User Guide
Table of Contents
Baseband description ............................................................................................................................................6–5
System module block diagram ........................................................................................................................6–5
Baseband functional description.....................................................................................................................6–5
Absolute maximum ratings..............................................................................................................................6–5
Phone modes of operation...............................................................................................................................6–6
Power distribution............................................................................................................................................6–8
Clocking scheme................................................................................................................................................6–9
Bluetooth and FM radio ................................................................................................................................. 6–10
Bluetooth ................................................................................................................................................... 6–10
FM radio...................................................................................................................................................... 6–11
Bluetooth and FM radio block diagram .................................................................................................. 6–12
WLAN ............................................................................................................................................................... 6–12
GPS interface................................................................................................................................................... 6–14
USB................................................................................................................................................................... 6–15
SIM interface ................................................................................................................................................... 6–16
SD card interface ............................................................................................................................................ 6–16
TV-out interface.............................................................................................................................................. 6–17
Battery interface............................................................................................................................................. 6–18
Camera interfaces........................................................................................................................................... 6–18
Camera system .......................................................................................................................................... 6–18
Main camera characteristics..................................................................................................................... 6–18
Camera flash .............................................................................................................................................. 6–19
Secondary camera characteristics ........................................................................................................... 6–19
Accelerometer............................................................................................................................................ 6–20
Audio concept................................................................................................................................................. 6–20
Audio HW architecture.............................................................................................................................. 6–20
Internal microphone................................................................................................................................. 6–21
External microphone ................................................................................................................................ 6–21
Internal earpiece....................................................................................................................................... 6–22
Internal speaker ........................................................................................................................................ 6–22
External earpiece....................................................................................................................................... 6–22
AV connector.............................................................................................................................................. 6–23
User interface.................................................................................................................................................. 6–24
Display........................................................................................................................................................ 6–24
Display and keyboard backlight .............................................................................................................. 6–25
Ambient Light Sensor ............................................................................................................................... 6–26
Keyboard.................................................................................................................................................... 6–26
Slide position sensors and camera cover switch ................................................................................... 6–27
RF description ...................................................................................................................................................... 6–28
Block diagram................................................................................................................................................. 6–28
Receiver (RX)................................................................................................................................................... 6–28
Transmitter (TX) ............................................................................................................................................. 6–29
Frequency mappings........................................................................................................................................... 6–30
GSM850 frequencies....................................................................................................................................... 6–30
EGSM900 frequencies..................................................................................................................................... 6–30
GSM1800 frequencies..................................................................................................................................... 6–31
GSM1900 frequencies..................................................................................................................................... 6–33
WCDMA 2100 Rx frequencies......................................................................................................................... 6–34
WCDMA 2100 Tx frequencies ......................................................................................................................... 6–35
RM-313
System Module
Issue 1 COMPANY CONFIDENTIAL Page 6 –3
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