Sony TAM-100 Service Manual page 3

• IC Block Diagrams
U1 TC88512AF-043
94 93 92
100 95
1
.
2
WE/PF0
3
4
CAS1/PF2
5
PC (3:0)
8
RAS/PF3 9
OE/PF1 10
MCE 11
A 16 12
A15-12/PI(3:0) 13
DVSS1-4 14
XIN 15
XOUT 16
CLOCK
DVDD1-4 17 GENERATOR
+
18
PVSS
PLL
PLLI 19
PLLO 20
PVDD 21
U2 TC58A04F
NC
28 27 – 15
4M BIT
CHARGE PUMP/
MEMORY
CONTROL GATE
CELL ARRAY DRIVE
DATA LATCH
INTERFACE/
CONTROL LOGIC
8 – 14
1 2 3 4 5 6 7
91 90 89 87 86 85
84 83 82
1 1
D-A
CONVERTER
• VOICE COMPRESSION/DECOMPRESSION
• DTMF DETECTION
CLOCK COUNTER
• FULL DUPLEX HANDS FREE AND SO ON
MEMORY
INTERFACE
CPU RAM
CPU PROGRAM
ROM
ADDRESS DECODER
22 24 25 28 29 32 33 36
U80 NJM2113M-TE2
CHIP–DIS
1
50k
V REF 2
50k
+VIN 3
4
–VIN
NC
81 80 79 78 77 76 75 74
1
VRFF A-D
GENERATOR CONVERTER
DPS
8 BIT
DSP
CPU
INTERFACE
HOST
SERIAL
I/O
INTERFACE
CONTROL
MEMORY
SERIAL
INTERFACE
37, 38 39 40 41 42
BIAS
125k
#B
4k
4k
#A
– 6 –
73 AVDD1, 2
72 AVSS1, 2
71 WAIT
70 WR/PH0
69 RD/PH1
68 NM1
67 INT
66 DVDD1-4
65 DVSS1-4
64
.
PE (1:0)
63
62 MREQ/PH2
61 IORQ/PH3
60
PD (3:0)
57
56
PB (7:0)
49
48
PA (3:0)
45
44
.
PA (7:4)
43
8 V02
7 GND
6 V+
5 V01