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Huawei G510 - Page 80

Huawei G510
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G510 Maintenance Manual V1.0
INTERNAL
2013-01-28
Page 80 of 96
Figure 9-42 Circuit diagram of the FM and Bluetooth
Analysis
The G510 integrates Bluetooth and the FM to provide functions, which are implemented by
Qualcomm's WCN2243.
Bluetooth uses an independent antenna and the FM uses the left- and right-audio channels as
the antennas.
The MSM8225 provides the PCM and UART interfaces for directly connecting to the PCM
and UART interfaces of the Bluetooth module. Table 9-5 lists the signals provided by the
MSM8825 on the PCM and UART interfaces.
Table 9-5 Signals on the PCM and UART interfaces
Signal Provided by the
MSM8225
Signal Line
Definition
GPIO_44
UART1_CTS_N
Ready-to-receive signal sent from the
MSM8225
GPIO_43
UART1_RFR_N
Clear-to-send signal received by the
MSM8225
GPIO_46
UART1_TX
Transmission signal
GPIO_45
UART1_RX
Reception signal
GPIO_69
AUX_PCM_DIN
PCM input
GPIO_68
AUX_PCM_DOUT
PCM output
GPIO_70
AUX_PCM_SYNC
PCM synchronization

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