JVC CH-X1000RF Service Manual page 30

Compact disc automatic changer
Table of Contents

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3.Pin function
PORT
Pin
I/O
No.
Name
1
LCDDA
O
LCD driver data output
2
LCDSCK
O
LCD driver clock output
3
LCDCE
O
LCD driver chip enable output
4
AVSS
-
Connect to ground
5
ADCOUT
O
Power on Hi output. Low in stop mode.
6
NC
O
Unused output port
7
AVREF1
-
Connect to 5V
8
NC
O
Unused output port
9
NC
O
Unused output port
10
CDCHECK
I
CD check mode input. Reset only.
11
EPROMDI
I/O
EEPROM data input
12
EOROMDO
O
EEPROM data output. Hi durring input.
13
EPROMCK
I/O
EEPROM clock input/output
14
LED
O
Lifter LED output
15
BUS I/O
O
JVC bus input/output control(Lo:input)
16
BUS SI
I
JVC bus data input
17
BUS SO
O
JVC bus data output
18
BUS SCK
I/O
JVC bus clock input/output
19
NC
O
Unused output port
20
NC
O
Unused output port
21
NC
O
Unused output port
22
NC
O
Unused output port
23
NC
O
Unused output port
24
NC
O
Unused output port
25
BUSOUT
O
JVC bus output
26
CD ON
O
CD power control Hi:on
27
PWR CONT
O
Power supply control output Hi:on
28
POSMO+
O
Position motor control output
29
POSMO-
O
Position motor control output
30
TRAYMO+
O
Tray motor control output
31
TRAYMO-
O
Tray motor control output
32
BUCK
O
CD LSI data clock
33
VSS1
-
Connect to ground
34
LSI RESET
O
CD LSI reset
35
CCE
O
CD LSI chip enable
36
BUS0
I/O
CD LSI data 0(open drain)
37
BUS1
I/O
CD LSI data 1 (open drain)
38
BUS2
I/O
CD LSI data 2 (open drain)
39
BUS3
I/O
CD LSI data 3 (open drain)
40
NC
O
Unused output port
                                                                                   1‑29
Function
Active
H
H
H
H
H
L
PORT
Pin
I/O
No.
Name
41
NC
O
Unused output port
42
NC
O
Unused output port
43
NC
O
Unused output port
44
MAG IN
-
Magazine switch Lo:magazine inserted
45
TRAY IN
O
Tray retract switch Lo:retraction complete
46
TRAY OUT
O
Tray extend switch Lo:extension complete
47
REST
I
Resr switch
48
NC
O
Unused output port
49
EMPH
O
Emphasis select output Hi:on
50
NC
O
Unused output port
51
BUFF CONT
O
Buffer control output
52
TEST RUN
I
Test running input
53
NC
O
Unused output port
54
NC
O
Unused output port
55
NC
O
Unused output port
56
MUTE
O
Mute output. When reverse of earlier audio
mute. Mute power OR output
57
STAGE
I
LCD,AD key,remote inhibit selector Low:inhidit
58
NC
O
Unused output port
59
EPROM CLF
I
EEPROM clear input Functional only dunng reset
60
RESET
I
Reset input (includes flash write in function)
61
REMOCON
I
Remote controller signal input
62
PWR DET
I
Memory power detect input
63
PWR SW
I
CRTL+B detect input
64
BUS INT
I
JVC bus com start interrupt input
65
EJECT
I
Eject key input
66
NC
I
Unused output port
67
VSS0
-
Connect to ground
68
VDD1
-
Connect to 5V
69
X2
O
Oscillater (4.19430 MHz)
70
X1
I
Oscillater (4.19430 MHz)
71
IC
-
Connect to ground
72
XT2
O
Open
73
XT1
I
Connect to VDD
74
VDD
-
Connect to 5V
75
AVREF0
-
Connect to ADCONT
76
L SENSOR
I
Linear sensor input(8 bit A/D input)
77
KEY1
I
Key input 1 (8 bit A/D input)
78
KEY2
I
Key input 2 (8 bit A/D input)
79
KEY3
I
Key input 3 (8 bit A/D input)
80
KEY0
I
Key input 0 (8 bit A.D input)
UPD780058GC-067
Function
Active
L
L
L
L
H
L
L
H
L
L
L
L

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