Sony CDX-GT500 Service Manual page 38

CDX-GT50W/GT500/GT500EE/GT550
IC711 MB90487APF-G-162E1 (SYSTEM CONTROL) (MAIN BOARD (3/3))
Pin No. Pin Name
1 AREASEL2
2 AREASEL1
3 AREASEL0
4 NCO
5 NOSE SW
6 NCO
7 BEEP
8 DIAG
9 VOL ATT
10 FSW IN
11 VSS
12 TUATT
13 NSMASK
14 ILLUMI SEL
15 SEL1
16 NCO
17 AUXIN
18 DISP RSET
19 FL ON
20 DISP ON
21 ATT
22 SYSRST
23 VCC5
24 EEP SIO
25 EEP CKO
26 AMPSTB
27 DISP RX
28 DISP TX
29 MAST IF
30 RDS ON
31 RE IN0
32 RE IN1
33 I2C SCK
34 I2C SIO
35 DAVDD
36 AVRH
37 DAVSS
38 QUALITY
39 VSM
40 KEYIN1
41 KEYIN0
42 VSS
43 RC IN0
44 SA IN
45 SA CKO
46 to 48 NCO
49 MD0
50 MD1
51 MD2
38
Great user manuals database on
I/O
I Destination setting pin
I Destination setting pin
I Destination setting pin
O Not used. (Open)
I Front panel open/close 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 D/D converter oscillater frequency count signal input
— Ground pin
O Tuner mute control signal output
O Noise mask signal output (AEP, UK model only)
I Illumination voltage setting signal input
O Not used in this set. (Open)
O Not used. (Open)
O AUX select signal output
O Display reset signal output
O D/D converter control signal output
O Display control signal output
O Audio mute control signal output
O System control reset signal output
— Power supply pin (+3.3 V)
I/O EEPROM bus serial data input/output
O EEPROM bus serial clock output
O Power AMP satandby signal output
I/O Display IC communication signal input/output
O Display IC communication signal output
O Display IC communication start signal output
O RDS ON signal output (AEP, UK model only)
I Rotary encoder signal input 0
I Rotary encoder signal input 1
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 (AEP, UK model only)
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.)
UserManuals.info
Pin Description
L: Panel on, H: Panel off
L: AUX, H: BUS IN
H: On
H: On