CDX-GT52UM/GT470UE/GT470UM/GT472UE/GT472UM/GT474UM/GT520U/GT525U
46
• IC Pin Function Description
MAIN BOARD IC501 R5F3650ECDZ99FB (MAIN SYSTEM CONTROLLER)
Pin No. Pin Name I/O Description
1 NOSE_SW
I Front panel remove/attach detection signal input terminal “L”: Front panel is attached
2 SIRCS I Remote control signal input from the remote control signal receiver
3 UNISO - Not used
4 UNISI - Not used
5 UNISCK - Not used
6 BYTE I External data bus width select signal input Connect to VSS in this unit
7 CNVSS I Flash write signal input terminal Normally operation: “L”, Flash write: “H”
8 XIN I Low speed operation clock signal input terminal (32.768 kHz)
9 XOUT O Low speed operation clock signal output terminal (32.768 kHz)
10 RESET
I System reset signal input terminal Not used
11 OSCOUT O High speed operation clock signal output terminal (7.92 MHz)
12 VSS - Ground terminal
13 OSCIN I High speed operation clock signal input terminal (7.92 MHz)
14 VCC1 - Power supply terminal (+3.3V)
15 NMI
I Non-maskable interrupt signal input terminal Fixed at “H” in this unit
16 MEC_SELFSW
I Detection signal input from the CD section (self switch)
17 BUIN I Back up power supply detection signal input terminal “L” is input at low voltage
18 NCO - Not used
19 RC_IN1
I Rotary remote commander shift key input terminal
20 MC_RX I Serial data input from the sub system controller
21 NCO - Not used
22 MC_TX O Serial data output to the sub system controller
23 NCO - Not used
24 SYNC_OUT O Synchronize signal output to the DC/DC converter
25 SYNC_PRE5V_ON
- Not used
26 BEEP O Beep sound drive signal output to the power amplifi er
27 I2C_SCK O IIC serial clock signal output terminal
28 I2C_SIO I/O IIC two-way serial data bus terminal
29 FW_TXD O Flash writer data output terminal
30 FW_RXD I Flash writer data input terminal
31 FW_CLK I Flash writer clock signal output terminal
32 FW_BUSY O Flash writer busy signal output terminal
33 XM_TX O Serial data output terminal Not used
34 XM_RX I Serial data input terminal Not used
35 XM_POWER_EN O Power supply on/off control signal output terminal Not used
36 to 38 NCO - Not used
39 EPM O EPM signal output terminal Fixed at “L” in this unit
40 NCO - Not used
41 MEC_LOAD O Motor (Loading) signal output to the CD section
42 MEC_EJECT O Motor (Eject) signal output to the CD section
43 NCO - Not used
44 CE I Chip enable signal input terminal Fixed at “H” in this unit
45 HIT2_DATA I/O IIC two-way serial data bus with the tuner unit
46 HIT2_SCL O IIC serial clock signal output to the tuner unit
47 HIT2_RESET
O Reset signal output to the tuner unit
48 to 50 NCO - Not used
51 EN_SYS O Power supply on/off control signal output to the DC/DC converter
52 IPOD - Not used
53 NCO - Not used
54 NA - Not apply
55 ACC_IN
I Accessory power detection signal input terminal “L”: accessory power on
56 ATT O Muting on/off control signal output terminal “H”: muting on
57 DIAG I Diagnostic signal input from the power amplifi er
58 AMPSTB O Standby control signal output to the power amplifi er
59 GHOST_RST O Reset signal output to the sub system controller
60 VCC2 - Power supply terminal (+3.3V)
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