Meaning Each Terminal Of Cpu (Lm6402 H063) - Akai GX-F31 Service Manual

2. MEANING EACH TERMINAL OF CPU (LM6402 H063)
I
PIN NO. SYMBOL
I XTAL
2*
co
3
Cl
4 C2
5 C3
6 INT
7
8
9
IO
11
12*
13*
14*
15*
16*
17*
18*
19
20
21
22
23
24
25
26*
27
28
29
30
31
32
33*
34*
35*
36*
37*
38*
39*
40*
41
42
RES
DO
DI
D2
D3
EO
El
E2
E3
FO
Fl
F2
F3
GND
GND
GO
GI
G2
G3
HO
HI
H2
H3
IO
II
12
AO
Al
A2
A3
BO
Bl
B2
83
Vee
EXTAL
I
Input of crystal oscillator
Input port selection storobe
MEANING
Colon, MIN/SEC is lit, turned on when level is "H".
Between musics signal input. "H" while between musics.
Tape pulse input
Terminal for interruption. Power supply frequency input.
Reset terminal. When power is on, reset when it is "L".
Mecha stop terminal. Stops when it is "L".
BIAS OSC control terminal. Stop when it is "H".
REC MUTE terminal. MUTE when it is "H".
PB MUTE terminal. MUTE when it is "H".
Segment LED Drive a ,
Segment LED Drive b
Segment LED Drive c
Segment LED Drive d
Segment LED Drive e
Segment LED Drive f
Those synchronized with BO~ B3 are turned on lamp.
Segment LED Drive g
Strobe signal for driving function indication LED.
Synchronized LED is lit. Refer to BO~ B3.
Connect to ground
Connect to ground
Cam motor drive terminal. When played
➔
"H"
Cam motor drive terminal. When stopped
➔
"H"
Cam motor drive terminal. When searching
➔
"H" (when CUE)
Cam motor drive terminal. When FAST
➔
"H" (when FF, REW)
REEL M. reverse tum terminal. When REW ➔ "H" . Prevents tape slackening.
REEL M. normal tum terminal. When FF, PLAY
➔ "H".
When PLAY
➔
"H". When REC
➔
"L" .
No connection
Cam motor drive terminal. When EJECT
➔
"H" .
AUTO FADE lN.
➔
"L" active
AUTO FADE OUT.
➔
"L" active
} Data
input
}
Data selection strobe signal output.
4 digits drive
+SY
Input of crystal oscillator
REC LED Drive
PLAY LED Drive
REW LED Drive
FF LED Drive
*
Please refer to Fig. of this terminals.
1-6