21
CDC-R30MP/X30MP
• IC901 µPD178076GF-572-3BA (SYSTEM CONTROL) (MAIN BOARD) (CDC-X30MP)
• IC901 µPD178078GF-590-3BA (SYSTEM CONTROL) (MAIN BOARD) (CDC-R30MP)
Pin No. Pin Name I/O Pin Description
1BATT IN I BATT signal input
2 DFP IN I Front panel with/without detection signal input
3 LCD DI I LCD data signal input from the LCD driver IC (IC601)
4 LCD DO O LCD data signal output to the LCD driver IC (IC601)
5 LCD CLO O LCD sync clock signal output to the LCD driver IC (IC601)
6 LCD CE O LCD driver CE signal output to the LCD driver IC (IC601)
7 BBE1 O BBE on/off change signal output to the electronic volume IC (IC401)
8 CDS DI I CDS data signal input from the mechanism control IC (IC301)
9 CDS DO O CDS data signal output to the mechanism control IC (IC301)
10 CDS CLO O CDS sync clock signal output from mechanism control IC (IC301)
11 – 15 NC O Not used in this set. (Open)
16 BBE2 O BBE effect change signal output
17 NC O Not used in this set. (Open)
18 EVOL CLO O Clock signal output to the electronic volume IC (IC401)
19 EVOL DO O Data signal output to the electronic volume IC (IC401)
20 EVOL CE O CE signal output to the electronic volume IC (IC401)
21 LOC/DX O LOC/DX change signal output when radio seek to the tuner unit (TU101)
22 DSSA CONT O DSSA control signal output DSSA L/R operation: “H”
23 ACC DETECTOR I Power overvoltage detection signal input
24 PHONE MUTE I Mute control signal input from external
25 LEVELIND I Voltage detection signal input for level indicater
26 TEST — CDS test mode pin “L”: Test mode
27 AVDD — Power supply pin (+5 V)
28 – 30 NC I Not used in this set. (Connected to ground.)
31
FM/AM
I
CDC-R30MP: RDS AF signal input
S METER CDC-X30MP: FM/AM S meter signal input
32 AVSS — Ground pin
33 REGCPU — Regulator pin for CPU power supply
34 VDD — Power supply pin (+5 V)
35 REGOSC — Regulator pin for oscillation circuit
36 X2 — System clock oscillation connection pin (6.3 MHz)
37 X1 — System clock oscillation connection pin (6.3 MHz)
38 GND — Ground pin
39 IF REQ O IF count request signal output from the tuner unit (TU101)
40 GND — Ground pin
41 AM IF I AM IF count signal input from the tuner unit (TU101)
42 FM IF I FM IF count signal input
43 VDD PLL — Power supply pin for PLL (+5 V)
44 FM OSC I FM local oscillator signal input from the tuner unit (TU101)
45 AM OSC I AM local oscillator signal input from the tuner unit (TU101)
46 GND PLL — Ground pin for PLL
47, 48 EO 0, EO 1 O Error out signal output from the charge pomp
49 IC — Not used in this set. (Connected to ground.)
50 RESET I System reset signal input from the SW901
51 RDS CLK IN I
CDC-R30MP: RDS clock signal input from the RDS IC (IC151)
CDC-X30MP: Not used in this set. (Connected to ground.)
52 ACC IN I Accessory on/off detection signal input
53 RMT IN I Remote control signal input from the remote control receiver IC (IC681)
54 ST IND/SD IN I
Stereo signal input when FM/AM receive “H”: Mono, “L”: Stereo
Broadcasting station signal input when seek “H”: LOC, “L”: DX
55 NC — Not used in this set. (Open)
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