Table of Contents
Baseband description ............................................................................................................................................7–5
System module block diagram ........................................................................................................................7–5
Baseband functional description.....................................................................................................................7–5
Absolute maximum ratings..............................................................................................................................7–6
Phone modes of operation...............................................................................................................................7–6
Power distribution............................................................................................................................................7–8
Clocking scheme............................................................................................................................................. 7–10
Bluetooth and FM radio ................................................................................................................................. 7–13
Bluetooth ................................................................................................................................................... 7–13
FM radio...................................................................................................................................................... 7–13
Bluetooth and FM radio block diagram .................................................................................................. 7–14
WLAN ............................................................................................................................................................... 7–14
GPS interface................................................................................................................................................... 7–16
High-speed USB .............................................................................................................................................. 7–17
SIM interface ................................................................................................................................................... 7–17
Internal mass memory interface .................................................................................................................. 7–18
SD card interface ............................................................................................................................................ 7–18
TV-out interface.............................................................................................................................................. 7–19
DVB-H interface............................................................................................................................................... 7–20
Battery interface............................................................................................................................................. 7–20
Camera interfaces........................................................................................................................................... 7–21
Camera system .......................................................................................................................................... 7–21
Main camera characteristics..................................................................................................................... 7–22
Camera flash .............................................................................................................................................. 7–23
Flash LED and privacy LED......................................................................................................................... 7–24
Secondary camera characteristics ........................................................................................................... 7–25
Accelerometer............................................................................................................................................ 7–25
Audio concept................................................................................................................................................. 7–25
Audio HW architecture.............................................................................................................................. 7–25
Internal microphone................................................................................................................................. 7–26
External microphone ................................................................................................................................ 7–26
Internal earpiece....................................................................................................................................... 7–27
Internal speaker ........................................................................................................................................ 7–27
External earpiece....................................................................................................................................... 7–27
AV connector.............................................................................................................................................. 7–28
User interface.................................................................................................................................................. 7–29
Display........................................................................................................................................................ 7–29
Display and keyboard backlight .............................................................................................................. 7–30
Keyboard.................................................................................................................................................... 7–31
Slide position sensors............................................................................................................................... 7–32
RF description ...................................................................................................................................................... 7–33
Block diagram................................................................................................................................................. 7–33
Receiver (RX)................................................................................................................................................... 7–33
Transmitter (TX) ............................................................................................................................................. 7–34
Frequency mappings........................................................................................................................................... 7–35
GSM850 frequencies....................................................................................................................................... 7–35
EGSM900 frequencies..................................................................................................................................... 7–35
GSM1800 frequencies..................................................................................................................................... 7–36
GSM1900 frequencies..................................................................................................................................... 7–38
WCDMA 2100 Rx frequencies......................................................................................................................... 7–39
RM-247
System Module
Issue 1 COMPANY CONFIDENTIAL Page 7 –3
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