Read Sony BMZ-K2 / CX-BK2 Service Manual online
68
CX-BK2
•
USB AUX BOARD IC700 uAC3553B (USB INTERFACE)
Pin No.
Pin Name
I/O
Description
1
XTI
I
System clock input terminal (12MHz)
2
XTO
O
System clock output terminal (12MHz)
3
AREG1
I
Connected to the external capacitor
4
AVSS_12
—
Ground terminal
5
OUTL
O
USB audio signal output terminal (L-ch)
6
OUTR
O
USB audio signal output terminal (R-ch)
7
AREG0
I
Connected to the external capacitor
8
AVDD
—
Power supply terminal (+5V)
9
DAI
I
Not used
10
WSI
I
Not used
11
CLI
I
Not used
12
INT_DATA
O
Interrupt request signal output to the USB interface IC
13
ACK
O
Acknowledge signal output to the USB interface IC
14 to 19
NC
—
Not used
20
SDA
I/O
I2C data input/output with the system controller
21
SCL
I/O
I2C clock signal input/output to the system controller
22
TRDY
I
Not used
23
VREG
I
Connected to the external capacitor
24
VBUS
I
USB connect detection signal input terminal
25
D–
I
USB data (–) input terminal
26
D+
I
USB data (+) input terminal
27
VSS
—
Ground terminal
28
VDD
—
Power supply terminal (+5V)
29
TEST
I
For test terminal
30
REST
I
Not used
31
SUSPEND
I
Not used
32
SOF
I
Not used
33
SEN
I
Not used
34
FOUTL
O
USB audio signal output terminal (L-ch)
35
FOPL
I
Not used
36
FINL
O
USB audio signal input terminal (L-ch)
37
FOUTR
O
USB audio signal output terminal (R-ch)
38
FOPR
I
Not used
39
FINR
O
USB audio signal input terminal (R-ch)
40, 41
NC
—
Not used
42
SGND
—
Ground terminal
43
SREF
I
Not used
44
NC
I
Not used
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