Nokia N800 - Internet Tablet - OS 2007, Service Manual, Page: 183 / 218

Table of Contents
Baseband description ............................................................................................................................................ 9–5
System module block diagram ........................................................................................................................ 9–5
Baseband functional description ..................................................................................................................... 9–5
Application processor ....................................................................................................................................... 9–5
Absolute maximum ratings .............................................................................................................................. 9–6
Device modes of operation .............................................................................................................................. 9–6
Power distribution ............................................................................................................................................ 9–7
Clocking scheme and controlling signals ........................................................................................................ 9–7
Interfaces ........................................................................................................................................................... 9–7
Bluetooth ...................................................................................................................................................... 9–7
WLAN ............................................................................................................................................................. 9–8
HS-USB ........................................................................................................................................................... 9–8
Memorycards ................................................................................................................................................ 9–8
Battery interface ........................................................................................................................................... 9–8
User interface ..................................................................................................................................................... 9–8
Main display .................................................................................................................................................. 9–8
HW keys ......................................................................................................................................................... 9–9
Indication LEDs ............................................................................................................................................. 9–9
Camera ....................................................................................................................................................... 9–10
ASICs ................................................................................................................................................................. 9–10
Application processor D4800 ................................................................................................................... 9–10
EM ASIC N4200 ........................................................................................................................................... 9–10
EM ASIC D1420 ........................................................................................................................................... 9–10
EM ASIC N1310 ........................................................................................................................................... 9–10
ASICS N5350 and N5351 ........................................................................................................................... 9–10
Device memories ............................................................................................................................................ 9–11
Memory package ....................................................................................................................................... 9–11
APE memory (POP3) .................................................................................................................................. 9–11
Audio concept ...................................................................................................................................................... 9–11
Audio concept ................................................................................................................................................. 9–11
Internal speakers ............................................................................................................................................ 9–11
Internal microphone ...................................................................................................................................... 9–12
External speakers ........................................................................................................................................... 9–12
External microphone ...................................................................................................................................... 9–13
Nokia AV connector ........................................................................................................................................ 9–13
Sensors and switches .......................................................................................................................................... 9–14
Battery cover switch ...................................................................................................................................... 9–14
SD lid switch .................................................................................................................................................... 9–14
Camera position sensors ............................................................................................................................... 9–14
Baseband technical specifications ..................................................................................................................... 9–14
External interfaces ......................................................................................................................................... 9–14
Internal interfaces .......................................................................................................................................... 9–16
RF description ...................................................................................................................................................... 9–18
WLAN RF description ...................................................................................................................................... 9–18
WLAN TX description ..................................................................................................................................... 9–20
List of Tables
Table 15 Pin/signal orders .................................................................................................................................. 9–14
Table 16 External interfaces ............................................................................................................................... 9–14
RX-34
System Module
Issue 2 COMPANY CONFIDENTIAL Page 9 –3
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