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Baseband technical specifications..................................................................................................................... 6–36

External interfaces ......................................................................................................................................... 6–36

SIM IF connections.......................................................................................................................................... 6–37

Charging interface connections & electrical characteristics ...................................................................... 6–37

Internal interfaces.......................................................................................................................................... 6–37

Back-up battery interface electrical characteristics.................................................................................... 6–38

RF description ...................................................................................................................................................... 6–39

Block diagram................................................................................................................................................. 6–39

Receiver (RX)................................................................................................................................................... 6–39

Transmitter (TX) ............................................................................................................................................. 6–40

Frequency mappings........................................................................................................................................... 6–41

GSM850 frequencies....................................................................................................................................... 6–41

EGSM900 frequencies..................................................................................................................................... 6–41

GSM1800 frequencies..................................................................................................................................... 6–42

GSM1900 frequencies..................................................................................................................................... 6–44

WCDMA 2100 Rx frequencies......................................................................................................................... 6–45

WCDMA 2100 Tx frequencies ......................................................................................................................... 6–46

WCDMA VIII (900) frequencies....................................................................................................................... 6–47

List of Tables

Table 14 Nominal voltages....................................................................................................................................6–9

Table 15 Interface signals .................................................................................................................................. 6–19

Table 16 Charging interface connections ......................................................................................................... 6–37

Table 17 Charging IF electrical characteristics ................................................................................................. 6–37

Table 18 Back-up battery connections.............................................................................................................. 6–38

Table 19 Back-up battery electrical characteristics ......................................................................................... 6–38

List of Figures

Figure 52 Battery pin order...................................................................................................................................6–8

Figure 53 Small (right) and wide (left) charger plugs ........................................................................................6–9

Figure 54 RM-356 clocking scheme, TBD........................................................................................................... 6–12

Figure 55 FM interface ........................................................................................................................................ 6–12

Figure 56 Micro B receptacle .............................................................................................................................. 6–13

Figure 57 SIM interface ....................................................................................................................................... 6–14

Figure 58 Accelerometer schematics................................................................................................................. 6–15

Figure 59 Block diagram of the GPS system ..................................................................................................... 6–17

Figure 60 Block diagram..................................................................................................................................... 6–19

Figure 61 Block diagram of TV out connection ................................................................................................ 6–21

Figure 62 Imaging and video subsystem block diagram ................................................................................ 6–22

Figure 63 Imaging HWA block diagram ............................................................................................................ 6–23

Figure 64 Proximity sensor and boot................................................................................................................ 6–23

Figure 65 Proximity sensor and boot location................................................................................................. 6–24

Figure 66 Proximity sensor reference design and measurement points ...................................................... 6–24

Figure 67 Touch screen controller..................................................................................................................... 6–25

Figure 68 Display block diagram ....................................................................................................................... 6–26

Figure 69 Backlight control for HW keys........................................................................................................... 6–26

Figure 70 Display backlighting system.............................................................................................................. 6–27

Figure 71 Digital Ambient Light Sensor location ............................................................................................. 6–27

Figure 72 Digital Ambient light sensor schematics ......................................................................................... 6–28

Figure 73 Audio block diagram.......................................................................................................................... 6–30

RM-356

System Module and User Interface

Page 6 –4 COMPANY CONFIDENTIAL Issue 1