USB Audio 2.0 Reference Design, XS1-L1 Edition Hardware Manual (1.0) 17/18
A
XC-6 USB AUDIO
SEPT 14 2009
CODEC
1
1
A3
SHEET NAME
PROJECT NAME
REV
DATE
SIZE
OF
SHEET
Copyright (c) 2009 XMOS Ltd.
C54
100N
C43
10U
+4V3A
100N
C55
+3V3
SDOUT
MDIV2
RST_N
SDIN
SCLK
LRCK
+3V3
10K
R37
C41
10U
10K
R35
2N2
C49
R36
10K
C50
2N2
R42
470R
10U
C42
C44
10U
R39
4K7
R32
3K3
C46
220P
3K3
R33
4K7
R40
470R
R41
220P
C45
10U
C39
10U
C40
C51
100N
100N
C52
47U
C48
+3V3
47K
R34
+4V3A
1R
R30
CS4270
U13
7
9
10
11
14
16
15
19
18
21
24
8
5
22
23
17
20
6
12
3
1
13
4
2
LRCK
SCLK
MDIV2
SDIN
MCLK
MDIV1
DGND
AGND
VQ
AOUTB
AOUTA
VD
VLC
MUTEB_N
MUTEA_N
FILTP
VA
AINA
AINB
RST_N
I2S/LJ_N
M0
M1
SDOUT
MCLK
100P
C47
6K8
R31
2K7
R38
100N
C53
+4V3A
TPS73001
U14
5
2
4
1
6
3
EN
OUT
IN
NR
GND
FB
2U2
C56
4U7
C38
+5V
SJ-3523-SMT
J5
3
2
1
J6
SJ-3523-SMT
3
2
1
NC
NC
MDIV PINS SELECT CLOCK RATIOS. SEE PAGE 23 OF DATASHEET.
I2S/LJ_N PULLED HIGH : I2S INTERFACE FORMAT.
M1 = 0 : NOT USED IN STAND ALONE SLAVE MODE
M0 = 0 : DE-EMPHASIS OFF
SDOUT PULLED LOW BY 47K - SLAVE MODE
CODEC DEFAULTS TO STAND ALONE MODE
4V3A LDO REGULATOR
VOUT = 1.225 * (1 + 6K8/2K7) = 4.31V
VREF = 1.225V
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