Read Sony ICD-70 Service Manual online
SECTION 3
DIAGRAMS
3-1.
IC PIN FUNCTION
•
IC701 MN102LP25Z3V
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
I/O
O
O
O
O
O
I
I
I
I
I
O
O
O
O
O
I
O
I
I
O
I
I
O
I
O
O
O
O
O
O
O
O
I
O
O
O
I
I
I
I
I
I
O
O
O
O
I
O
I
Description
“Speaker amplifier, mute control.”
PDN (Power Down) output to IC101.
RES (Reset) output to IC101.
“Microphone sensitivity selection output (0: Low, 1: High).”
CE (Chip Enable) output to IC702.
R/B (Ready/Busy) input from IC702.
ERASE switch input detection.
HOLD switch input detection.
“Input audio present/absent detect signal input from IC104. (0: Sound is present, 1: No sound).”
Backup power supply voltage detection input from IC503.
IC101 analog signal output mute control.
B+ power supply control output.
Backup power supply connection (charge) control.
IC501 regulator control (ON/OFF) output.
IC504 DC/DC converter ON/OFF control output.
Power supply (+).
System clock output.
GND.
Subsystem clock (32 kHz).
Subsystem clock (32 kHz).
Power supply (+).
Main system clock (10 MHz).
Main system clock (10 MHz).
“Single chip mode setting terminal (Fixed to “1” always).
OPR LED (red) driving terminal (REC).
OPR LED (green) driving terminal (PLAY).
Not used. Fixed to Low output.
Not used. Fixed to Low output.
LCD back-light control.
Wav Link ACK output.
Wav Link OPT output.
Wav Link WLOK output.
Power supply (+).
Not used. Fixed to Low output.
Not used. Fixed to Low output.
Not used. Fixed to Low output.
“Wav Link WLINK input. (Low: during link, High: no connection).”
Wav Link COM0 input.
Wav Link COM1 input.
Wav Link COM2 input.
Wav Link COM3 input.
GND.
DAT output to IC106.
CLK output to IC106.
LE output to IC106.
Not used. Fixed to Low output.
Test mode signal input.
Not used. Fixed to Low output.
Wav Link C/D input. (Command/Data identification).
Pin Name
PO_PMUT
—
POA_PDN
POA_RES
PO_MIC
POR_CE
PIR_PB
PI_ERS
PI_HOLD
PI_VOR
PI_DET3
PO_MUTE
PO_BOT
PO_BACK
PO_REGU
PO_DDC
VDD
SYSCLK
VSS
XI
XO
VDD
OSCI
OSCO
MODE
POL_REC
POL_PLY
—
—
PO_LIGH
PO_ACK
PO_OPT
PO_WLOK
VDD
—
—
—
PI_WLNK
PI_COM0
PI_COM1
PI_COM2
PI_COM3
VSS
POS_DAT
POS_CLK
POS_LE
PI_CHKO
PI_TEST
—
PI_C_D
— 6 —
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