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5-1. IC PIN DESCRIPTION
• IC701 TC9327F-113 (SYSTEM CONTROL/LCD DRIVE)
Pin No.
Pin Name
I/O
Pin Description
1 – 4
COM1 – 4
O
LCD driver common output
5 – 22
S1 – 18
O
LCD driver output
23
MOTOR DIR
O
Motor rotation direction control output (FWD: L, REV: H)
24
MOTOR CTL
O
Motor ON/OFF control output (OFF: L, ON: H)
25
MOTOR SPEED
O
Motor speed control output (Normally: L, Speed down: H)
26
MOTOR BRK
O
Motor brake control output (Brake OFF: L, Brake ON: H)
27
PHOTO CTL
O
Photo reflector rotation detection control output
28
DOLBY
O
DOLBY control output (ON: L, OFF: H)
29
FWD/REV
O
Playback head input select output (REV: L, FWD: H)
30
AVLS
O
AVLS control output (AVLS OFF: L, AVLS IN: H)
31
FM MODE
O
LOCAL/DX control output (DX: L, LOCAL: H) (US, CND, 5E, 6E only)
32
TAPE SELECT
O
Tape select control output (Normal: L, CrO
2
/METAL: H)
33
PHOTO IN
I
Photo reflector rotation detection input
34 – 37
K0 – 3
I
Key input 0 – 3
38 – 41
KO0 – 3
O
Key output 0 – 3
42
BATT DET
I
Power supply voltage detection input (A/D input)
43
HOLD
I
HOLD input
44
AD IN3
I
Not used in this set.
45
AD REF
I
Reference voltage of pin 43 and 44.
46
AMP CTL
O
AMP control output (AMP OFF: L, AMP ON: H)
47
MEGA BASS
O
MEGA BASS control output (ON: L, OFF: H)
48
OPEN
I
OPEN detection input (Open: L, Close: H)
49
BEEP
O
BEEP output
50
VER1
I
Destination select input (Fixed at “L” (except EE, E, 9E) or “H” (EE, E, 9E) in this set.)
51
VER2
I
Destination select input (Fixed at “L” (US, CND, E, 5E, 6E, 9E) or
“H” (AEP, FR, EE, CEV, CH) in this set.)
52
VER3
I
Destination select input (Fixed at “L” in this set.)
53
MBSET
I
MEGA BASS with/without detection input (Fixed at “L” in this set.)
54
DLBSET
I
DOLBY with/without detection input (Fixed at “L” (WM-FX477) or
“H” (WM-FX479) in this set.)
55
REV SW
I
Mechanism deck mode detection switch input (REV ON: H)
56
REW SW
I
Mechanism deck mode detection switch input (REW ON: H)
57
FF SW
I
Mechanism deck mode detection switch input (FF ON: H)
58
FWD SW
I
Mechanism deck mode detection switch input (FWD ON: H)
59
BAND
O
BAND select output (AM: L, FM: input)
60
RADIO ON
O
RADIO ON/OFF control output (OFF: L, ON: H)
61
IF REQ
O
IF request output (Auto scan: L, Normally: H)
62
MUTE
O
Mute signal output (OFF: L, ON: H)
63
NC
—
Not used.
64
IF IN
I
IF input
65
EO
O
Not used in this set.
66
NC
O
Error out signal output
67
HOLD
—
Fixed at “H” in this set.
68
NC
—
Not used.
69
GND
—
Ground
70
VCO FM
I
VCO (FM) input
71
VCO AM
I
VCO (AM) input
72
VDD
—
Power supply pin
73
RESET
—
Reset input
74
XOUT
—
Crystal oscillator output (75 kHz)
75
XIN
—
Crystal oscillator input (75 kHz)
SECTION 5
DIAGRAMS
Содержание Walkman WM-FX477
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