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FlowChartofTroubleshooting
7-34
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VBT30
C853
R822
7
5
UART_RTS
UART_RX
12
UART_TX
11
9
USB_DN
USB_DP
10
VDD_IN
20
VDD_RF
4
31
18
RESET
19
SPI_CLK
22
SPI_CSB
SPI_MISO
21
SPI_MOSI
23
SPK_N
38
37
SPK_P
UART_CTS
28
27
PIO_1
32
PIO_10
PIO_11
33
PIO_2
26
24
PIO_3
PIO_4
17
2
PIO_5
PIO_9
G
N
D
35
34
MIC_N
MIC_P
36
PCM_CLK
13
PCM_IN
14
8
PCM_OUT
15
PCM_SYNC
PIO_0
1
AIO_0
AIO_1
3
30
ANT
G
N
D
61 6
G
N
D
G
N
D
25 29
G
N
D
U801
C856
C800
C819
C821
C855
C818
C810
C811
C802
1 2
ANT801
C801
R816
R823
BT_SPKOUT-
BTCX_PRI
BTCX_RXIND
BTCX_WL
BT_SPKOUT+
BT_TX
BT_RX
BT_MIC+
BT_MIC-
VBT30
R658
VBAT33
C652
3
EN1
EN2
1
7
G
N
D
VIN
2
VOUT1
5
VOUT2
6
VSS
4
U618
C649
C653 C654
GND
4
3
NC
OUT
1
VDD
2
U617
V_BAT
V_BAT
VBT_EN