Read Sony ICF-CDK70 Service Manual online
ICF-CDK70
33
• IC Pin Function Description
MAIN BOARD IC801 MB90802PF-G-124E1 (SYSTEM CONTROLLER)
MAIN BOARD IC801 MB90802PF-G-124E1 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
O-TU-DO
O
Serial data output to the FM/AM PLL
2
O-TU-CE
O
Chip enable signal output to the FM/AM PLL "L": active
3
I-CD-LIMSW
I
Detection input from the sled limit-in detect switch
The optical pick-up is inner position when "L"
The optical pick-up is inner position when "L"
4
I-CD-BUSY
I
Busy signal input from the CD DSP
5
O-CD-DIN
O
Serial data output to the CD DSP
6
O-CD-MCK
O
Serial data transfer clock signal output to the CD DSP
7
I-CD-DOUT
I
Serial data input terminal
8
O-CD-RW
O
Data read/write selection signal output to the CD DSP
9
I-RMC
I
Remote control signal input from the remote control receiver
10
O-POWER CD
O
CD power on/off control signal output terminal "H": CD power on
11
O-AMP STANDBY
O
Output control signal output to the power amplifi er
12
O-4.5V CE
O
Not used
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 (+3.3V)
16
VSS
-
Ground terminal
17
O-CD-XRST
O
System reset signal output to the CD DSP "L": reset
18
O-MO2-
O
Motor drive signal (-) output terminal for CAM rotation
19
O-MO2+
O
Motor drive signal (+) output terminal for CAM rotation
20
O-MO1-
O
Motor drive signal (-) output terminal for drawer movable
21
O-MO1+
O
Motor drive signal (+) output terminal for drawer movable
22
O-A MUTE
O
Audio muting on/off control signal output terminal "H": muting on
23
O-BUZZER
O
Buzzer drive signal output terminal
24
O-BASS BOOST OFF
O
Not used
25
I-TRSW3
I
CD switch (SW3) input terminal
26
I-TRSW1
I
CD switch (SW1) input terminal
27
I-TRSW7
I
CD chuck switch (SW7) input terminal
28
I-TRSW2
I
CD switch (SW2) input terminal
29
I-TRSW6
I
CD close switch (SW6) input terminal
30
I-TRSW5
I
CD stock switch (SW5) input terminal
31
I-TRSW8
I
CD open switch (SW8) input terminal
32
AVCC
-
Power supply terminal (+3.3V) (for A/D converter)
33
O-VOL-DATA
O
Serial data output to the electrical volume
34
O-VOL-CLK
O
Serial data transfer clock signal output to the electrical volume
35
AVSS
-
Ground terminal (for A/D converter)
36
I-REG6.0V-CHK
I
Input terminal for +6V power supply voltage detection
37
I-REG4.5V-CHK
I
Input terminal for +4.5V power supply voltage detection
38 to 40
I-KEY0 to I-KEY2
I
Front panel key input terminal (A/D input)
41
I-REG3.3V-CHK
I
Input terminal for CD +3.3V power supply voltage detection
42
I-AC IN
I
Not used
43
I-CD-SUBSYQ
I
Subcode Q data (80 bit serial) input from the CD DSP
44
VSS
-
Ground terminal
45 to 47
I-SUFFIX 0 to
I-SUFFIX 2
I
Input terminal for destination discrimination
48
I-BASS BOOST ON/
OFF
I
MEGA BASS switch input terminal "L": MEGA BASS on, "H": MEGA BASS off
49, 50
I-ENCODER +,
I-ENCODER -
I
Jog dial pulse input from the rotary encoder (VOLUME)
51 to 53
MD2 to MD0
I
Input terminal for fl ash writing mode setting
54
I-RESET
I
System reset signal input from the reset signal generator "L": reset
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
55 to 57
O-DISC1KEY LED to
O-DISC3KEY LED
O
LED drive signal output terminal
58
VLCD
I
Input terminal for liquid crystal display drive voltage setting
59 to 62
COM4 to COM1
O
Common drive signal output to the liquid crystal display
Click on the first or last page to see other ICF-CDK70 service manuals if exist.