Read Sony CDX-H905IP / CDX-HR905IP Service Manual online
CDX-H905IP/HR905IP
33
• IC Pin Function Description
MAIN BOARD (4/4) IC501 MB90F045PF-G-9062-SPE1 (SYSTEM CONTROL)
MAIN BOARD (4/4) IC501 MB90F045PF-G-9062-SPE1 (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Description
1
AREASEL0
I
Destination setting pin
2
AREASEL1
I
Destination setting pin (Fixed at L)
3
AREASEL2
I
Destination setting pin (H: FM (200k)/AM (10k), L: FM (50k)/AM (9k) (CDX-H905IP only))
4
AREASEL3
I
Destination setting pin
5
BEEP
O
Beep signal output to power amp IC.
6
AMPSTB
O
Standby signal output to power amp IC.
7
DIAG
I
Status signal input from power amp IC.
8
NCO
—
Not used. (Open)
9
SA_DATA
O
Data output for electronic volume IC.
10
SA_CKO
O
Spectrum analyzer clock signal output
11
VSS
—
Ground
12
TUATT
O
Tuner mute control signal output
13
NSMASK
O
Noise mask signal output (CDX-HR905IP only)
14
VOLATT
O
Mute control signal output to electronic volume IC.
15
ILLUMI_SEL
I
Not used. (Fixed at L)
16 to 20
NCO
—
Not used. (Open)
21
B-OUT_SEL
I
Black out select signal input. (Not used in this set)
22
NCO
—
Not used. (Open)
23
VCC5
—
Power supply (+3.3 V)
24
EEP_SIO
I/O
Serial data signal input/output for EEPROM.
25
EEP_CKO
O
Serial clock signal output for EEPROM.
26
RDS_ON
O
RDS ON signal output (CDX-HR905IP only)
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_SCK
O
Serial clock signal output to LCD drive IC.
30
DOOR_IND
O
DISC SLOT indicator LED control signal output
31
RE_IN0
I
Rotary encoder signal input 0
32
RE_IN1
I
Rotary encoder signal input 1
33
I2C_SCK
O
I2C bus serial clock signal output
34
I2C_SIO
I/O
I2C bus serial data signal input/output
35
DAVDD
—
A/D converter power supply (+3.3 V)
36
AVRH
—
A/D converter external reference power supply (+3.3 V)
37
DAVSS
—
Ground
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
INI_COL
I
Initial color setting signal input (Not used in this set)
45
COL_SEL
I
Key illumination 2 colors select signal input (Not used in this set)
46
SA_IN
I
Spectrum analyzer signal input
47
NCO
—
Not used. (Open)
48
AD_ON
O
A/D converter power supply control signal output
49, 50
MD0, MD1
I
Operation mode designation input. (Fixed at H)
51
MD2
I
Operation mode designation input. (Fixed at L)
52
KEYACK
I
Key acknowledge signal input
53
TU_ATTIN
I
Tuner mute zero cross detection signal input (CDX-HR905IP only)
54
BUIN
I
Backup power supply detection signal input
55
FUNC_SEL
O
AUX audio input/iPod audio input select control signal output
56
DAVN
I
RDS data block synchronized detection signal input from RDS receiver IC.
(CDX-HR905IP only)
(CDX-HR905IP only)
57
BUSON_A
O
Bus ON signal output
58
UNISI
I
SONY-BUS data signal input
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