JVC KD-S570, Service Manual

Page: 19 / 24

KD-S570/KD-S620
1-19
LC72366-9989 (IC801) : Main micon
1. Pin layout
2. Pin function
1
24
64
41
80 ~ 65
25 ~ 40
~ ~
1
2
3
4
5
6
7
8
9
10
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
XIN
TEST2
J BUS SI
J BUS SO
J BUS SCK
J BUS I/O CONT
SUBQ
SQCK
RESET
LCD SI
LCD SO
LCDSCK
LCD CE
FM ILLUMI
AM ILLUMI
CD ILLUMI
DIMMER OUT
LM0
LM1
KS2
KS1
KS0
DETACH
K2
K1
K0
Vdd
SW2
CD LSI RESET
MCLK
MDATA
MLD
SCL
SDA
4.5MHz crysral oscillation
Connect to ground
J-BUS signal data input ( to 74HC126 )
J-BUS signal data output ( to 74HC126 )
J-BUS output clock signal ( to 74HC126 )
J-BUS I/O control
CD LSI subcode data input
No use
CD LSI subcode clock
Micon reset pin
No use
LCD driver data output
LCD driver clock signal
LCD driver chip enable port
No use
No use
No use
No use
CD loading motor output
CD loading motor output
No use
No use
No use
No use
No use
Output for initial setting diode matrix
Front panel detect
No use
Input for initial setting diode matrix
Input for initial setting diode matrix
5V power supply
CD mechanism switch 2 for 12cm disc
CD LSI reset
CD LSI command clock signal
CD LSI command data output
CD LSI command load signal
No use
No use
E.volume clock output
E.volume data output
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
76
75
76
77
78
79
80
CD ON
RELAY
BBE CTL
BEEP
SW4
SW1
SW3
REST
JOG0
JOG1
CD SENSE
STATUS
P.SAVE2
SD/ST
REMOCON
J BUS INT
BAND
MONO
IFRQ/AGC
MUTE
LEVEL
S METER
KEY CHANGE
KEY2
KEY1
KEY0
P.SAVE1
SENSE
FM IF COUNT
Vdd
AM OSC
FM OSC
Vss
EO
TEST1
XOUT
CD 8V supply on
5V power control
No use
No use
CD mechanism switch 1 for disc in, 8cm disc
CD mecha. switch 3 for disc present, loading end
CD pickup rest position
Rotary encoder input 0
Rotary encoder input 1
CD LSI sense signal
CD LSI status signal
Power save 2 : +B detect
Station detection, Stereo indication
Remocon input
J-BUS interrrupt
FM/AM band selection
FM mono selection
During FM auto search, IF request output H after SD
detected. During AM suto search, AGC output.
Muting switch
Level meter input
S meter input
Connect to ground
Key 2 data input (AD)
Key 1 data input (AD)
Key 0 data input (AD)
Power save 1, ACC power detect
Voltage sense
No use
FM IF counter data input
No use
No use
5V power supply
No use
FM input frequency
Ground
No use
PLL error output signal
Connect to ground
4.5MHz crystal oscillation
Pin
No. Pin
No.
Symbol Symbol Function Function