HCD-BX77DBi
41
MAIN BOARD IC301 R5F3640DDFAR (SYSTEM CONTROLLER)
Pin No. Pin Name I/O Description
1 to 3
CD BUS2 to CD
BUS0
O Serial data output to the CD-MP3 processor
4 SIRCS I SIRCS signal input from the remote control receiver
5 STBY-RELAY O Power on/off control signal output terminal “H”: power on
6 TUNER TUNED I Tuning detection signal input from the tuner (FM/AM)
7 RDS DATA I RDS data input from the tuner (FM/AM)
8 BYTE I External data bus width selection signal input terminal
9 CN VSS I Processor mode switch input terminal (for test)
10 XCIN I Sub system clock input terminal (32.768 kHz)
11 XCOUT O Sub system clock output terminal (32.768 kHz)
12 RESET I
System reset signal input from the reset signal generator “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
13 XOUT O Main system clock output terminal (5 MHz)
14 VSS - Ground terminal
15 XIN I Main system clock input terminal (5 MHz)
16 VCC - Power supply terminal (+3.3V)
17 NMI I Non-maskable interrupt signal input terminal Not used
18 RDS INT I RDS data transfer clock signal input from the tuner (FM/AM)
19 SBSY I Subcode block sync signal input from the CD-MP3 processor
20 AC CUT I AC cut on/off detection signal input terminal “L”: AC cut on
21 NC O Not used
22 AMP CLOCK O Serial data transfer clock signal output to the electrical volume
23 TA LINE MUTE O Line muting on/off control signal output terminal “H”: muting on
24 AMP DATA O Serial data output to the electrical volume
25 ST CE O Chip enable signal output to the tuner (FM/AM)
26 DATA IN/STEREO I Serial data and stereo detection signal input from the tuner (FM/AM)
27 ST CLK O Serial data transfer clock signal output to the tuner (FM/AM)
28 ST DATA OUT O Serial data output to the tuner (FM/AM)
29 IIC CLK I/O Two-way IIC clock bus terminal Not used
30 IIC DATA I/O Two-way IIC data bus terminal Not used
31 BT DOUT O Serial data output terminal Not used
32 BT DIN O Serial data input terminal Not used
33 BT CTS I Clear to send signal input terminal Not used
34 BT_RTS O Ready to send signal output terminal Not used
35 USB TXD O Serial data output terminal Not used
36 USB RXD I Serial data input terminal Not used
37 NC O Not used
38 USB RTS O Ready to send signal output terminal Not used
39 SEL A O Input selection control signal output terminal
40 INH O Input selection control signal output terminal
41 PULL DOWN O Connected to the ground
42 NC O Not used
43
BT AUDIO OUT
MUTE
O Bluetooth muting on/off control signal output terminal Not used
44 BT_AV_ ROLE O Transmission/reception mode notifi cation signal output terminal Not used
45 BT_RESET O Reset signal output terminal Not used
46 PULL UP O Connected to the power supply
47 DAB TXD O Serial data output terminal for DAB section
48 DAB RXD I Serial data input terminal for DAB section
49, 50 NC O Not used
51 DAB-POWER 1.2V O Power supply (+1.2V) on/off control signal output terminal for DAB section
52 DAB-POWER 3.3V O Power supply (+3.3V) on/off control signal output terminal for DAB section
53 STK-ON O Standby control signal output to the power amplifi er
54 to 56 NC O Not used
57 CD ON O Power on/off control signal output terminal for CD section “H”: power on
58 USB POWER O Power on/off control signal output terminal for USB section Not used
59 CD RESET O Reset signal output to the CD-MP3 processor “L”: reset
60 CD DRIVER MUTE O Muting signal output to the coil/motor driver
61 MODEL IN I Setting terminal for the model Not used
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