Microprocessor Terminal Description - Onkyo FR-155 Service Manual

MICROPROCESSOR TERMINAL DESCRIPTION

Q701:MPD780058GC-8BT
PIN
Function I/O
No.
1 ROTEN2 I Pulse input pin 1 from rotary encoder.
2 ROTEN1 I Pulse input pin 2 from rotary encoder.
3 FLRESET O Reset signal output pin for FL driver IC(M66004)
4 GND I Ground pin.
SHUTDOWN O Output pin of power failure signal for MD mechanism microcomputer.
5
6 RCREQ O Serial data output pin for communication of MD microcomputer.
7 AVDD I Power supply pin for A/D converter.
8 MDDATA I Serial transfer data input pin from MD mechanism microcomputer.
9 RCDATA O Serial transfer data output pin to MD mechanism microcomputer.
SCLK O Serial transfer clock output pin to MD mechanism microcomputer.
10
11 FLCE O Chip enable signal output pin for FL drover IC(M66004).
12 FLDATA O Serial data output pin for FL drover IC(M66004).
13 FLCLK O Clock data output pin for FL drover IC(M66004).
14 TXD O Output pin for flash writer.
15 RXD I Input pin for flash writer.
SQSO I Input pin of subcode data from CD signal processor IC(CXD2589).
16
17 SENS I Input pin of sens data from CD signal processor IC(CXD2589).
18 SQCK O Clock signal output pin for read out to signal processor IC(CXD2589).
19 CDCLK O Command output pin for transfer the clock signal to CD signal processor IC(CDX2589).
20 CDDATA O Command output pin for transfer the data signal to CD signal processor IC(CXD2589).
21 CDXLT O Command output pin for transfer the latch signal to CD signal processor IC(CXD2589).
CDRESET O Reset signal output pin for CD circuit ICs(CXD2589,CXA1992)
22
23 CDPOWER O Control signal output pin for CD circuit.
24 OPEN O Control signal output pin for motor driver IC of CD tray.
25 CLOSE O Control signal output pin for motor driver IC of CD tray.
26 ACPOWER O Control signal output pin for relay of main power supply.
OPENSW I Detection signal input pin for the opening completion of CD tray.
27
28 CLOSESW I Detection signal input pin for the closing completion of CD tray.
29 SENS2 I Sens2 signal input pin from CD servo IC(CXA1992)
30 ECOLED O Control output pin of energy save indicator.
31 RECVOL1 O Output pin 1 for MD recording level adjust IC.
32 RECVOL2 O Output pin 2 for MD recording level adjust IC.
GND I Ground pin.
33
34 RCPOWER O Output pin for control relay of power supply in receiver section.
35 MDRESET O Output pin of reset signal for MD mechanism.
36 BAND0 I Initializing input pin 1 for FM band.
37 BAND1 I Initializing input pin 2 for FM band.
AM10K I Initializing input pin 2 for AM band step.
38
39 RDSEN I Initializing input pin of RDS function. (H=Function, L=Not function)
40 I Not used.(ground)
Description
PIN
Function
I/O
No.
41 CDMUT O Muting signal output pin for CD analog signal.
42 SELMUT O Muting signal output pin for audio section.
43 APLED O Control output pin of acoustic presence indicator.
44 RECMUT O Muting signal output pin for muting of MD recording signal.
45 Chip enable signal output pin for function ICs(T9273,TC9162).
FCE/VCE O
46
TUMUT O Muting signal output pin for tuner signal.
47 CCLK O Clock data output pin for Ics of receiver section.
48 CDATA O Serial data output pin for Ics of receiver section.
49 FREQCAL O Output pin for adjustment of main clock frequency
50 Initialization input pin for model set.
MODEL1 I
51 FM stereo broadcast detection input pin.
STEREO I
52 SD I Broadcast detection input pin.
53 PLLCE O Chip enable signal output pin for tuner PLL IC.
54 RDSSIG I Not used.
55 RDSDATA I Not used.
56 Control output pin for motor driver IC of volume.
VOLUP O
57
VOLDOWN O Control output pin for motor driver IC of volume.
58 SYSIN I System code input pin.
59 SYSOUT O System code output pin.
60 RESET I System reset input pin.
61 REMIN Signal input pin from remote sensor.
I
62 Control output pin for CD/MD digital output selector. (H=CD, L=MD)
DOUT O
63
POFF I Power failure detect input pin.
64 RDSCLK I Not used.
65 SCOR I Detection signal input pin CD signal processor IC(CXD2589).
66 MDREQ I Signal input pin for communication from MD mechanism microprocessor.
67 Ground pin.
GND I
68
VDD I Power supply pin. (+5V)
69 CLOCK O Master clock connection pin.
70 CLOCK I Master clock connection pin. (connect the trimming capacitor)
71 GND I Not used. (connect ground)
72 O Not used.
73 Not used. (connect ground)
GND I
74
VDD I Power supply pin. (+5V)
75 AVDD I Power supply for A/D converter.
76 K0 I Operation key-1 connection input pin.
77 K1 I Operation key-2 connection input pin.
78 Operation key-3 connection input pin.
K2 I
79
MDRECMODE I Connect the MD recording mode serector.
80 SIGNAL I Signal level input pin for automatic memory.
Description