User Guide

CCS Technical Documentation System Module

RH-48

Transceiver RH-48

Introduction

The RH-48 is available as a CDMA single-band engine (800 MHz CDMA).

Operational Modes

There are several different operational modes: Modes have different states controlled by

the cellular SW. Some examples are: Idle State (on ACCH), Camping (on DCCH), Scan-

ning, Conversation, No Service Power Save (NSPS) previously OOR = Out of Range.

In the power-off mode, only the circuits needed for power-up are supplied.

In the idle mode, circuits are powered down and only the sleep clock is running.

In the active mode, all the circuits are supplied with power, although some parts might

be in idle state part of the time.

The charge mode is effective in parallel with all previous modes. The charge mode itself

consists of two different states, i.e. the fast charge and the maintenance mode.

The local mode is used for alignment and testing.

Baseband Module

The core part of the RH-48 baseband module consists of two ASICs — UEM and UPP —

and combo memory. The following sections describe these parts.