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KW-XC828
UPD784225GK-623 (IC501) : CPU
1.Pin layout
80
~
21
~
2.Pin function
Pin
Symbol
I/O
no.
Connect to TEMP detecter
1
I
TEMP
-
Connect to GND
2
GND
-
Connect to GND
3
GND
-
Connect to GND
4
AVSS
-
No use
5
ADCONT
-
No use
6
NC
-
Analog reference voltage
7
AVREF1
I
Data input terminal from EEPROM
8
EPROMDI
O
Data output terminal from EEPROM
9
EPROMDO
I/O
Clock signal I/O terminal with EEPROM
10
EPROMCK
-
No use
11
LCDCE/SO
-
No use
12
LCDDA/SI
-
No use
13
LCDCK
I/O
J-BUS data I/O terminal
14
/BUSIO
I/O
J-BUS data I/O terminal
15
BUSIO
I
J-BUS data input
16
BUSSI
O
J-BUS data output
17
BUSSO
I/O
J-BUS clock I/O
18
BUSSCK
-
No use
19
BUSOUT
O
20
The CD power supply control signal output.At CD:H
CDON
I
CD request
21
CDREQ
O
CD Mute
22
CDMUTE
-
No use
23
NC
O
DSP reset
24
DSPRESET
O
25
CE output for data communication with CDLSI
CCE
O
26
Clock output for data communication with CDLSI
BUCK
I/O
27
Data communication input output port 3 with CDLSI
BUS3
I/O
28
Data communication input output port 2 with CDLSI
BUS2
I/O
Data communication input output port 1 with CDLSI
29
BUS1
I/O
30
Data communication input output port 0 with CDLSI
BUS0
-
No use
31
2XPLAY
I
CD RW select
32
RWSEL
-
Connect to GND
33
VSS1
O
Loading signal
34
LOAD
O
LDFLE switching signal
35
LD/FE
I
MP3 data input
36
MP3DI
O
MP3 data output
37
MP3DO
O
MP3 data clock
38
MP3CK
O
MP3 data reset
39
MP3RESET
I
MP3 data standby
40
MPSSTB
1-40
61
40
Function
Pin
Symbol
I/O
no.
41
-
Non use
NC
42
-
Non use
NC
43
-
Non use
NC
44
O
DAC mode control latch
DACML
45
O
DAC mode control clock
DACMC
46
O
DAC mode control data
DACMD
47
I
DA convertor chip select
DACCS
48
-
No use
NC
49
-
No use
NC
50
-
No use
NC
51
-
No use
NC
52
O
Initial setting
DISCSEL
53
O
DA convertor select
DACSEL
54
-
No use
NC
55
-
Connect to GND
TEST MODE
56
O
MP3/CD-DA switch SW L:CD H:MP3
MP3SEL
57
I
8V detection
8VDET
58
I
Systemreset signal input
REST
59
I
Detection switch of CD mechanism
SW2
60
Reset detection terminal
RESET
61
I
Detection switch of CD mechanism
SW1
62
I
Panel switch detection
B.DET
63
I
Power switch detection
P.DET
64
I
J-BUS signal interrupt input
BUSINT
65
O
MP3 request
MP3REQ
66
-
No use
NC
67
-
Connect to ground
VSS0
68
-
Reference voltage terminal
VDD1
69
-
No use
X2
70
I
Connect to X'tal osc.
X1
71
I
Test terminal
VPP
72
-
Non use
XT2
73
-
Connect to ground
XT1
74
-
Connect to ground
VDD0
75
-
Reference voltage terminal
AVDD
76
I/O
Laser signal input output
IOP
77
I
Key control signal input 0
KEY0
78
I
Key control signal input 0
KEY1
79
I
Key control signal input 0
KEY2
80
I
Key control signal input 0
KEY3
Function
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