JVC KD-SX980 Service Manual page 30

KD-SX980
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UPD784225GK-623 (IC501) : CPU
1.Pin layout
60 ~
61
~
80
1 ~
2.Pin functions (1/2)
Pin No. Symbol
1 TEMP IN
2,3 -
4 AVSS
5 ADCONT
6 -
7 AVREF1
8 EPROMDI
9 EPROMDO
10 EPROMCK
11 LCD CE
12 LCD DA
13 LCD CK
14 BUS I/O
15 BUS I/O
TE
L 13942296513
16 BUS SI
17 BUS SO
18 BUS SCK
19 BUSOUT
20 CD ON
21 CD REQ
22 CD MUTE
23 -
24 DSP RESET
25 CCE
26 BUCK
27 BUS3
28 BUS2
29 BUS1
30 BUS0
31 2X PLAY
32 RW SEL
33 VSS1
34 LD
35 LD/FE
36 MP3 DI
37 MP3 DO
www
38 MP3 CK
39 MP3 RESET
40 MP3 STB
41~43 -
44 DAC ML
45 DAC MC
46 DAC MD
1-30
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41
40
~
21
20
I/O Function
I Temp. detection input terminal
- No use
- Connect to GND
O Output H level at power to on
- -
- Connect to 3.3V
I EEPROM data input terminal
O EEPROM data output terminal
I/O EEPROM clock signal input/output terminal
O Chip enable output for LCD driver
O Data output for LCD driver
O Clock outout for LCD driver
O JVC BUS input/output control terminal (negative)
O JVC BUS input/output control terminal
I JVC BUS data input terminal
O JVC BUS data output terminal
I/O JVC BUS clock input/output terminal
O JVC BUS BUSOUT output terminal
O Power supply (3.3V) control for CD
O CD mechanism power supply to on request signal output terminal
O CD mute signal output terminal
- -
O CD DSP reset signal output terminal
O CD DSP chip enable output terminal
O CD DSP data clock output terminal
I/O CD DSP data 3 input/output terminal
I/O CD DSP data 2 input/output terminal
I/O CD DSP data 1 input/output terminal
I/O CD DSP data 0 inout/output terminal
O RF frequency responce select output of 2xspeed playback
O CD-RW select output terminal (RW:L)
- Connect to GND
O Loading signal output terminal
O Loading/Feed select signal output terminal (H:LD,L:FE)
I CD MP3 data input terminal
O CD MP3 data output terminal
O Clock signal output terminal for CD MP3 data
O x CD MP3 reset signal output terminal ao
y
O CD MP3 standby signal output terminal (H:Standby)
. i
- -
O DAC mode control latch output terminal
O DAC mode control BCK output terminal
O DAC mode control data output terminal
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