
S401
TP
L401
3.9µH
D407
D408
TALK/
BATT LOW
BP
TP
TP
TP
S901
S902
S903
S904 S905 S906
S908 S909
S910 S911 S912
S913 S914 S915
S916
S917
S918
S907
SP801
Q409
Q412
R492
R493
R494
R495
IC406
IC406
Q411
ANT2
Q401 R410 Q402
R491
Q421
R445
R444
D403
D404
0.1
HZK6C
HZK6C
4.7
25V
15k
15k
2SC1623-L6
2SC1623-L6
220 220
0.047
15k
47
2.2k
0.0047
10
16V
0.047
470k
15k
1k
18k
0.22
0.01
2SC1623-L6
Q404
MIC AMP
820 2.2M
0.47
6.8k
82
2SD1048-X7
RLS4148
2.2k
2.2k
022k
0.01
3.3k
0.1
0.1
15k
100k
0.1 0.47
0.0056
22k 0.0039
0.01
2.2k
270
0.1
100K
0.0033
3.3k
33p
330p
220K
10k
470k
220p
0.1
2.2k 220p
33p
1
18k
RLS4148
680
0
470
0.01
0.001
220k
47p
10.1MHz
39p
3p 10p 12p
0.01 100p
4.7k 100p
2.2k
MC3361CDR2
4.7
6.3V 0.01
10k
0.047
0.047
4.7k
LA8633V
18k
0.1 56k
22K 0.001
3p
5.6nH
1.5p
2.2k
4.7k
4.7k
10k 10k 3.3k
82k
100k
3.579545MHz
33p 33p
1k
100
6.3V
22
0.01 1
0.01
0.0033
33k
15k
33k
2SC1623-L6
RLS4148
RLS4148
0.0033 100
6.3V 0.01
47k
10
6.3V
0.022
TK11130SC
100k
560k
0.01
100k
1k
0.1
0.01
470
SML-310VT
1k
SML-310MT
SML-310MT
SML-310MT
SML-310MT
10
6.3V
150k
1k
1k 100k
2SA812(M)-M6A
B+ SWITCH
(FOR TX SYSTEM)
1k 1k
1k
1k
0.15
100k
0.0047
4.7k
0.022
820
0.01
2.2k
0.1
100k
4.7
6.3V
4.7
6.3V
2.2k
0.47
4.7
6.3V
MB89174LPF-G
-257-BND
(DISCRI)
HSM88WA
(ANT)
(GND)
(ANT)
(MOD)
2SD1048-X7
RINGER VOLUME
SWITCH RINGER
DRIVE
2SC1623-L6
STANDBY
SWITCH
330
330
330
330
XC612N3328MR
BATTERY VOLTAGE
DETECT
2SC1623-L6
RESET
SIGNAL
GENERATOR
2SC2714-Y
IF AMP 470k
IC401
EXPANDER,
COMPRESSOR,
LIMITER
IC403
2SC1623-L6
PREAMP
1k
2SA812(M)-M6A
LED DRIVE
27k
100k
HZ6CT2
HZ6CT2
1
2
3
4
5
6
7
8
9
1
6
2
3
4
5
7
8
9
5-11. SCHEMATIC DIAGRAM – HAND MAIN Section – • See page 24 for Waveforms. •See page 28 for IC Block Diagrams.
(Page 25)
(Page 25)
(Page 25)

2828
SPP-904
• IC Block Diagrams
IC1 LA8633VU-TLM (BASE MAIN Board)
IC403 LA8633VU-TLM (HAND MAIN Board)
IC3 MC3361CDR2 (BASE MAIN Board)
IC401 MC3361CDR2 (HAND MAIN Board)
IC302 M64884FP-C60J (BASE RF Board)
IC502 M64884FP-C60J (HAND RF Board)
IC405 TK11130SCL (HAND MAIN Board) IC406 XC612N3328MR (HAND MAIN Board)
1 2 3 4 7 8 9 10 11 12
VCA
VB
VCA
65
DATA
SHAPE DRIVE
REGULATOR
15 14
VB
2324
MUTE IDC
VB
2122 20 19 18
VB
17 16 13
PREAMP
SUM AMP
SUM AMP
LPF1 IN
LPF1 OUT
EXP IN
EXT V REC
INT OUT
TEL OUT
V HOLD
INTC CONT
CHARG CONT
FSK OUT
GND
ST BY
VCC VREF TX DATA IN EXP MUTE CONT CMP MUTE CONT LPF2 OUT LPF2 IN CMP OUT CMP V REC CMP NF PRE NF PRE IN
PROGRAMMABLE
DEVIDER
LATCH
PROGRAMMABLE
DEVIDER
LATCH
PROGRAMMABLE
DEVIDER
LATCH
1/2
1/16, 1/17
PRESCALER
1/32, 1/33
PRESCALER
VCO (TX) OSC &
1/2 DEVIDER
1 2 3 4 5 6 7 8 9 10 11 12
PHASE
DETECTOR
LATCH
SELECT
SHIFT
REGISTOR
PULSE
COUNTER
17 16 15
PHASE
DETECTOR
MIX
VCO (RX)
21 20 19 18 24 23 22
LOCK
DETECTOR
14 13
TX GND1
TX OUT
TX VCC
TXB
TXE
TX GND2
PD1 VCC
XIN
XOUT
XBO
GND
MIX OUT LOCK CPS SI RST PD2 RX GND RXE RXB RX VCC MIX GND MIX IN
MIXER
OUTPUT
LIMITER
INPUT
23
VCC
45
DECOUPLING
6
QUAD
COIL
78
CRYSTAL
OSC
1
MUTE
SQUELCH
IN
15 14
SCAN
CONTROL
GND
FILTER
INPUT
13 12
FILTER
OUTPUT
11
RECOVERED
AUDIO
10 9
MIXER
INPUT
16
SQUELCH TRIGGER WITH
HYSTERESIS
MIXER
OSCILLATOR
FILTER
AMP
AF
AMP
LIMITER
AMP
DEMODULATOR
+
+
+
_
REGULATOR
COMP.COMP.
THERMAL
SENSOR
VOLTAGE
CONTROL
BANDGAP
REFERENCE
VIN VOUT
CONT
VREF
GND
5 4
13 2
COMP.
COMP.
REFERENCE
VOLTAGE
VDET2 VIN2
VDET1
VSS
VIN1
5 4
1 32