The I2C interface handles data transfer between GPS and the Rapido. GPS uses the CE RF system clock to
calibrate its own GPS Clk.
GPS has three clock sources:
•
16.368MHz clock from a dedicated TCXO (G6200)
•
38.4MHz reference clock from Ahneus RF ASIC
•
32.768kHz Sleepclk
The GPS module is powered from VIO 1.8V and VBAT.
Block diagram
The following block diagram shows how the GPS module is connected to the host side.
Figure 59 Block diagram of the GPS system
RM-356
System Module and User Interface
Issue 1
COMPANY CONFIDENTIAL
Page 6 –17
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