Upd178078Gf-642 (Ic801) : System Cpu - JVC KD-SV3000 Service Manual

4.19 UPD178078GF-642 (IC801) : System CPU

• Pin Layout
80
81
100
1
• Pin function
Pin No. Symbol
1 to 8 NC
9 E.VOL.DATA_OUT
10 E.VOL.SCK
11 NC
12 LCD SO
13 LCD SCK
14 MECHA POWER
15 LCD CE
16 to 18 NC
19 ENC1
20 ENC2
21,22 NC
23 KEY0
24 KEY1
25 KEY2
26 to 29 AVDD
30 LEVEL IND
31 SM
32 AVSS
33 REGCPU
34 VDD
35 REGOSC
36 XOUT
37 XIN
38 GND
39 IFCCONT
40 GND
41 NC
42 IF COUNT
43 VDDPLL
44 OSC IN
45 NC
46 GNDPLL
47 EQ
48 NC
49 VPP
50 RESET
51 REMOCON
52 NC
53 MECHA.RESET
54 to 65 NC
1-44 (No.49837)
51
50
31
30
I/O
- Not connect
O E.VOLUME data output
O E.VOLUME clock output
- Not connect
O LCD data output
O LCD driver clock output
O Linked with MECHA ON
O LCD driver chip enable signal output
- Not connect
I Rotary volume signal A input
I Rotary volume signal B input
- Not connect
I Key input 1
I Key input 2
I Key input 3
- Power supply for A/D converter (Connect to VDD)
I Level meter A/D input
I S meter (electric field strength) input
- Ground for A/D converter (Connect to ground)
- Regulator for CPU power supply
- Power supply
- Power supply for oscillator circuit
O Crystal oscillator connect terminal for system clock
I Crystal oscillator connect terminal for system clock
- Connect to ground
O IFC output prohibition signal
- Connect to ground
- Not connect
I FM/AM IF count signal input
- Connect to VDD
I FM/AM local oscillation signal input
- Not connect
- Connect to ground
O PLL error signal output
- Not connect
- Connect to ground through the resistor
I Main micon reset input
I Optical remocon signal input
- Not connect
O CD micon reset signal output
- Not connect
Function