Bluetooth And Fm Radio; Bluetooth - Nokia RM-313 Service Manual

RM-313
System Module
BT and WLAN have their own 38.4MHz crystal oscillator that generates clock signal when clock request from
either WLAN or BT is high.
32k Sleep Clock is always powered on after startup. Sleep clock is used by RAPIDO and the application
processor for low power operation. Sleep clock is also used by GPS, FM Radio, Bluetooth and WLAN.
RAPIDOYawe and GPS the sleep clock is not buffered, for other modules the sleep clock is buffered (VIO_APE
is the buffer power supply).
SMPS Clk is a 2.4MHz clock line from RAPIDO to EM ASIC N2300 and discrete SMPS N2390. In deep sleep, when
VCTCXO is off, this signal is set to '0' state.
9.6MHz Camera Clock is generated by Golden Eye.
Figure 42 Clocking diagram

Bluetooth and FM radio

Bluetooth

Bluetooth provides a fully digital link for communication between a master unit and one or more slave units.
Data and control interface for a low power RF module is provided. This device supports Bluetooth 2.0 +EDR
standard.
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