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7-6. IC PIN FUNCTIONS
• IC701 M38513M4-C59FP SYSTEM CONTROL (MAIN BOARD)
Pin No.
Pin Name
1
VCC
2
VREF
3
AVSS
4
NC
5
NC
6
P.DOWN
7
DOLBY
8
AMS IN
9
NC
10
NC
11
NC
12
NC
13
I2C-CLK
14
I2C-DATA
15
CNVSS
16
BIAS
17
+MTR
18
RESET
19
XIN
20
XOUT
TE
L 13942296513
21
VSS
22
SYNC REC LED
23
REC LED
24
PAUSE LED
25
FWD LED
26
REV LED
27
TC-RELAY
28
PLAY SW
29
+SOL
30
REC/PB/PASS
31
REC MUTE
32
TC-MUTE
33
ALC
34
LOAD IN SW
35
LOAD OUT SW
36
LOAD IN
37
LOAD OUT
38
PACK
39
B-HALF
40
SENSOR OUT
41
KEY1
42
KEY0
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I/O
—
Power supply.(+5V)
—
Analog Reference Voltage.
—
Ground.
—
Not used.
—
Not used.
I
POWER DOWN signal control signal input. H: Normal L: STANDBY mode
O
DOLBY B NR control signal output. H: ON L: OFF
I
AMS search signal input.
—
Not used.
—
Not used.
—
Not used.
—
Not used.
I/O
IIC bus clock input/output.
I/O
IIC bus data input/output.
—
Connected to ground.
O
REC bias control signal output. H: ON L: OFF
O
Capstan Motor control. H: ON L: OFF
I
Reset signal input. L: RESET
I
Ceramic oscillator input.(8MHz)
O
Ceramic oscillator output.(8MHz)
—
Ground.
O
CD SYNC LED control signal output. H: OFF L: ON
O
REC LED control signal output. H: OFF L: ON
O
PAUSE LED control signal output. H: OFF L: ON
O
FWD LED control signal output. H: OFF L: ON
O
REV LED control signal output. H: OFF L: ON
O
Head REC/PB select signal output. H: REC L: PB
I
MC PLAY switch signal input.
O
MC mode exchange solenoid control signal output.
I/O
REC/PB/PASS select . H: REC PASS L: REC mode 1/2Vcc: PB MODE
O
REC MUTE control. H: ON L: OFF
O
TC LINE MUTE control signal output. H: ON L: OFF
O
Automatic level control signal output. H: OFF L: ON
I
Detection input from the tray open/close switch. H: LOAD IN
I
Detection input from the tray open/close switch. L: LOAD OUT
O
Tray loading motor LOAD IN signal output. H: ON L: OFF
O
Tray loading motor LOAD OUT signal output. H: ON L:OFF
I
Detection input from the cassette half switch. H: HALF OFF L: HALF ON (H:without a half L: within a half)
I
REC proof detect signal input.
I
Reel senser signal input.
I
Key input.
I
Key input.
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Function
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3
6 7
1 3
1 5
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9 4
2 8
0 5
8
2 9
9 4
2 8
m
9 9
9 9
19
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