JVC KD-LH7R Service Manual page 39

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UPD784225GK-623 (IC501) : CPU
1.Pin layout
80 ~
21 ~
2.Pin function
Pin
Symbol
I/O
no.
1 I
TEMP
-
2
GND
-
3
GND
-
4
AVSS
-
5
ADCONT
-
6
NC
-
7
AVREF1
I
8
EPROMDI
O
9
EPROMDO
I/O
10
EPROMCK
-
11
LCDCE/SO
TE
L 13942296513
-
12
LCDDA/SI
-
13
LCDCK
I/O
14
/BUSIO
I/O
15
BUSIO
I
16
BUSSI
O
17
BUSSO
I/O
18
BUSSCK
-
19
BUSOUT
O
20
CDON
I
21
CDREQ
O
22
CDMUTE
-
23
NC
O
24
DSPRESET
O
25
CCE
O
26
BUCK
I/O
27
BUS3
I/O
28
BUS2
I/O
29
BUS1
I/O
30
BUS0
-
31
2XPLAY
I
32
RWSEL
-
33
VSS1
O
34
LOAD
O
35
www
LD/FE
I
36
MP3DI
O
37
MP3DO
O
38
MP3CK
.
O
39
MP3RESET
I
40
MPSSTB
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61
40
Function
Connect to TEMP detecter
Connect to GND
Connect to GND
Connect to GND
No use
No use
Analog reference voltage
Data input terminal from EEPROM
Data output terminal from EEPROM
Clock signal I/O terminal with EEPROM
No use
No use
No use
J-BUS data I/O terminal
J-BUS data I/O terminal
J-BUS data input
J-BUS data output
J-BUS clock I/O
No use
The CD power supply control signal output.At CD:H
CD request
CD Mute
No use
DSP reset
CE output for data communication with CDLSI
Clock output for data communication with CDLSI
Data communication input output port 3 with CDLSI
Data communication input output port 2 with CDLSI
Data communication input output port 1 with CDLSI
Data communication input output port 0 with CDLSI
No use
CD RW select
Connect to GND
Loading signal
LDFLE switching signal
MP3 data input
x ao
y
MP3 data output
MP3 data clock
i
MP3 data reset
MP3 data standby
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8
Pin
Symbol
I/O
no.
41 -
NC
42 -
NC
43 -
NC
44 O
DACML
45 O
DACMC
46 O
DACMD
47 I
DACCS
48 -
NC
49 -
NC
50 -
NC
51 -
NC
Q Q
3 6 7 1 3
52 O
DISCSEL
53 O
DACSEL
54 -
NC
55 -
TEST MODE
56 O
MP3SEL
57 I
8VDET
58 I
REST
59 I
SW2
60
RESET
61 I
SW1
62 I
B.DET
63 I
P.DET
64 I
BUSINT
65 O
MP3REQ
66 -
NC
67 -
VSS0
68 -
VDD1
69 -
X2
70 I
X1
71 I
VPP
72 -
XT2
73 -
XT1
74 -
VDD0
75 -
AVDD
76 I/O
IOP
u163
77 I
KEY0
78 I
KEY1
.
79 I
KEY2
80 I
KEY3
2 9 9 4 2 8
Function
Non use
Non use
Non use
DAC mode control latch
DAC mode control clock
DAC mode control data
DA convertor chip select
No use
No use
No use
No use
1 5 0 5 8 2 9 9 4
Initial setting
DA convertor select
No use
Connect to GND
MP3/CD-DA switch SW L:CD H:MP3
8V detection
Systemreset signal input
Detection switch of CD mechanism
Reset detection terminal
Detection switch of CD mechanism
Panel switch detection
Power switch detection
J-BUS signal interrupt input
MP3 request
No use
Connect to ground
Reference voltage terminal
No use
Connect to X'tal osc.
Test terminal
Non use
Connect to ground
Connect to ground
m
Reference voltage terminal
Laser signal input output
co
Key control signal input 0
Key control signal input 0
Key control signal input 0
Key control signal input 0
KD-LH7R
9 9
2 8 9 9
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