Table of Contents
Introduction............................................................................................................................................................8–7
Phone description .............................................................................................................................................8–7
Energy management..............................................................................................................................................8–9
Battery and charging ........................................................................................................................................8–9
Backup battery................................................................................................................................................ 8–10
Normal and extreme voltages ...................................................................................................................... 8–10
Battery drains fast troubleshooting............................................................................................................. 8–11
Power key and system power-up................................................................................................................. 8–11
Power distribution......................................................................................................................................... 8–12
Clocking scheme............................................................................................................................................. 8–13
Bluetooth and FM RDS radio module................................................................................................................. 8–14
I/O Expander ........................................................................................................................................................ 8–15
GPS interface........................................................................................................................................................ 8–16
WLAN module ...................................................................................................................................................... 8–18
FM transmitter module....................................................................................................................................... 8–18
High-speed USB.................................................................................................................................................... 8–19
CBUS interface...................................................................................................................................................... 8–20
FBUS interface...................................................................................................................................................... 8–20
ECI interface ......................................................................................................................................................... 8–20
USB charger interface.......................................................................................................................................... 8–20
SIM interface ........................................................................................................................................................ 8–21
MicroSD card interface ........................................................................................................................................ 8–22
Camera concept ................................................................................................................................................... 8–22
Camera concept.............................................................................................................................................. 8–22
User interface....................................................................................................................................................... 8–24
Resistive touch screen ................................................................................................................................... 8–24
Proximity sensor ....................................................................................................................................... 8–24
Touch screen controller............................................................................................................................ 8–25
Display ............................................................................................................................................................. 8–26
Display ............................................................................................................................................................. 8–26
Backlight and illumination............................................................................................................................ 8–27
Digital Ambient Light Sensor (ALS) .............................................................................................................. 8–30
ASICs...................................................................................................................................................................... 8–31
RAPIDOYAWE .................................................................................................................................................. 8–31
EM ASIC BETTY N2300 ..................................................................................................................................... 8–31
EM ASIC VILMA N2200 ..................................................................................................................................... 8–31
Device memories................................................................................................................................................. 8–32
Combo memory .............................................................................................................................................. 8–32
Audio concept...................................................................................................................................................... 8–32
Audio HW architecture................................................................................................................................... 8–32
Internal microphone...................................................................................................................................... 8–33
Internal earpiece............................................................................................................................................ 8–33
Internal speakers............................................................................................................................................ 8–34
Vibra circuitry ................................................................................................................................................. 8–34
Accessory AV connector ................................................................................................................................. 8–34
DA converter, headphone amplifier and FM transmitter ........................................................................... 8–36
Baseband technical specifications..................................................................................................................... 8–36
External interfaces ......................................................................................................................................... 8–36
SIM IF connections.......................................................................................................................................... 8–36
Charger connector and charging interface connections & electrical characteristics .............................. 8–37
RM-505; RM-506
System Module and User Interface
Issue 1 COMPANY CONFIDENTIAL Page 8 –3
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