Sony CDX-RA700 Service Manual page 42

CDX-RA650/RA700/RA750
IC501 MB90487APF-G-163E1 (SYSTEM CONTROL) (MAIN BOARD (3/3))
Pin No. Pin Name
1 AREASEL2
2 AREASEL1
3 AREASEL0
4 NCO
5 NOSESW
6 NCO
7 BEEP
8 DIAG
9 VOL ATT
10 FSW IN
11 VSS
12 TUATT
13 NS MASK
14 ILLUMI SEL1
15 ILLUMI SEL2
16 NCO
17 AUXIN
18 DISP RESET
19 FL ON
20 DISP ON
21, 22 NCO
23 VCC5
24 E2P SIO
25 E2P CKO
26 AMP STB
27 MASTER RX
28 MASTER TX
29 MAST IF
30 RDS ON
31 NCO
32 NCO
33 I2C CKO
34 I2C SIO
35 DAVDD
36 AVRH
37 DAVSS
38 QUALITY
39 VSM
40 KEY IN1
41 KEY IN0
42 VSS
43 RC IN0
44 SA IN
45 SA CLK
46 to 48 NCO
49 MD0
50 MD1
51 MD2
52 KEYACK
53 TUATTIN
54 BUIN
55 NCO
42
I/O
I Destination setting pin
I Destination setting pin
I Destination setting pin
O Not used. (Open)
I Front panel attachment detect signal input
O Not used. (Open)
O Beep signal output
I Power AMP status signal input
O Electronic volume attenuate control signal output
I DC-DC converter oscillator frequency count signal input
— Ground pin
O Tuner mute control signal output
O Noise mask signal output (RA650 only)
I Illumination voltage setting signal input 1
I Illumination voltage setting signal input 2
O Not used. (Open)
O AUX IN select signal output
O Display drive reset signal output
O FL power on/off control signal output
O Display power control signal output
O Not used. (Open)
— Power supply pin (+3.3 V)
I/O EEPROM bus serial data input/output
O EEPROM bus serial clock output
O Power AMP standby signal output
I Master RX signal input
O Master TX signal output
I Master IF signal input
O RDS ON signal output
O Not used. (Open)
O Not used. (Open)
O I2C bus serial clock signal output
I/O I2C bus serial data signal input/output
— A/D converter power supply pin (+3.3 V)
— A/D converter external reference power supply pin (+3.3 V)
— Ground pin
I Noise detect signal input
I S-meter voltage detect signal input
I Key signal input 1
I Key signal input 0
— Ground pin
I Rotary commander key signal input
I Spectrum analyzer signal input
O Spectrum analyzer clock signal output
O Not used. (open)
I Operation mode setting pin (Connect to VDD.)
I Operation mode setting pin (Connect to VDD.)
I Operation mode setting pin (Connect to VSS.)
I Key acknowledgment detect signal input
I Tuner mute zero cross detect signal input
I Back-up power supply detect signal input
O Not used. (Open)
Pin Description
L: AUX, H: BUS IN