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5
DIGITAL
752027 SCH 1 OF 4
USB
1
PW R
USB ENA
2
USB DM
D-
USB1 -
3
USB DP
D+
4
GN D
5
CASE
6
CASE
L7
J14
90OHM
C73
R77
R78
D25
D26
1000pF
47.5
47.5
Y2
24MHz
1
3
R81
47.5k
U32
C72
12pF
1
16
XOUT
XIN
2
15
C74
S0
NC
12pF
3
14
S1
S3
4
13
S2
VDD2
5
12
VDD1
GND2
6
11
C75
C77
GND1
NC
.1µF
.1µF
7
10
NC
NC
C71
8
9
12M Hz
CLK
REF
.1µF
CLOCK GENERATOR
+3. 3VAD C
R76
100
10k
R82
C113
.1µF
C114
.1µF
C115
.1µF
C116
OPEN
C117
OPEN
U33
4
5
+8V
IN
TAB
OUT
+3. 3VAD C
___
2
ADC PS
ON/OFF
3
GND
ADJ
R80
C76
C78
.01µF
220µF
56.2k
R79
33.2k
39
+3. 3VBU
C88
1
USB AUDIO
U34
.1µF
0
MAIN MICRO
10
1
VD D
SEL
USB SW
9
2
OE
HSD 1+
USB1 +
8
3
HSD 1-
HSD 2+
7
4
HSD 2-
D+
6
5
D-
GN D
USB SW ITCH
USBA -
+1. 8VU SB
L9
+3. 3VAD C
C86
.1µF
L8
C83
.1µF
C84
100µF
R84
22.1
C81
10µF
R83
17
GN D
22.1
18
X1
19
XO
20
VD D18
21
VD D33
22
GN D
23
GN D
24
VD D33
25
U36
GN D
26
VD D33
27
GPI O0
R86
28
VD D18
10k
29
VD D33
30
GPI O1
31
GPI O2/ USB(H S/ FS)SEL
32
GPI O3
R87
10k
C85
.1µF
R90
10k
C87
.1µF
+3. 3VAD C
+3. 3VAD C+3. 3VAD C
+3. 3VAD C
U35
C80
R88
R89
.1µF
10k
10k
1
8
A0
VC C
R91
2
7
100
A1
WP
3
6
A2
SC L
4
5
GN D
SD A
R92
100
+3. 3VAD C
U37
R101
1
33.2k
Vcc
4
2
GND
6
B
1
USB
DS1:3
0 NO USB
1
+3. 3VAD C
L10
+3. 3VAD C
C91
C93
.1µF
.1µF
DA 192
DA RST
64
TEST 6
63
TEST 5
62
TEST 4
61
TEST 3
60
TEST 2
59
TEST 1
58
VD D18
57
REF CLKI N
R122
56
R98
10k
VD D33
OPEN
55
SD A_S
54
SC L_S
53
ALR CK
R99
10k
52
VD D33
R125
51
AM CLK
50
OPEN
AD AT A
49
ABC LK
U38
4
5
+8V
IN
TAB
OUT
+5VAD C
___
2
ADC PS
ON/OFF
3
GND
ADJ
R102
C94
C95
.01µF
220µF
150k
R100
49.9K
+5VAD C
+5VAD C
R107
10
C104
C105
.1µF
100µF
L34
L35
C96
.01µF
C97
.01µF
1
33
LIN+
RIN+
2
32
LIN-
RIN-
3
31
TEST 1
TEST 2
4
30
AVSS
AVSS
5
29
HPF E
MON O
6
28
U39
CKS0
TDM1
7
27
CKS1
TDM0
8
26
CKS2
TDMIN2
9
25
PD N
TDMIN1
10
24
DVD D
DVD D
11
23
DVSS
DVSS
C90
10µF
C129
10µF
LR CK
4
VDD
R103
OPEN
24. 5760
MCLK
3
OUT
SD AT A
BC LK
+5V
1
V1
2
TRANS
3
PDN
4
MCLK
5
SDTI
6
BICK
7
LRCK
8
R105
4.75k
FS0/CSN
9
FS1/CDTI
10
FS2/CCLK
11
FS3/CDTO
12
R106
4.75k
C1
+3. 3VAD C
+3. 3VAD C
C122
.1µF
1
Vcc
4
2
GND
U42
+5V
L11
100µH
OPT1
2
V C C
1
IN P U T
GN D
3
C102
.1µF
40
L36
L37
C107
.01µF
C108
.01µF
+3. 3VAD C
+3. 3VAD C
L12
Y3
1
E/ D
2
GND
+5V
U40
24
U1
R108
4.75k
23
DIF2
22
DIF1
R109
4.75k
21
DIF0
20
TXP
19
TXN
18
VSS
17
VDD
16
CKS1
15
CKS0
14
BLS
C111
13
.1µF
ANS
J15
C112
.1µF
T2
1
1
3
2
4
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