Sony CDX-GT620U Service Manual page 39

• IC Pin Function Description
MAIN BOARD IC501 M3062LFGP-054FP (SYSTEM CONTROL)
Pin No. Pin Name
1 FL DATA
2 FL CLK
3 NCO
4 SIRCS
5 VBUS ON
6 DOORIND
7 NOSE SW
8 BYTE
9 CNVSS
10 XIN
11 XOUT
12 RESET
13 OSCOUT
14 VSS
15 OSCIN
16 VCC1
17 NMI
18 DAVN
19 BUIN
20 CDM ON
21 NCO
22 Z MUTE
23 EJECT OK
24 DOOR SW
25 USB OVER
26 BEEP
27 USB ON
28 SYNC OUT
29 I2C SCK
30 I2C SIO
31 TXD
32 RXD
33 SCLK
34 BUSY
35 MC TX
36 MC RX
37 NCO
38 IPCHG
39 FL ON
40 DD ON
41 EPM
42 SYSRST
43 RCIN1
44 WAKE UP
45 NCO
46 CE
47 to 49 NCO
50 IPDET
51 CD ON
52 ILL IN
53 TESTIN
54 TELATT
55 ACC IN
56 ATT
CDX-GT620U/GT627UE/GT670U/GT670US
I/O
O Fluorescent indicator tube serial data signal output
O Fluorescent indicator tube serial clock signal output
O Not used. (Open)
I Remote control signal input
I VBUS power supply control signal input
O Door indicator control signal output
I Panel detection signal input
I Connect to ground. (Pull down)
I Flash write signal input
I Low speed operation clock signal input (32.768kHz)
O Low speed operation clock signal output (32.768kHz)
I Reset signal input
O High speed operation clock signal output (11.06MHz)
— Ground pin
I High speed operation clock signal input (11.06MHz)
— Power supply pin (+3.3V)
I External pull up pin (fi xed at "H".)
I RDS data block cycle detection signal input
I Back up power supply detection signal input
I CD mechanism deck power supply control request signal input
O Not used. (Open)
I Mute signal input
O Eject ok signal output
I Front panel open/close detection signal input
I USB over current detection signal input
O Beep signal output to power amplifi er
O USB over current detection IC control signal output
O DC/DC converter oscillator frequency control signal output
O I2C serial clock signal output
I/O I2C serial data signal input/output
O Flash write interface serial data signal output
I Flash write interface serial data signal input
O Not used in this set. (Open)
O Not used in this set. (Open)
O MC-BUS communication and mechanism IC communication TX output
I MC-BUS communication and mechanism IC communication RX input
O Not used. (Open)
O Not used in this set. (Open)
O Fluorescent indicator tube power supply control signal output
O DC/DC converter power supply on/off control signal output
O Not used in this set. (Open)
O System reset signal output
I Rotary commander shift key signal input
O Mechanism IC wake up signal output
O Not used. (Open)
O Not used in this set. (Open)
O Not used. (Open)
O I-pod detection signal output
I CD mechanism servo power supply control request signal input
I Illumination signal input for auto dimmer
I Test mode detection signal input
I Telephone attenuate detection signal input
I Accessory power supply detection signal input
O Audio mute control signal output
Description
"H": VBUS on, "L": VBUS off
Normally operation: "L", Flash write: "H"
Ver. 1.1
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