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Figure 9-3: Audio module connection schematic
VS1053
MICP
MICN
XRESET
DGND0
CVDD0
IOVDD0
CVDD1
DREQ
GPIO2
GPIO3
GPIO6
GPIO7
XDCS
IOVDD1
VCO
DGND1
XTALO
XTALI
IOVDD2
DGND2
DGND3
DGND4
XCS
CVDD2
LINE2
AGND3
LEFT
AVDD2
RCAP
AVDD1
GBUF
AGND2
AGND1
RIGHT
AVDD0
AGND0
GPIO4
GND
GPIO1
GPIO0
XTEST
CVDD3
SO
SI
SCLK
TX
RX
GPIO5
MOSI2-RG8
SCK2-RG6
VCC-3.3
R1
X2
12.288MHz
C20
22pF
C19
22pF
R2
10K
R20
10K
VCC-1.8VCC-3.3
GPIO
MP3-DCS/BSYNC
MP3-CS#
R19
10K
GPIO
VCC-3.3
MISO2-MP3 MISO2-RG7
MOSI2-RG8
SCK2-RG6
CN2
PHONEJACK
R22 27
VCC-3.3
R21
10K
C13 1uF
R28
10
R29
10
GBUF
LEFT
RIGHT
R27
10
C14
47nF
C4
100nF
VCC-1.8
C9
100nF
VCC-1.8
C10
100nF
VCC-1.8
C11
100nF
VCC-1.8
C23
100nF
VCC-3.3
C24
100nF
VCC-3.3
C26
100nF
VCC-3.3
C12
100nF
VCC-3.3
MIC5205-ADJ
U3
GND
EN
VOUT
ADJ
VCC-3.3 VCC-1.8
C29
1 5
4
2
3
2.2uF
E10
10uF
R47
220K
R46
100K
R50
0R
VCC-3.3
MISO2-RG7
R32
470
R17
100K
C17
3.3nF
R31
20
C16
10nF
LLEFT
RIGHT
R
R33
470
R18
100K
C18
3.3nF
R30
20
C15
10nF
MP3-RST#
MP3-DREQ
MP3-DCS/BSYNC
MP3-CS#
MP3-RST#
MP3-RST#
E9
10uF
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