Sony CDX-GT34W Service Manual page 26

CDX-GT34W/GT340
• IC Pin Function Description
MAIN BOARD IC501 R5F3640DDA15FA (SYSTEM CONTROL)
Pin No. Pin Name
1 LCD SO
2 LCD CKO
3 NOSE SW
4 SIRCS
5 UNISO
6 UNISI
7 UNISCK
8 BYTE
9 CNVSS
10 XIN
11 XOUT
12 RESET
13 OSCOUT
14 VSS
15 OSCIN
16 VCC1
17 NMI
18 EQ SEL
19 BUIN
20 CDM ON
21 Z MUTE
22 to 27 NCO
28 BEEP
29 I2C SCK
30 I2C SIO
31 FW TXD
32 FW RXD
33 FW CLK
34 FW BUSY
35 to 40 NCO
41 EPM
42 RC IN1
43 SYSRST
44 BUSON
45 NCO
46 CE
47 to 51 NCO
52 CD ON
TESTIN
53
54 TELATT
55 ACC IN
56 ATT
57 DIAG
58 AMPSTB
59 NCO
60 NCO/BT AUDIO SEL
61 NCO
62 VCC2
63 COL SEL/NCO
64 VSS
65 ILLUMI SEL
66 DEMO SEL
67 DIM SEL
68 B OUT SEL
69 AREASEL 3
70 AREASEL 2
26
I/O
O Liquid crystal display panel serial data signal output
O Liquid crystal display panel serial clock signal output
I Front Panel detach/attach detect signal input
I Remote control signal input
O SONY BUS serial data signal output
I SONY BUS serial data signal input
O SONY BUS serial clock signal output
I Connect to ground.
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".)
O Not used. (fi xed at "L".)
I Back up power supply detection signal input
I CD mechanism deck power supply control request signal input
I Mute signal input
O Not used. (Open)
O Beep signal output to power amplifi er
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
I Flash write interface serial clock signal input
O Flash write interface serial busy signal output
O Not used. (Open)
O EPM signal output (Connect to ground.)
I Rotary commander shift key signal input
O System reset signal output
O BUS ON signal output
O Not used. (Open)
O CE signal output
O Not used. (Open)
I CD mechanism servo power supply control request signal input
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
I Power amplifi er status signal input
O Standby signal output to power regulator IC
O Not used. (Open)
O Not used. (Open)
O Not used.
— Power supply pin (+3.3V)
O Not used.
— Ground pin
I Illumination voltage setting signal input for panel
I DEMO select signal input
I Dimmer function setting signal input
I Black out setting signal input
I Destination setting pin 3
I Destination setting pin 2
Description
"L": With panel
Normally operation: "L", Flash write: "H"
Not used.
Not used.
Not used.
"H": DEMO on
"L": No dimmer
"L": No block out