Nokia Customer Care TF4 Technical Information
Company Confidential TFE-4/RV-1
Issue 2.0 Mar/2005 Copyright © 2005 Nokia Corporation. Page 8b-5
Company Confidential
Introduction
This document specifies the Baseband Module of the TF4 Engine Board of the TFE-4/RV-
1 (Nokia 610/616) program. The baseband module consists mainly the DCT-4 baseband
engine chipset, and the B2B System and Power/RS232 Connector. The PWB is very similar
to the NPL-1 Engine PWB. The only difference is, that the UI components, the acoustical
parts and the internal antenna are left off. The TF4 phone engine is a Dual-Mode GSM-
phone having the DCT4 generation baseband and RF circuitry.
The baseband module is developed, as part of the DCT4 common Baseband, having some
product specific blocks of it's own. It is a copy of the NPL-1 product engine. The main
difference is the B2B Connectors and the missing UI-Components.
Abbreviations
BACK_UP UEM state where UEM has backup voltage
BSI Battery Size Indicator
NO_SUPPLY UEM state where UEM has no supply what so ever
PWR_OFF UEM state where phone is off
PWRONX Signal from power on key. '1' = key pressed.
RESET UEM state where regulators are enabled
RTC UEM internal Real Time Clock
SLEEP UEM power saving state controlled by UPP
SLEEPX SLEEP control signal from UPP
UEM Universal Energy Management
UPP Universal Phone Processor
VBACK Backup battery voltage
VBAT Main battery voltage (4.2V)
VCHAR Charger input voltage
VCHAR
DET
Charger detection threshold level
V
MSTR+
, V
MSTR-
Master Reset threshold level (2.1 V / 1.9 V)
V_BU
COFF+
, V_BU
COFF-
Backup battery threshold level (3.1 V / 2.8 V)
VRTC Regulator voltage for RTC
WIS Warrant Information State
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