Description Of Major Ics - JVC KD-S871R Service Manual

KD-S871R

Description of major ICs

UPD178078GF-561 (IC701) : System CPU
1.Pin layout
81
~
100
2.Pin function (1/2)
Pin
NO.
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
41
42
43
44
45
1-16
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80 ~ 51
50
~
31
1 ~ 30
Symbol I/O
NC -
BUSINT I
BUSSI I
BUSSO O
JBUS-SCK O
NC -
I2CDAI I
I2CDAO O
I2CCLK O
NC -
LCDDA O
LCDSCK O
BUSI/O O
NC -
LCODE O
SW2 I
SW3 I
SW4 I
RESTSW I
LED RED I
LED BLUE I
KEY0 I
KEY1 I
KEY2 I
LEVEL I
AVDD -
SM I
SQ -
NC -
AVSS -
REGCPU -
VDD -
REGOSC -
X2 -
X1 I
GND0 -
SD/ST I
GND2 -
NC -
IFC I
VDDPLL -
OSC I
NC -
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FUNCTION
No use
JVC bus communication line
JVC bus communication line
JVC bus communication line
JVC bus communication line
No use
Serial data input
Serial data output
Serial clock output
No use
LCD driver serial data output
Serial data for LCD
JVC bus output select
No use
LCD driver communication line
CD mech switch
CD mech switch
CD mech switch
Traverse mech rest switch
Control red color
Control blue color
Key input
Key input
Key input
Audio level input
Power supply
Signal level meter input
Signal level meter input
No use
Connect to GND
Connect to GND with capacitor
Power supply
Connect to GND with capacitor
System clock
System clock
Connect to GND
Station detector & Stereo indicator
Connect to GND
No use
IF count input
---
FM,AM osc input
No use