Read Sony CDX-M30 Service Manual online
27
CDX-M30
• IC Pin Description
IC501 MB90F045PF-G-9060-SPE1 (SYSTEM CONTROL) (MAIN BOARD (3/3))
Pin No.
Pin Name
I/O
Pin Description
1
AREASEL0
I
Destination setting pin (Fixed at L in this set)
2
AREASEL1
I
Destination setting pin (Fixed at L in this set)
3
AREASEL2
I
Destination setting pin (L: FM (50k)/AM (9k), H: FM (200k)/AM (10k))
4
AREASEL3
I
Destination setting pin (Fixed at L in this set)
5
BEEP
O
Beep signal output to power amp IC.
6
COL_SEL
I
Key illumination 2 colors select signal input (H: 2 color)
7
NOSE_SW
I
Front panel detach detection signal input (L: with panel, H: without panel)
8
DIAG
I
Status signal input from power amp IC.
9
VOLATT
O
Attenuator control signal output to electronic volume IC.
10
CYRIL_SEL
I
CYRIL select signal input (L: non CYRIL)
11
VSS
—
Ground
12
TUATT
O
Tuner mute control signal output
13
NSMASK
O
Noise mask signal output (Not used in this set)
14
NCO
O
Not used. (Open)
15
ILLUMI_SEL
I
Illumination voltage setting pin (L: illumination power supply 9 V)
16
NCO
O
Not used. (Open)
17
AUX_SW
O
Not used. (Open)
18, 19
NCO
O
Not used. (Open)
20
MG_SEL
I
Mechanism deck select signal input (H: MG-101FC)
21
B-OUT_SEL
I
Black out select signal input (L: non black out)
22
DIM_SEL
I
Dimmer select signal input (L: auto dimmer)
23
VCC5
—
Power supply pin (+3.3 V)
24
EEP_SIO
I/O
Serial data signal input/output for EEPROM communication.
25
EEP_CKO
O
Serial clock signal output for EEPROM communication.
26
AMPSTB
O
Standby signal output to power amp IC.
27
LCD_CE
O
Chip enable signal output to LCD drive IC.
28
LCD_SO
O
Serial data signal output to LCD drive IC.
29
LCD_CKO
O
Serial clock signal output to LCD drive IC.
30
RDSON
O
RDS ON signal output (Not used in this set)
31
RS_SEL
I
Rear/sub switchable select signal input (H: rear/sub switchable)
32
SA_DATA
O
Data output for electronic volume IC spectrum analyzer.
33
I2C_CKO
O
I2C bus serial clock signal output
34
I2C_SIO
I/O
I2C bus serial data signal input/output
35
DAVDD
—
Power supply pin for A/D converter. (+3.3 V)
36
AVRH
—
External reference power supply pin for A/D converter. (+3.3 V)
37
DAVSS
—
Ground for A/D converter.
38
QUALITY
I
Noise detection signal input
39
VSM
I
S meter voltage detection signal input
40
KEYIN1
I
Key signal input 1
41
KEYIN0
I
Key signal input 0
42
VSS
—
Ground
43
RC_IN0
I
Rotary commander key signal input
44
SA_IN
I
Spectrum analyzer signal input
45
SA_CKO
O
Spectrum analyzer clock signal output
46
DOOR_IND
O
DISC IN indicator LED control signal output
47
RE_IN0
I
Rotary encoder signal input 0
48
RE_IN1
I
Rotary encoder signal input 1
49, 50
MD0, MD1
I
Signal input for operation mode designation. (Fixed at H in this set)
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