User Guide

SIM IF connections................................................................................................................................... 10–30
Charger connector and charging interface connections & electrical characteristics ....................... 10–31
Battery connector and interface connections & electrical characteristics ........................................ 10–32
Internal interfaces........................................................................................................................................ 10–32
Internal interfaces................................................................................................................................... 10–32
Back-up battery interface electrical characteristics............................................................................. 10–39
RF description .................................................................................................................................................... 10–39
RF introduction............................................................................................................................................. 10–39
Regulators..................................................................................................................................................... 10–39
Block diagrams ............................................................................................................................................. 10–40
Frequency plan ............................................................................................................................................. 10–40
Receiver......................................................................................................................................................... 10–41
Introduction to receiver functionality .................................................................................................. 10–41
WCDMA receiver....................................................................................................................................... 10–41
GSM receiver............................................................................................................................................. 10–42
Transmitter ................................................................................................................................................... 10–42
Introduction to transmitter functionality............................................................................................. 10–42
WCDMA transmitter................................................................................................................................. 10–43
GSM transmitter....................................................................................................................................... 10–43
Frequency synthesizers ............................................................................................................................... 10–43
Frequency mappings......................................................................................................................................... 10–45
EGSM900 frequencies................................................................................................................................... 10–45
GSM1800 frequencies................................................................................................................................... 10–46
GSM1900 frequencies................................................................................................................................... 10–47
WCDMA 2100 Rx frequencies....................................................................................................................... 10–48
WCDMA 2100 Tx frequencies ....................................................................................................................... 10–49
List of Tables
Table 20 Keyboard placement matrix in Portrait mode................................................................................ 10–19
Table 21 Audio connector pin assignments ................................................................................................... 10–27
Table 22 Charging interface connections ....................................................................................................... 10–31
Table 23 Charging IF electrical characteristics ............................................................................................... 10–31
Table 24 Battery interface connections .......................................................................................................... 10–32
Table 25 Battery IF electrical characteristics.................................................................................................. 10–32
Table 26 X4401 <-> X9000 connections.......................................................................................................... 10–35
Table 27 X4402 <-> X9001 connections.......................................................................................................... 10–36
Table 28 X4400 <-> main camera.................................................................................................................... 10–38
Table 29 Back-up battery connections............................................................................................................ 10–39
Table 30 Back-up battery electrical characteristics ....................................................................................... 10–39
List of Figures
Figure 88 Power distribution diagram ............................................................................................................. 10–9
Figure 89 Clocking scheme............................................................................................................................... 10–11
Figure 90 Bluetooth interfaces ........................................................................................................................ 10–12
Figure 91 FM radio module interface to engine............................................................................................. 10–13
Figure 92 SIM interface ..................................................................................................................................... 10–14
Figure 93 Battery pin order.............................................................................................................................. 10–16
Figure 94 Lower block sensor schematic........................................................................................................ 10–19
Figure 95 EL driver............................................................................................................................................. 10–21
Figure 96 Audio HW block diagram................................................................................................................. 10–22
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