1-30 (No.49845)
4.9 UPD178078GF-618 (IC701) : System CPU
• Pin layout
• Pin functions
1
30
80
51
81
100
50
31
Pin No.
Symbol
I/O
Function
1
PS1(on)
I
ACC ON/OFF detection signal input
2
PS2(stop)
I
Memory ON/OFF detection signal input
3
POWER
O
POWER ON/OFF control output
4
STAND BY
I
Stand-by position detection signal input
5
TAPE IN
I
Cassette tape inside signal
6
NC
-
Not connect
7
J-BUS I/O
O
J-BUS I/O selection output
8
J-BUS IN
I
J-BUS data input
9
J-BUS OUT
O
J-BUS data output
10
J-BUS SCK
I/O
J-BUS clock output/input
11
NC
-
Not connect
12
I2C DA
I/O
E.VOL I2C data input/output
13
I2CSCK
O
E.VOL I2C clock
14
MODE
I
Mecha position detection signal
15
SUBMO+
O
Sub motor control. Loading direction
16
SUBMO-
O
Sub motor control. Eject direction
17
REEL
I
Reel pulse signal input
18
MS IN
I
MS signal input
19
DOLBY
O
Dolby ON/OFF control
20
HEAD SEL(F/R)
O
Audio signal selector for head amp
21
FF/REW
O
Audio level control for MS
22
MOTOR
O
Main motor control
23
LEVEL
I
Level meter input
I
S.METER input
I
SQ level input
I
Connect to GND
-
Power supply
-
Connect to GND
I
A/D key input 0
I
A/D key input 1
I
A/D key input 2
I
Ground
33
REGCPU
-
Connect to GND path through 0.1uF
34
VDD
-
Power supply
35
REGOSC
-
Connect to VDD
36
X2
-
X'tal
37
X1
I
X'tal
38
GND0
-
Ground
39
SEEK/STOP
O
Auto seek/receiving control output
40
GND2
-
Ground
41
NC
-
Pull down to GND
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