User Guide
Table of Contents
Baseband description ............................................................................................................................................6–5
System module block diagram ........................................................................................................................6–5
Baseband functional description.....................................................................................................................6–5
Application processor .......................................................................................................................................6–6
Absolute maximum ratings..............................................................................................................................6–6
Phone modes of operation...............................................................................................................................6–6
Power distribution............................................................................................................................................6–8
Clocking scheme................................................................................................................................................6–9
Bluetooth/FM module.................................................................................................................................... 6–10
USB................................................................................................................................................................... 6–11
WLAN interface ............................................................................................................................................... 6–11
lrda interface .................................................................................................................................................. 6–12
SIM interface ................................................................................................................................................... 6–13
SD card interface ............................................................................................................................................ 6–14
GPS interface................................................................................................................................................... 6–14
Battery interface............................................................................................................................................. 6–15
Camera system ............................................................................................................................................... 6–15
Camera characteristics................................................................................................................................... 6–16
Main camera characteristics..................................................................................................................... 6–16
Flash LED..................................................................................................................................................... 6–16
Secondary camera characteristics ........................................................................................................... 6–17
User interface.................................................................................................................................................. 6–17
Display interfaces...................................................................................................................................... 6–17
Main display............................................................................................................................................... 6–18
PDA display ................................................................................................................................................ 6–20
Display buffer............................................................................................................................................. 6–20
Keyboards .................................................................................................................................................. 6–20
Display and keyboard backlights............................................................................................................. 6–21
ALS interface .............................................................................................................................................. 6–22
ASICs................................................................................................................................................................. 6–22
RAP ASIC...................................................................................................................................................... 6–22
EM ASIC N2300 ........................................................................................................................................... 6–22
EM ASIC N2200 ........................................................................................................................................... 6–22
Device memories............................................................................................................................................ 6–23
RAP memories NOR flash and SDRAM...................................................................................................... 6–23
Combo memory......................................................................................................................................... 6–23
Audio concept...................................................................................................................................................... 6–23
Audio HW architecture................................................................................................................................... 6–23
Internal microphone...................................................................................................................................... 6–24
External microphone...................................................................................................................................... 6–25
Internal earpiece............................................................................................................................................ 6–25
Internal speaker ............................................................................................................................................. 6–25
External earpiece............................................................................................................................................ 6–26
SMD microphone handling ............................................................................................................................ 6–27
Vibra circuitry ................................................................................................................................................. 6–27
System connector........................................................................................................................................... 6–27
Baseband technical specifications..................................................................................................................... 6–29
External interfaces ......................................................................................................................................... 6–29
External interfaces .................................................................................................................................... 6–29
VOUT electrical characteristics ................................................................................................................. 6–29
RA-6
System Module
Issue 1 COMPANY CONFIDENTIAL Page 6 –3
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