Sony HCD-EC68P Service Manual - Page 45

Panel Board, Ic301, Mb90f831pf-g-spe1 System Controller

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HCD-EC68P/EC78P PANEL BOARD IC301 MB90F831PF-G-SPE1 (SYSTEM CONTROLLER) Pin No. Pin Name I/O Description 1 SEG32 O Segment drive signal output to the liquid crystal display 2 O-AMP-ON O Relay drive signal output terminal (for speaker) 3 O-POWER O Main power on/off control signal output terminal "H": on 4 O-CD-ON O CD power on/off control signal output terminal "H": on 5 to 7 I-3CD-SW3/O-CDMCLOSE, I-3CD-SW2/ NC, I-3CD-SW1/ O-CDM-OPEN I Detection switch input terminal 8 O-3CD-M1+/ O-CDM-M1+ O Motor drive signal output terminal 9 I-RMC I Remote control signal input from the remote control receiver 10 O-3CD-M1-/ O-CDM-M1- O Motor drive signal output terminal 11, 12 O-3CD-M2+/NC, O-3CD-M2-/NC O Motor drive signal output terminal 13 X0A I Sub system clock input terminal (32.768 kHz) 14 X1A O Sub system clock output terminal (32.768 kHz) 15 VCC - Power supply terminal (+3.1V) 16 VSS - Ground terminal 17 to 20 I/O-CD-BUS0 to I/O-CD-BUS3 O Serial data output to the CD-MP3 processor 21 I-3CD-CHACK I Disc chucking detection switch input from the CD mechanism deck (EC78P: UK model) 22 I-3CD-STOCK I Disc stocking detection switch input from the CD mechanism deck (EC78P: UK model) 23 O-DR-MUTE O Muting signal output to the motor/coil driver 24 I-REQ I Request signal input from the CD-MP3 processor 25 O-CD-BUCK O Serial data transfer clock signal output to the CD-MP3 processor 26 O-CD-CCE O Chip enable signal output to the CD-MP3 processor 27 O-CD-RST O System reset signal output to the CD-MP3 processor "L": reset 28 O-LED-STBY O LED drive signal output terminal for STANDBY indicater 29 I-USB-TXD/I-DMP-TXD I Serial data input from the DMPORT connector 30 I-USB-DO/ I-DMP-5V-DET I Power voltage detection signal input terminal 31 O-USB-RXD/ O-DMP-RXD O Serial data output to the DMPORT connector 32 AVCC - Power supply terminal (+3.1V) 33 I-TU-DO I Serial data input from the AM/FM DET 34 O-USB-DI/5V-ON/ O-TP-REC-MUTE O Power on/off control signal output terminal 35 AVSS - Ground terminal 36 I-P-MONI I Power monitor signal input terminal 37, 38 I-KEY1, I-KEY2 I Front panel key input terminal (A/D input) 39 I-TU-ANSD I Power monitor signal input terminal 40 O-USB-SEL1_2/O-SWON/I-TP-STATE I Tape syate detection signal input terminal Not used 41 I-KEY-WAKE-UP/VOL I System wake up signal input terminal 42 I-HOLD I Hold signal input terminal 43 O-CD-SBSY I Subcode block sync signal input from the CD-MP3 processor 44 GND - Ground terminal 45 I-DMP-DET/ O-USB-RST I DMPORT connector detection signal input terminal 46 I-MODEL I Model setting terminal 47 I-SUFFIX I Suffix setting terminal 48 I-1CD-CLOSE_OPEN/ NC I CD table open/close detection signal input terminal (EC78P: UK model) 49 I/O-I2C-DATA I/O Two-way serial data bus with the electrical volume 50 I/O-I2C-CLK O Serial data transfer clock signal output to the electrical volume 51 to 53 MD2 to MD0 - Not used 54 I-RST I Reset signal input from the voltage detect "L": reset For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H" 55 O-TU-CE O Chip enable signal output to the FM/AM DET 56 O-TU-CLK O Serial data transfer clock signal output to the FM/AM DET 45

