– 44 –
IC DESCRIPTION (FX-NH2000)
IC, M38503M4-094FP T4
1
VCC
–
IC power supply.
2
V-REF
–
Connected to VCC.
3
AVSS
–
Connected to GND.
4
NC
–
Not connected.
5
I-AUTO-1
I
Input of DECK 1 reel platform pulse.
6
I-AUTO-2
I
Input of DECK 2 reel platform pulse.
7
O-PB-SEL
O
Three-state output.
8
O-REC-SEL
9
NC
–
Not connected.
10
O-NR
O
When NR is ON: “L”.
11
O-BIAS
O
BIAS control.
12
O-LMT
O
Output LINE MUTE. When MUTE: “H”.
13
O-COUNTER
O
Output tape counter data.
14
SERIAL I/O
I/O
Serial I/O terminal.
15
CN VSS
–
Connected to GND.
16
O-BIAS BEAT
O
For bias beat changeover. When in operation: “H”. Initial: “L”. (Not used)
17
O-C SHIFT
O
While clock shift: “L” .
18
RESET
I
RESET signal input pin.
19
XIN
I
Crystal oscillation pin.
20
XOUT
O
Crystal oscillation pin.
21
VSS
–
Connected to GND.
When Power is ON: “L” under STOP status. When FWD operates: flashing ( “L”
↔
“H” repeated). While FF: fast flashing.
When Power is ON: “L” under STOP status. When RVS operates: flashing ( “L”
↔
“H” repeated). While REW: fast flashing.
24
D-PAUSE
O
When Power is ON: “L” under STOP status. While PAUSE: flashing ( “L”
↔
“H” repeated).
25
D-REC
O
While REC, DUBBING: “L”. While REC, MUTE: flashing.
When NR is ON: “L”. (Not used)
When MOTOR is in operation or power on (500msec): “H”.
When DECK 2 solenoid is in operation: “H”.
When DECK 1 solenoid is in operation: “H”.
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”.
33
I-CAM-2
I
DECK 2 cam. When switch is ON: “L”.
34
O-HSP
O
Output high speed signal. High speed: “L”.
35
I-CAM-1
I
DECK 1 mechanism cam. When switch is ON: “L”.
36
I-CST-1
I
DECK 1 cassette detection. When cassette exists:“L”.
37
I-RE-A
I
DECK 2 side A REC enable. When recordable: “L”
Description
Pin No.
Pin Name
I/O
DECK 2 REC
DECK 2 PB
DECK 1 PB
O-PB-SEL
TAPE
REC IN
REC MUTE
O-REC-SEL
L
H
H1-Z
22
D-FWD
O
23
D-REV
O
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