Sony CX-BK1 Service Manual page 75

• MAIN BOARD IC901 uPD703260YGF-S04-JBT-A (SYSTEM CONTROLLER)
Pin No. Pin Name
1 RDS_SIG
2 RDS_DATA
3 AVREF0
4 AVSS
5 MICS
6 DO
7 AVREF1
8 STEREO
9 TUNE
10 FLMD0
11 VDD
12 REGC
13 VSS
14 X1
15 X2
16 RESET
17 XT1
18 XT2
19 MP3RST
20 RDS_CLK
21 SCOR
22 CAN'T_USE
23 RMC
24 USB_DATA
25 USB_CLK
26 DECK_PLAYSW
27 DECK_ENDSW
28 DECK_PACK
29 DECK_FREC
30 DECK_RREC
31 USB_ACK
32 USB_INT
33 USB_VBUS_ON
34 STBY
35 EVSS
36 EVDD
37 MIACK
38 MP3STB
39 MUTE
40 POWER
41 POWER_DOWN
42 HEADPHONE
43 SHIFT_CLK
I/O
I
Tuning signal level input from the RDS decoder Used for the AEP, UK models
I Serial data input from the RDS decoder Used for the AEP, UK models
—
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
Clock signal input from the RDS decoder
I
Microphone detect signal input terminal
Used for the AEP, UK, Chilean, Peruvian models
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
O Main power control signal output terminal
I Power down detection signal input terminal
I
Headphone detection signal input "L": headphone on
O Serial data transfer clock signal output to the shift register
Description
CX-BK1
75