Table of Contents
Introduction............................................................................................................................................................5–5
Phone description .............................................................................................................................................5–5
Energy management..............................................................................................................................................5–7
Battery and charging ........................................................................................................................................5–7
Normal and extreme voltages .........................................................................................................................5–8
Power key and system power-up....................................................................................................................5–9
Modes of operation...........................................................................................................................................5–9
USB, SIM, µSD...........................................................................................................................................................5–9
Micro USB interface ...........................................................................................................................................5–9
SIM interface ................................................................................................................................................... 5–10
µSD card interface .......................................................................................................................................... 5–10
User interface....................................................................................................................................................... 5–11
Display module............................................................................................................................................... 5–11
Keyboard ......................................................................................................................................................... 5–11
Backlight and illumination............................................................................................................................ 5–11
Audio concept...................................................................................................................................................... 5–12
AV connector........................................................................................................................................................ 5–12
RF description ...................................................................................................................................................... 5–13
Receiver (RX)................................................................................................................................................... 5–13
Transmitter (TX) ............................................................................................................................................. 5–14
Bluetooth ........................................................................................................................................................ 5–14
Technical specifications...................................................................................................................................... 5–15
Main RF characteristics for GSM band phone............................................................................................... 5–15
Environmental conditions ............................................................................................................................. 5–16
List of Tables
Table 7 Nominal voltages......................................................................................................................................5–8
Table 8 Key signal matrix ................................................................................................................................... 5–11
Table 9 AV connector pins .................................................................................................................................. 5–13
List of Figures
Figure 25 Battery pin order...................................................................................................................................5–7
Figure 26 Battery connector..................................................................................................................................5–8
Figure 27 SIM interface ....................................................................................................................................... 5–10
Figure 28 Audio block diagram.......................................................................................................................... 5–12
Figure 29 Bluetooth interface............................................................................................................................ 5–15
RM-561
System Module
Issue 1 COMPANY CONFIDENTIAL Page 5 –3
Copyright © 2009 Nokia. All rights reserved.