Read Sony BMZ-K33 / CX-BK33 Service Manual online
74
CX-BK33
MAIN BOARD IC901 uPD703260YGF-S20-JBT-A (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
(ECHO_CE)
I_RDS_SIG
I
Tuning signal level input from the RDS decoder (AEP, UK models)
Chip enable signal input from the microphone jack (Chilean, Peruvian models)
Chip enable signal input from the microphone jack (Chilean, Peruvian models)
2
I_RDS_DATA
I
Serial data input from the RDS decoder Used for the AEP, UK models only
3
AVREF0
—
Reference voltage (+3.1V) input terminal
4
AVSS
—
Ground terminal
5
O-MICS
O
Chip select signal output to the MP3 decoder
6
I-DO
I
Serial data input from the tuner unit
7
AVREF1
—
Power supply terminal (+3.1V)
8
I-STEREO
I
Stereo detection signal input from the tuner unit
9
I-TUNE
I
Tuner tuned status signal from the tuner unit
10
FLMD0
—
Not used
11
VDD
—
Power supply terminal (+3.1V)
12
REGC
—
Connected to the external capacitor
13
VSS
—
Ground terminal
14
X1
I
Main system clock input terminal (5MHz)
15
X2
O
Main system clock output terminal (5MHz)
16
RESET
I
Reset signal input from the reset signal generator “L”: reset
17
XT1
I
Sub system clock input terminal (32.768kHz)
18
XT2
O
Sub system clock output terminal (32.768kHz)
19
O-MP3RST
O
System reset signal output to the MP3 decoder
20
I-RDS_CLK/
I-MIC
I
Clock signal input from the RDS decoder Used for the AEP, UK models only
21
I-SCOR
I
SCOR signal input from the digital signal processor
22
CAN'T_USE
—
Not used
23
I-RMC
I
Remote control signal input from the remote control receiver
24
I2C-USB_DATA
I/O
I2C data input/output with the USB interface IC
25
I2C-USB_CLK
I/O
I2C clock signal input/output to the USB interface IC
26
I-DECK_PLAYSW
I
PLAY switch signal input from the tape mechanism deck
27
I-DECK_ENDSW
I
END switch signal input from the tape mechanism deck
28
I-DECK_PACK
I
PACK switch signal input from the tape mechanism deck
29
I-DECK_FREC
I
Record protect detect switch signal input from the tape mechanism deck (front)
30
I-DECK_RREC
I
Record protect detect switch signal input from the tape mechanism deck (rear)
31
I-USB_ACK
I
Acknowledge signal input from the USB interface IC
32
I-USB_INT
I
Interrupt request signal input from the USB interface IC
33
O-USB_VBUS_ON
O
VBUS control signal output terminal
34
STBY
O
Standby LED control signal output terminal
35
EVSS
—
Ground terminal
36
EVDD
—
Power supply terminal (+3.1V)
37
I-MIACK
(I2C_DATA)
I
Acknowledge signal input from the MP3 decoder
38
O-MP3STB
(I2C_CLK)
O
Strobe signal output to the MP3 decoder
39
O-MUTE
O
Muting control signal output to power amplifier circuit
40
O-POWER
O
Main power control signal output terminal
41
I-POWER_DOWN
I
Power down detection signal input terminal
42
I-HEADPHONE
I
Headphone detection signal input “L”: headphone on
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