Sony CDX-GT240 - Page 28

CDX-GT24W/GT240/GT290/GT290S
28
• IC Pin Function Description
MAIN BOARD IC501 R5F3640DDA14FA (SYSTEM CONTROL)
Pin No. Pin Name I/O Description
1 LCD SO O Liquid crystal display panel serial data signal output
2 LCD CKO O Liquid crystal display panel serial clock signal output
3
NOSE SW I Front Panel detach/attach detect signal input “L”: With panel
4 SIRCS I Remote control signal input Not used.
5 UNISO O SONY BUS serial data signal output
6 UNISI I SONY BUS serial data signal input
7 UNISCK O SONY BUS serial clock signal output
8 BYTE I Connect to ground.
9 CNVSS I Flash write signal input Normally operation: “L”, Flash write: “H”
10 XIN I Low speed operation clock signal input (32.768kHz)
11 XOUT O Low speed operation clock signal output (32.768kHz)
12
RESET I Reset signal input
13 OSCOUT O High speed operation clock signal output (11.06MHz)
14 VSS — Ground pin
15 OSCIN I High speed operation clock signal input (11.06MHz)
16 VCC1 — Power supply pin (+3.3V)
17 NMI I External pull up pin (fi xed at “H”.)
18 EQ SEL O Not used. (fi xed at “L”.)
19 BUIN I Back up power supply detection signal input
20 CDM ON I CD mechanism deck power supply control request signal input
21 Z MUTE I Mute signal input
22 to 27 NCO O Not used. (Open)
28 BEEP O Beep signal output to power amplifi er
29 I2C SCK O I2C serial clock signal output
30 I2C SIO I/O I2C serial data signal input/output
31 FW TXD O Flash write interface serial data signal output
32 FW RXD I Flash write interface serial data signal input
33 FW CLK I Flash write interface serial clock signal input
34 FW BUSY O Flash write interface serial busy signal output
35 to 40 NCO O Not used. (Open)
41 EPM O EPM signal output (Connect to ground.)
42
RC IN1 I Rotary commander shift key signal input
43
SYSRST O System reset signal output
44 BUSON O BUS ON signal output
45 NCO O Not used. (Open)
46 CE O CE signal output
47 to 51 NCO O Not used. (Open)
52 CD ON I CD mechanism servo power supply control request signal input
53
TESTIN I Test mode detection signal input Not used.
54 TELATT I Telephone attenuate detection signal input Not used.
55
ACC IN I Accessory power supply detection signal input
56 ATT O Audio mute control signal output
57 DIAG I Power amplifi er status signal input
58 AMPSTB O Standby signal output to power regulator IC
59 NCO O Not used. (Open)
60 NCO/BT AUDIO SEL O Not used. (Open)
61 NCO O Not used. (Open)
62 VCC2 — Power supply pin (+3.3V)
63 COL SEL/NCO O Not used.
64 VSS — Ground pin
65 ILLUMI SEL I Illumination voltage setting signal input for panel
66 DEMO SEL I DEMO select signal input “H”: DEMO on Not used.
67 DIM SEL I Dimmer function setting signal input “L”: No dimmer
68 B OUT SEL I Black out setting signal input “L”: No block out
69 AREASEL 3 I Destination setting pin 3
70 AREASEL 2 I Destination setting pin 2