Figure 21 Bluetooth interface
The BTHFM module is powered by VBAT and the regulated voltage VIO. For audio applications the Bluetooth
has a PCM data bus. In addition an UART (universal asynchronous receiver/transmitter) is used for data
communication and controls.
GPS module
The device supports GPSCost4.0 release. GPS module is connected to cellular engine via I2C interface and
GenIO control signals. GPS clock configuration includes dedicated GPS TCXO and reference clock from Vapaus.
RM-750
System Module
Page 6 – 16 COMPANY CONFIDENTIAL Issue 1
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