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Table of Contents

System module block diagram .............................................................................................................................6–5

Baseband description ............................................................................................................................................6–6

Functional description......................................................................................................................................6–6

UPP .....................................................................................................................................................................6–6

Memory ..............................................................................................................................................................6–6

UEMCLite .............................................................................................................................................................6–6

External regulators............................................................................................................................................6–6

Energy management.........................................................................................................................................6–7

Modes of operation...........................................................................................................................................6–8

Voltage limits.....................................................................................................................................................6–8

Audio function description...............................................................................................................................6–8

External audio connector .................................................................................................................................6–9

HALL sensor..................................................................................................................................................... 6–10

Interfaces ............................................................................................................................................................. 6–12

RF and baseband interfaces .......................................................................................................................... 6–12

Analogue Signals............................................................................................................................................ 6–14

LCD interface ................................................................................................................................................... 6–15

Keyboard ......................................................................................................................................................... 6–15

SIM interface ................................................................................................................................................... 6–16

External signals and connections ................................................................................................................. 6–18

Battery connector........................................................................................................................................... 6–18

Battery interface............................................................................................................................................. 6–19

PWB outline .................................................................................................................................................... 6–20

RF description ...................................................................................................................................................... 6–20

Frequency band, power and multi-slot class............................................................................................... 6–20

Transmitter - general description ................................................................................................................ 6–21

Transmitter - signal processing.................................................................................................................... 6–21

Receiver - general description ...................................................................................................................... 6–21

VCXO and PLL................................................................................................................................................... 6–22

Technical specifications...................................................................................................................................... 6–22

General specifications.................................................................................................................................... 6–22

Battery endurance.......................................................................................................................................... 6–23

Environmental conditions ............................................................................................................................. 6–23

Electrical characteristics ................................................................................................................................ 6–23

List of Tables

Table 6 Voltage limits ............................................................................................................................................6–8

Table 7 Connector for External Audio Accessories ........................................................................................... 6–10

Table 8 AC and DC Characteristics of BB4.0 LiteV2 RF-Base band Digital Signals .......................................... 6–12

Table 9 AC and DC Characteristics of RF-Base band Analogue Signals ........................................................... 6–14

Table 10 SIM interface......................................................................................................................................... 6–17

Table 11 System connector ................................................................................................................................ 6–18

Table 12 Battery IF .............................................................................................................................................. 6–18

Table 13 Pin numbering of battery pack .......................................................................................................... 6–19

Table 14 Frequency bands and TX power class................................................................................................ 6–20

Table 15 Multi-slot class ..................................................................................................................................... 6–21

Table 16 Normal and extreme voltages............................................................................................................ 6–23

Table 17 Current consumption........................................................................................................................... 6–24

RM-340; RM-341

System Module

Issue 1 COMPANY CONFIDENTIAL Page 6 –3