Aiwa CX-BK7 Service Manual page 111

• MAIN BOARD IC901 uPD70F3259YGF-JBT-A (SYSTEM CONTROLLER)
Pin No. Pin Name
1 I-RDS_SIG
2 I-RDS_DATA
3 AVREF0
4 AVSS
5 O-M_ECHO
6 I-DO
7 AVREF1
8 I-STEREO
9 I-TUNE
10 FLMD0
11 VDD
12 REGC
13 VSS
14 X1
15 X2
16 RESET
17 XT1
18 XT2
19 I-DNK-12/15
20 I-RDS_CLK
21 I-MIC_DET
22 CAN'T_USE
23 I-RMC
24 I2C-USB_DATA
25 I2C-USB_CLK
26
I-DECK_PLAYSW
27 I-DECK_ENDSW
28 I-DECK_PACK
29 I-DECK_FREC
30 I-DECK_RREC
31 I-USB_ACK
32 I-USB_INT
33
O-USB_VBUS_ON
34 STBY
35 EVSS
36 EVDD
37 I2C_DATA
38 I2C_CLK
39 O-MUTE
40 O-POWER
41
I-POWER_DOWN
I/O
RDS signal input from the tuner unit (AEP and UK models)
I
Not used (Except AEP and UK models)
Serial data input from the tuner unit (AEP and UK models)
I
Not used (Except AEP and UK models)
I Reference voltage (+3.3V) input terminal (for A/D converter)
—
Ground terminal (for A/D converter)
O
Serial data latch pulse signal output to the digital echo
I Serial data input from the tuner unit
I Reference voltage (+3.3V) input terminal (for A/D converter)
I FM stereo detection signal input from the tuner unit
I Tuning detection signal input from the tuner unit
I Write permission signal input terminal Not used
— Power supply terminal (+3.3V)
—
Connected to the external capacitor
— Ground terminal
I
Main system clock input terminal (5 MHz)
O Main system clock output terminal (5 MHz)
System reset signal input from the reset signal generator "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
I
Sub system clock input terminal (32.768 kHz)
O
Sub system clock output terminal (32.768 kHz)
O Model setting terminal "L": DNK12, "H": DNK15
RDS serial data transfer clock signal input from the tuner unit (AEP and UK models)
I
Not used (Except AEP and UK models)
I
Microphone detection signal input terminal "H": microphone in
— Not used
I Remote control signal input terminal
I/O Two-way I2C data bus with the USB interface
I/O Two-way I2C clock bus with the USB interface
I Play switch signal input from the tape mechanism deck
I End switch signal input from the tape mechanism deck
I Pack switch signal input from the tape mechanism deck
I Record protect (forward direction) detect switch signal input from the tape mechanism deck
I Record protect (reverse direction) detect switch signal input from the tape mechanism deck
I Acknowledge signal input from the USB interface
I Interrupt request signal input from the USB interface
O USB on/off control signal output terminal
O
LED drive signal output of the STANDBY indicator "L": LED on
— Ground terminal
— Power supply terminal (+3.3V)
I/O Two-way I2C data bus with the DVD system processor and mechanism controller
I/O Two-way I2C clock bus with the DVD system processor and mechanism controller
O Muting on/off control signal output to the front amplifier circuit "H": muting on
O Main power on/off control signal output terminal
I
AC detection signal input terminal "L": power down
Description
CX-BK7
111