User Guide

PAMS Technical Documentation Data Module RL7
Company Confidential TME-3
Issue 4 12/03 Nokia Corporation. Page 7
Functional Description of TME-3
Circuit Description
The Data module baseband blocks provide the MCU, DSP, external memory interface and
digital control functions in the UPP ASIC . Power supply circuitry, charging, audio pro-
cessing and RF control hard ware are in the UEM ASIC.
The purpose of the RF block is to receive and demodulate the radio frequency signal from
the base station and to transmit a modulated RF signal to the base station.
GSM Data Module RL7
The description of the RL7 data module is divided into Baseband and RF sections.
Baseband Module
TME-3 baseband supports a power saving function called "sleep mode". As the M2M sys-
tem protocol link must be active at all time, only so called "light sleep" is activated inter-
mittently. In this mode the MCU has been shut down but peripherals are active.
TME-3 powered externally and does not have battery and thus there is no need for
charger functions. The power supply is synchronous step down switching type.
Technical Summary
Main functionality of the baseband is implemented into two ASICs: UPP and UEM.