Sony SPP-A973 - Cordless Telephone With Answering System, Service Manual

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+
8 7 6 5
4 3 2 1
_
+
_
VO2
CD
CF 2 CF 1
V in
GN
D
Vcc VO1
BIAS
CIRCUIT
1 8
2
3
4
INSTRUCTION
DECODER, CONTROL
LOGIC AND CLOCK
GENERATORS INSTRUCTION
REGISTER
ADDRESS
REGISTER
DECODER
IOF 1024
(or 2048)
DATA OUT
BUFFER
EEPROM ARRAY 16384 BIT
& (1024X16) or (2048X8)
READ WRITE AMPS
DATA IN/OUT RESISTER
16 (or 8) BITS
HIGH VOLTAGE
GENERATOR
AND
PROGRAM
TIMER
VCC
7 NC
6 ORG
5 VSS DO
DI
SK
CS
1 2 3 4 5 6 7 8
9 10 16 15 14 13 12 11
SHIFT REGISTER
LATCH
PARALLEL DATA
OUTPUT
GND
VCC
LATCH CLOCK PARALLEL DATA OUTPUT SERIAL DATA INPUT OUTPUT ENABLE SHIFT CLOCK SERIAL DATA OUTPUT RESET
QB QC QD QE QF QG QH
SQH
A
QA
32KBYTE OTP
VPP
EAN
PSEN 1
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65
2
3
MA0 4
MA1 5
MA2 6
MA3 7
MA4 8
MA5 9
MA6 10
MA7 11
VDD3V2 12
VSS3V1 13
P1.0/EX2
P1.1/EX3
P1.2/EX4
P1.3/EX5
P1.4/EX6
P1.5
P1.6/SCL
P1.7/SDA
14
ALE, RDN, WRN
PSEN
OTPRST, OTPTST, P4.3
MAIN
AND
AUX RAM
WATCHDOG
P1
ANALOG VOLTAGE
REFERENCE
AND SUPPLY
GENERAL
PURPOSE
A/D AND DA
POR
AND
WAKE-UP
CODEC2
(ANALOG)
CODEC2
(DIGITAL)
CODEC1
(DIGITAL)
CODEC1
(ANALOG)
MICROCONTROLLER
80C51
DCI
DMI
DSP
PLUS
ROM,
RAM
RSTANA
IDLE
WAKE-UP
DSPCLK
TICB
EVENTS
µ
C-CLK
15
16
17
18
19
20
21
VSS3V 22
SPKRP 23
SPKRM 24
I
2
C
31 32 34
ADDIN
ADTN
35
LIFPIN
36
LIFMIN2
37
LIFMIN1
40
VSSPLL
38
LIFMOUT
39
LIFPOUT
/DTMF
ADOUT
VDDA
DTMF
BLOCK
XTAL2 41
OSCILLATOR
AND
PLL
XTAL1 42
P3.0/MOUT0/D0 45
P3
P4
P3.1/MOUT1/DCK 46
P3.2/EXON 47
P3.3/EXIN 48
P3.4/T0 49
P3.5/T1 50
P3.6/MOUT2/FSC 51
P3.7/MIN/DI
52
P4.0/LE
56
P4.1/FSK
57
P4.2/FSD
58
P4.4/FSI
59
P4.5/GPC
60
P4.3 62
RCN 60
WRN 64
VSS3V2 61
IOM
MCB
P2 P0
MSK
MAIN BUS
P2.7 P2.6 P2.5 P2.4 P2.3 P2.2 P2.1 P2.0 P0.7 P0.6 P0.5 P0.4 P0.3 P0.2 P0.1 P0.0
25 26 27 28 29 30
MICP
MICM
VMIC VSSA
VGBP
VREF
33
VDDPLL 43
VDD3V3 44
VDD3V1 53
TST 54
RSTN 55
CLK
(DIGITAL)
(ANALOG)
• IC Block Diagrams
U2 PQ1R28
U1006, 4002 CAT93C86S-LE10 U4004 MC34119M
U1 SN74HC595ADBR (BASE KEY board)
– 45 – – 46 –
U1 PCD6002 (I-TAD board)
3
2
1
4
5
6
CONTROLLER
VIN
GND
VO
VC
GND
NR