Baseband Module; Block Diagram; Technical Summary - Nokia NSE-6 SERIES Service Manual

PAMS
Technical Documentation

Baseband Module

Block Diagram

TX/RX SIGNALS
COBBA
UI
BASEBAND

Technical Summary

The baseband module consists of four asics, CHAPS, CCONT, COBBA–
GJ and MAD2, which take care of the baseband functions of NSE–6.
The baseband is running from a 2.8V power rail, which is supplied by a
power controlling asic. In the CCONT asic there are 6 individually con-
trolled regulator outputs for RF–section and two outputs for the base-
band. In addition there is one +5V power supply output VCP for RF–part.
The CCONT contains also a SIM interface, which supports both 3V and
5V SIM–cards. A real time clock function is integrated into the CCONT,
which utilizes the same 32kHz clock supply as the sleep clock. A backup
power supply is provided for the RTC, which keeps the real time clock
running when the main battery is removed. The backup power supply is a
rechargable polyacene battery. The backup time with this battery is mini-
mum of ten minutes.
Original 08/98
RF SUPPLIES
COBBA SUPPLY
CCONT
BB SUPPLY
MAD
+
MEMORIES
System Module
PA SUPPLY 13MHz
CLK
SIM
32kHz
CLK
SLEEP CLOCK
VBAT
CHAPS
DC–jack
NSE–6
SYSTEM CLOCK
BATTERY
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