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Figure 8-3: Audio module connection schematic
MP3-BSYNC
MP3-CS#
C20
22pF
C19
22pF
R1
1M
R20
10K
R21
10K
MP3-DREQ
MP3-RST#
R2
10K
R19
10K
X2
12.288MHz
C13
1uF
VCC-3.3
GPIO
VCC-3.3
LEFT
RIGHT
GBUF
E1
10uF
E2
10uF
CN2
PHONEJACK
LEFT
RIGHT
C16
10nF
C14
47nF
C15
10nF
R27
10
R30
20
R31
20
R28
10
R29
10
R32
470
C17
3.3nF
R17
100K
R33
470
C18
3.3nF
R18
100K
L
R
R22
27
M
CN
2
XRESET
3
DGND0
4
CVDD0
5
IOVDD0
6
CVDD1
7
GPIO6
11
GPIO7
12
XDCS/BSYNC
13
IOVDD1
14
GPIO5
25
CVDD2
24
XCS
23
DGND4
22
DGND3
21
XTALI
18
XTALO
17
DGND1
16
VCO
15
DR
EQ
8
MC
P/L
N
1
1
IOVDD2
19
GPIO2
9
GPIO3
10
TX
27
RX
26
DGND2
20
SC
LK
28
SI
29
SO
30
CVDD3
31
XTEST
32
GPIO0
33
GPIO1
34
GN
D
35
GPIO4
36
AGND0
37
AVDD0
38
RIGHT
39
AGND1
40
AGND2
41
GBUF
42
AVDD1
43
RCAP
44
AVDD2
45
LEFT
46
AGND3
47
LN2
48
U2
VS1053
VCC-1.8
VCC-3.3
MP3-CS#
MP3-RST#
SCK2-RG6
MOSI2-RG8
MISO2-RG7
MOSI2-RG8
SCK2-RG6
MP3-CS#
MP3-B
SYNC
MP3-DREQ
MP3-RST#
VCC-3.3
MISO2-RG7
R5
27
R4
27
Vcap
E9
10uF
VDD
16
RE6
4
RE5
3
RB0
25
RB1
24
RB2
23
RB3
22
RB4
21
RB5
20
RE7
5
RG6/SCK2
10
RG7/SDI2
11
VSS
15
RG9
14
RG8/SDO2
12
MCLR
13
RG15
1
VDD
2
RC1
6
RC2
7
RC3
8
RC4
9
RA0/TMS
17
RE8/INT1
18
RE9/INT2
19
RB11
35
AVD
D
30
RB9
33
RB8
32
RB13
42
RB12
41
RB15
44
RB14
43
RF4
49
RF5
50
VSS
36
RB6
26
AVS
S
31
RB10
34
RB7
27
VDD
37
RA9
28
RA10/VR
EF+
29
RA1
38
RF13
39
RF12
40
RD14
47
RD15
48
VSS
45
VDD
46
RC14
74
RC13
73
RD0
72
RD11
71
RD10
70
VDD
62
VSS
65
D+/RG2
57
RF3
51
U1RX/RF2
52
VUSB
55
D-/RG3
56
OSC2
64
RD8
68
OSC1
63
RD9
69
VSS
75
RA14
66
RA15
67
RA4
60
RA5
61
SCL2/RA2
58
SDA2/RA3
59
U1TX/RF8
53
VBUS
54
RD2
77
RF0
87
RD7
84
RD6
83
RD5
82
RD4
81
RE4
100
ENVR
EG
86
Vcap/VDDcore
85
RD1
76
RE0
93
RD3
78
RF1
88
RE1
94
RE2
98
RE3
99
RG13
97
RG12
96
RG14
95
RA7
92
RA6
91
RG0
90
RG1
89
RD13
80
RD12
79
U1
PIC32MX460F512L
C11
100nF
C10
100nF
C4
100nF
C9
100nF
VCC-1.8
VCC-1.8
VCC-1.8
VCC-1.8
C12
100nF
C23
100nF
VCC-3.3
C24
100nF
VCC-3.3
C26
100nF
VCC-3.3 VCC-3.3
C27
100nF
VCC-3.3
C5
100nF
C6
100nF
C7
100nF
C8
100nF
VCC-3.3 VCC-3.3
VCC-3.3 VCC-3.3
VCC-3.3
C25
100nF
VCC-3.3
E8
10uF
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