User Guide

NHL-10

CCS Technical Documentation System Module and User Interface

8 COMPANY CONFIDENTIAL ISSUE 2 01/2004

BB Description

The BB Core is based on UPP_WD2 CPU, which is a PDA version of the DCT4 UPP ASIC.

UPP_WD2 takes care of all the signal processing and operation controlling tasks of the phone,

as well as all PDA tasks.

For power management, there is one main ASIC for controlling charging and supplying power

UEMK plus some discrete power supplies. The main reset for the system is generated by the

UEMK.

The interface to the RF and audio sections is also handled by the UEMK. This ASIC provides

A/D and D/A conversion of the in-phase and quadrature receive and transmit signal paths and

also A/D and D/A conversions of received and transmitted audio signals. Data transmission be-

tween UEMK and RF and the UPP_WD2 is implemented using different serial connections

(CBUS, DBUS and RFBUS). Digital speech processing is handled by UPP_WD2 ASIC.

A real time clock function is integrated into the UEMK, which utilizes the same 32kHz-clock

source as the sleep clock. A rechargeable battery provides backup power to run the RTC when

the main battery is removed. Backup time is 20 hours.

Memory Configuration

NHL-10 uses two kinds of memories, Flash and SDRAM. These memories have their own ded-

icated bus interfaces to UPP_WD2.

Synchronous DRAM is used as the working memory. The interface is 16 bit wide data and 14

bit Address. The memory clocking speed is 104 MHz. The SDRAM size 128Mbits.

SDRAM I/O is 1.8 V and core 1.8 V supplied by the UEMK regulator VIO. All memory contents

are lost if the supply voltage is switched off.

The Multiplexed Flash Memory Interface is used to store the MCU program code and User Da-

ta. The memory interface is a burst type FLASH with multiplexed address/data bus, running at

104/3MHz.

Both Flash I/O and core voltage are 1.8 V supplied by the UEMK’s VIO.

Energy Management

The master of EM control is UEMK, and with the SW this has the main control of the system

voltages and operating modes.

Modes of Operation

NHL-10 employs several hardware and SW controlled operation modes. Main modes are de-

scribed below.

• The NO_SUPPLY mode means that the main battery is not present or its

voltage is too low (below the UEMK master reset threshold) and the

back-up battery voltage is too low.

• In the BACK_UP mode the main battery is not present or its voltage is

too low but the back-up battery has sufficient charge in it.

• In the PWR_OFF mode the main battery is present and its voltage is

over the UEMK master reset threshold. All regulators are disabled.