Clarion DB538RMP, Service Manual

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DB538RMP DB538RMP
DB538RMP DB538RMP
DB538RMP
1 RDS_CLK I RDS Clock
2 B/U DET I B/U detecting terminal
3 LCD SI I Serial data communication line to
LCD Control IC
4 LCD SO O Serial data communication line to
LCD Control IC
5 LCD SCK O Serial data communication line to
LCD Control IC
6 LCD CE O Serial data communication line to
LCD Control IC
7 REM_DET I While protecting circuit motion, it
is at ‘HI’
8 NC - NC
9 NC - NC
10 NC - NC
11 VOL-CW I Use for rotary volume
12 VOL-CCW I Use for rotary volume
13 NC - NC
14 NC - NC
15 RDS_TEST O PULL UP
16 SD/ST_IND I While AM/FM SD in, ST is ‘0’
17 NC - NC
18 AM_DX/LO O AM DX/LO High=DX GND
19 A-ANT_ON O NC
20 RDS_DATA I RDS data in
21 RDS_MUTE O RDS MUTE Active Hi
22 MUTE_SPEED O RDS MUTE Active Low
23 KEY A/D I FUNC/EJECT/DCP detection
terminal for A/D converter
24 TEST I For Test Mode purpose
25 RDS-SMETER I RDS Signal Meter Input
26 RDS-NOISE I RDS Noise Input
27 AVDD - VDD
28 NC - NC
29 NC - NC
30 NC - NC
31 NC - NC
32 AVSS - GND
33 CPU_REG - Regulator terminal for CPU power
supply
34 VDD - Power supply terminal
35 OSC_REG - Power supply regulator terminal
for oscillator
36 X_OUT - X-TAL 4.5MHz
37 X_IN - X-TAL 4.5MHz
38 GND - GND
39 ST O Usually input ‘ST’ lights at ‘LO’;
always at ‘HI’ during seeking
40 GND - GND
41 AM_IF_CNT I AM IF counter
42 FM_IF_CNT I FM IF counter
43 VDD - VDD
44 FM_OSC I FM VCO input terminal
Pin No PIN NAME I/O DESCRIPTION
EXPLANATION OF IC
uPD178078GF-583 052-1936-01
Master Micro computer
Outward Form
100 pins, plastic QFP
Terminal Description
45 AM_OSC I AM VCO input terminal
46 GND - GND
47 FM_EO O FM PLL VT
48 AM_EO O AM PLL VT
49 GND - GND
50 RESET I Reset Port
51 ACC DET I ACC detecting terminal
52 REMOCON I Remote control
53 B/L + B O While ACC is ON, it is at ‘HI’
54 PHONE_AUDIO I NC
55 CS1 I Destination selection setting
56 CS2 I Destination selection setting
57 IF_REQ O During seeking, it is at ‘HI’. While
detecting RDS SD, it is at ‘LO’.
58 NC - NC
59 STANDBY O Power Amp IC control terminal
60 NC - NC
61 REM_ON - While Power on, it is at ‘HI’
62 REM 5V O REM 5V power supply control
terminal. (N-ch open drain port)
63 SYS_MUTE O Output mute. While it is ‘LOW’,
mute is ‘ON’. (N-ch open drain
port)
64 FM ON O While ‘LO’ = AM and ‘HI’ = FM.
(N-ch open drain port)
65 AM ON O While ‘HI’ = AM and ‘LO’ = FM.
(N-ch open drain port)
66 ACC (CD ON) O CDP ACC
67 FM_DX/LO O FM DX/LO High=Local
68 NC - NC
69 NC - NC
70 NC - NC
71 NC - NC
72 NC - NC
73 NC - NC
74 NC - NC
75 VOL_CLK O E-VOL use
76 VOL_DATA O E-VOL use
77 NC - NC
78 KEY_INT I When this terminal turns low, key
A/D terminal detects the key
pushed
79 CDP BUS I/O CDP BUS line
80 PHONE_INT I Phone interrupted
81 OFFSET DET I Offset detect terminal
82 GND - GND
83 NC - NC
84 NC - NC
85 NC - NC
86 NC - NC
87 NC - NC
88 NC - NC
89 NC - NC
Pin No PIN NAME I/O DESCRIPTION