38
CDX-F7710/F7710S/F7715X/F7750/F7750S
• IC303 MB90487APFV-G-127-BNDE1 (SYSTEM CONTROL) (MAIN BOARD (3/4))
Pin No.
Pin Name
I/O
Pin Description
1
DIAG
I
Power amplifier self diagnostic test functions signal input
2
STB
O
Power amplifier standby signal output
3
NC
—
Not used. (Open)
4
ATT
O
LINE mute control signal output
5
BEEP
O
Power amplifier beep signal output
6
NC
—
Not used. (Open)
7
FSW IN
I
FL switch signal input
8
NC
—
Not used. (Open)
9
VSS
—
Ground pin
10
DST SEL0
I
Distination select signal input 0
11
DST SEL1
I
Distination select signal input 1
12
611 SEL
I
611 CD mechanism type select signal input
13 to 18
NC
—
Not used. (Open)
19
EE SIO
I/O
EEPROM serial data signal input/output
20
EE SCK
O
EEPROM serial clock signal output
21
VCC
—
Power supply pin (+3.3 V)
22
Z DET
I
611TA/TS CD mechanism type zero mute detect signal input
23
CDM ON IN
I
611TA/TS CD mechanism on/off signal input
24
CD ON IN
I
611TA/TS CD mechanism type CD on/off signal input
25
DP RX
I
Display microcomputer interface signal input
26
DP TR
O
Display microcomputer interface signal output
27
NC
—
Not used. (Open)
28
BUS ON
O
Bus on/off signal output
29
SYS RST
O
Bus system reset signal output
30
NC
—
Not used. (Open)
31
I2C SCK
O
I2C bus serial clock signal output
32
I2C SIO
I/O
I2C bus serial data signal input/output
33
AVDD
—
Power supply pin for A/D converter (+3.3 V)
34
AVRH
—
External reference power supply pin for A/D converter
35
AVSS
—
Ground pin for A/D converter
36
SA IN
I
Spectrum analyzer data signal input
37
NC
—
Not used. (Open)
38
VSM
I
S meter signal input
39
QUALITY
I
Tuner noise detect signal input (RDS model only)
40
VSS
—
Ground pin
41, 42
KEY IN0, 1
I
Key signal input
43
NC
—
Not used. (Open)
44
RC IN0
I
Rotary commander signal input
45
XKEY ON
O
Key power supply control signal output Pin
t;
(KEY ACK) active: “L” output
46
NC
—
Not used. (Open)
47, 48
MD0, 1
I
Input for operation mode designation Fixed at “H”.
49
MD2
I
Input for operation mode designation Fixed at “L”.
50
KEY ACK
I
Key acknowledge detect signal input
51
BU IN
I
Backup power supply detect signal input
52
DOOR SW
I
Door switch signal input
53
TU ATT IN
I
Tuner attenuate zero detect signal input
54
DAVN
I
RDS block data detect signal input
55
NC
—
Not used. (Open)
56
UNISI
I
Bus serial data signal input
57
UNISO
O
Bus serial data signal output
58
UNICLK
O
Bus serial clock signal output
59
FL ON
O
DC/DC converter power on signal output
