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