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IC DESCRIPTION (FX-NH2000)
IC, M38503M4-094FP T4
Pin No.
Pin Name
1
VCC
2
V-REF
3
AVSS
4
NC
5
I-AUTO-1
6
I-AUTO-2
7
O-PB-SEL
8
O-REC-SEL
9
NC
10
O-NR
11
O-BIAS
12
O-LMT
13
O-COUNTER
14
SERIAL I/O
15
CN VSS
16
O-BIAS BEAT
17
O-C SHIFT
18
RESET
19
XIN
20
XOUT
21
VSS
22
D-FWD
23
D-REV
24
D-PAUSE
25
D-REC
26
D-NR
27
O-MOTOR
28
O-SOL2
29
O-SOL1
30
O-POWER
31
I-CST-2
32
I-RE-B
33
I-CAM-2
34
O-HSP
35
I-CAM-1
36
I-CST-1
37
I-RE-A
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I/O
–
IC power supply.
–
Connected to VCC.
–
Connected to GND.
–
Not connected.
I
Input of DECK 1 reel platform pulse.
I
Input of DECK 2 reel platform pulse.
O
Three-state output.
–
Not connected.
O
When NR is ON: "L".
O
BIAS control.
O
Output LINE MUTE. When MUTE: "H".
O
Output tape counter data.
I/O
Serial I/O terminal.
–
Connected to GND.
O
For bias beat changeover. When in operation: "H". Initial: "L". (Not used)
O
While clock shift: "L" .
I
RESET signal input pin.
I
Crystal oscillation pin.
O
Crystal oscillation pin.
–
Connected to GND.
When Power is ON: "L" under STOP status. When FWD operates: flashing ( "L" ↔
O
"H" repeated). While FF: fast flashing.
When Power is ON: "L" under STOP status. When RVS operates: flashing ( "L" ↔
O
"H" repeated). While REW: fast flashing.
When Power is ON: "L" under STOP status. While PAUSE: flashing ( "L" ↔ "H" repeated).
O
O
While REC, DUBBING: "L". While REC, MUTE: flashing.
O
When NR is ON: "L". (Not used)
O
When MOTOR is in operation or power on (500msec): "H".
O
When DECK 2 solenoid is in operation: "H".
O
When DECK 1 solenoid is in operation: "H".
O
When POWER of MX-NH2000 is ON: "H" .
I
DECK 2 cassette detection. When cassette exists: "L".
I
DECK 2 side B REC enable. When recordable: "L".
I
DECK 2 cam. When switch is ON: "L".
O
Output high speed signal. High speed: "L".
I
DECK 1 mechanism cam. When switch is ON: "L".
I
DECK 1 cassette detection. When cassette exists:"L".
I
DECK 2 side A REC enable. When recordable: "L"
– 42 –
Description
O-PB-SEL
O-REC-SEL
DECK 2 REC
L
TAPE
H
REC IN
DECK 2 PB
DECK 1 PB
H1-Z
REC MUTE
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