Aiwa CX-BK33 Service Manual page 74

CX-BK33
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MAIN BOARD IC901 uPD703260YGF-S20-JBT-A (SYSTEM CONTROLLER)
Pin No. Pin Name
(ECHO_CE)
1
I_RDS_SIG
2 I_RDS_DATA
3 AVREF0
4 AVSS
5 O-MICS
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 O-MP3RST
TE
L 13942296513
I-RDS_CLK/
20
I-MIC
21 I-SCOR
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
I-MIACK
37
(I2C_DATA)
O-MP3STB
38
www
(I2C_CLK)
39 O-MUTE
40 O-POWER
.
41
I-POWER_DOWN
42 I-HEADPHONE
74
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I/O
Tuning signal level input from the RDS decoder (AEP, UK models)
I
Chip enable signal input from the microphone jack (Chilean, Peruvian models)
I
Serial data input from the RDS decoder Used for the AEP, UK models only
—
Reference voltage (+3.1V) input terminal
—
Ground terminal
O Chip select signal output to the MP3 decoder
I Serial data input from the tuner unit
— Power supply terminal (+3.1V)
I Stereo detection signal input from the tuner unit
I Tuner tuned status signal from the tuner unit
— Not used
— Power supply terminal (+3.1V)
—
Connected to the external capacitor
— Ground terminal
I
Main system clock input terminal (5MHz)
O
Main system clock output terminal (5MHz)
I
Reset signal input from the reset signal generator "L": reset
I Sub system clock input terminal (32.768kHz)
O
Sub system clock output terminal (32.768kHz)
O System reset signal output to the MP3 decoder
I
Clock signal input from the RDS decoder Used for the AEP, UK models only
I SCOR signal input from the digital signal processor
— Not used
I Remote control signal input from the remote control receiver
I/O I2C data input/output with the USB interface IC
I/O I2C clock signal input/output to the USB interface IC
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 detect switch signal input from the tape mechanism deck (front)
I Record protect detect switch signal input from the tape mechanism deck (rear)
I Acknowledge signal input from the USB interface IC
I Interrupt request signal input from the USB interface IC
O VBUS control signal output terminal
O Standby LED control signal output terminal
— Ground terminal
— Power supply terminal (+3.1V)
I Acknowledge signal input from the MP3 decoder
O Strobe signal output to the MP3 decoder
O Muting control signal output to power amplifier circuit
x ao
y
O Main power control signal output terminal
i
I Power down detection signal input terminal
I
Headphone detection signal input "L": headphone on
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