N901 87CM38N-3D27
Reference Voltage(V)
Reference Resistance
Pin Function
Without
signal
With
signal
Forward(
Ω
) Backward(
Ω
)
1
Power supply grounding
0
0
0
0
2
Tuning voltage output
4.4
4.4
700
8000
3 Vacant
pin
5.2
5.2
700
8000
4
Mute
5.2
0 700 8000
5
External
mute
5.2
0 700 8000
6
Vacant
pin
0 0 700 8000
7
Standby power supply
2.0
2.0
700
8000
8 Vacant
pin
1~4.2
1~4.2
700
8000
9 Band
1
4.8
4.8
700
3500
10
Band
2
0 0 700 3000
11
Clock bus control
5.0
5.0
700
15000
12
Digit bus control
5.0
5.0
600
15000
13 AFC
input
2.0
2.0
700
3000
14 Karaoke
switch
0
0
600
10000
15
Keyboard matrix input
4.4
4.4
700
10000
16
Keyboard matrix input
4.4
4.4
680
10000
17 Vacant
pin
1.0
0
700
10000
18 Vacant
pin
1.0
0
700
10000
19 Vacant
pin
0
0
620
10000
20 Vacant
pin
0
0
620
10000
21 Grounding
0
0
0
0
22 Red primary color character
output
0 0 620 2200
23 Green primary color
character output
0 0 620 2200
24
Blue primary color character
output
0 0 620 2200
25
Character
blanking
0 0 620 2200
26 Line
flyback
4.0
4.0
680
10000
27 Field
flyback
4.8
4.8
680
10000
28 Character
oscillating
5.0
5.0
600
10000
29 Character
oscillating
3.0
0
10000
30 Grounding
0
0
0
31 CPU
clock
0.4
700
10000
32 CPU
clock
2.0
700
10000
33 CPU
reset
0
650
40000