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HCD-EC68P/EC78P
45
PANEL BOARD
IC301
MB90F831PF-G-SPE1 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
SEG32
O
Segment drive signal output to the liquid crystal display
2
O-AMP-ON
O
Relay drive signal output terminal (for speaker)
3
O-POWER
O
Main power on/off control signal output terminal
"H":
on
4
O-CD-ON
O
CD power on/off control signal output terminal
"H":
on
5 to 7
I-3CD-SW3/O-CDM-
CLOSE, I-3CD-SW2/
NC, I-3CD-SW1/
O-CDM-OPEN
I
Detection switch input terminal
8
O-3CD-M1+/
O-CDM-M1+
O
Motor drive signal output terminal
9
I-RMC
I
Remote control signal input from the remote control receiver
10
O-3CD-M1-/
O-CDM-M1-
O
Motor drive signal output terminal
11, 12
O-3CD-M2+/NC,
O-3CD-M2-/NC
O
Motor drive signal output terminal
13
X0A
I
Sub system clock input terminal (32.768 kHz)
14
X1A
O
Sub system clock output terminal (32.768 kHz)
15
VCC
-
Power supply terminal (+3.1V)
16
VSS
-
Ground terminal
17 to 20
I/O-CD-BUS0 to
I/O-CD-BUS3
O
Serial data output to the CD-MP3 processor
21
I-3CD-CHACK
I
Disc chucking detection switch input from the CD mechanism deck (EC78P: UK model)
22
I-3CD-STOCK
I
Disc stocking detection switch input from the CD mechanism deck (EC78P: UK model)
23
O-DR-MUTE
O
Muting signal output to the motor/coil driver
24
I-REQ
I
Request signal input from the CD-MP3 processor
25
O-CD-BUCK
O
Serial data transfer clock signal output to the CD-MP3 processor
26
O-CD-CCE
O
Chip enable signal output to the CD-MP3 processor
27
O-CD-RST
O
System reset signal output to the CD-MP3 processor
"L": reset
28
O-LED-STBY
O
LED drive signal output terminal for STANDBY indicater
29
I-USB-TXD/I-DMP-TXD
I
Serial data input from the DMPORT connector
30
I-USB-DO/
I-DMP-5V-DET
I
Power voltage detection signal input terminal
31
O-USB-RXD/
O-DMP-RXD
O
Serial data output to the DMPORT connector
32
AVCC
-
Power supply terminal (+3.1V)
33
I-TU-DO
I
Serial data input from the AM/FM DET
34
O-USB-DI/5V-ON/
O-TP-REC-MUTE
O
Power on/off control signal output terminal
35
AVSS
-
Ground terminal
36
I-P-MONI
I
Power monitor signal input terminal
37, 38
I-KEY1, I-KEY2
I
Front panel key input terminal (A/D input)
39
I-TU-ANSD
I
Power monitor signal input terminal
40
O-USB-SEL1_2/O-SW-
ON/I-TP-STATE
I
Tape syate detection signal input terminal
Not used
41
I-KEY-WAKE-UP/VOL
I
System wake up signal input terminal
42
I-HOLD
I
Hold signal input terminal
43
O-CD-SBSY
I
Subcode block sync signal input from the CD-MP3 processor
44
GND
-
Ground terminal
45
I-DMP-DET/
O-USB-RST
I
DMPORT connector detection signal input terminal
46
I-MODEL
I
Model setting terminal
47
I-SUFFIX
I
Suf
fi
x setting terminal
48
I-1CD-CLOSE_OPEN/
NC
I
CD table open/close detection signal input terminal (EC78P: UK model)
49
I/O-I2C-DATA
I/O
Two-way serial data bus with the electrical volume
50
I/O-I2C-CLK
O
Serial data transfer clock signal output to the electrical volume
51 to 53
MD2 to MD0
-
Not used
54
I-RST
I
Reset signal input from the voltage detect
"L": reset
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
55
O-TU-CE
O
Chip enable signal output to the FM/AM DET
56
O-TU-CLK
O
Serial data transfer clock signal output to the FM/AM DET