JVC KS-FX43R, Service Manual

Page: 24 / 53

KS-FX483R,KS-FX480R,KS-FX43R
1-24 (No.49812)
4.8 UPD178078GF-595 (IC701): System CPU
• Pin Layout
• Pin function
80 ~ 51
1 ~ 30
50
~
31
81
~
100
Pin No. Symbol I/O Function
1 PS1 I Power save 1
2 PS2 I Power save 2
3~6 NC - No use
7 J-BUS I/O I/O J-BUS communication I/O port
8 J-BUS IN I J-BUS communication input
9 J-BUS OUT O J-BUS communication output
10 J-BUS SCK O J-BUS serial clock output
11 NC - No use
12 I2CDAO O Serial data output
13 I2C3CK O Serial clock output
14,15 NC - No use
16 F/R O Forward/Reverse selection
17~22 NC - No use
23 LEVEL I Audio level input
24 SM I Signal level meter input
25 SQ - Signal quality input
26 GND - GND
27 AVDD - Power supply
28 GND - GND
29 KEY0 I Key 0 input
30 KEY1 I Key 1 input
31 KEY2 I Key 2 input
32 AVSS - GND
33 REGCPU - Connect to GND with capacitor
34 VDD - Power supply
35 REGOSC - Connect to GND witj capacitor
36 X2 - System clock
37 X1 I System clock
38 GND0 - GND
39 SEEK/STOP O Switchng SEEK/STOP
40 GND2 - GND
41 NC - No use
42 IFC I IF control input
43 VDDPLL - Power supply for PLL
44 OSC INPUT I FM,AM osc input
45 NO USE - No use
46 GNDPLL - GND
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