User Guide

Section Description
DSP subsystem based on a TMS320C55x™ DSP core, which is
responsible for intensive data computing tasks like
real-time audio and video handling on application
side, e.g. voice recording.
Internal memory subsystem composed of a single port SRAM.
Secure modules These components enable the system to support
secure applications.
Memory interfaces The memory interfaces define the system memory
access organization of application processor.
USB & modem interface These two modules enable the platform to support
a universal serial link and a dedicated modem
interface.
System components System components are group of modules
responsible for managing system interactions such
as interrupt, clock control and idle.
Peripheral subsystem The peripheral subsystem defines all the
components used to interface application processor
with specific external devices such as camera,
keyboard, display, etc.
Absolute maximum ratings
Signal Min Nom Max
Uni
t
Notes
Battery voltage (idle) -0.3 +5.4 V Battery voltage maximum value is
specified during charging is active
Battery voltage (Call) +3.2 +4.3 V Battery voltage maximum value is
specified during charging is active
Charger input voltage -0.3 +20V V
Back-Up supply voltage 0 2.5 2.7 V Maximum capacity of the backup
power supply assumed to be 4µAh.
Do not heat the RTC backup capacitor
over 260
o
C
Phone modes of operation
Mode Description
NO_SUPPLY (dead) mode means that the main battery is not present or its voltage is too low (below
N2200 master reset threshold) and that the back-up battery voltage is too low.
BACK_UP The main battery is not present or its voltage is too low but back-up battery voltage is
adequate and the 32 kHz oscillator is running (RTC is on).
PWR_OFF In this mode (warm), the main battery is present and its voltage is over N2200 master
reset threshold.
RM-10;RM-24
System Module Nokia Customer Care
Issue 1 COMPANY CONFIDENTIAL Page 9 –9
Copyright © 2006 Nokia. All rights reserved.