Integration Manual

GTM353W Integration Manual

Author:

. Claessens

Version:

4.0 Draft 2

Creation Date:

September 20, 2006

Page:

27 of 52

Option Confidential:

This document is Option Confidential - it may not be duplicated, neither distributed externally without prior and written permission of

Option NV.

3.4 Digital PCM interface

3.4.1 Background

The module shall interface towards the main processor through the USB

interface and it shall also have an audio interface (PCM) towards the

SLIC/SLAC device. Although some signalling can de done in band over the

PCM interface, the application AT-command interface over the USB is to be

used for settings, dialling out, accepting voice calls and reply messages as

RING, BUSY and DISCONNECT.

Main

Processor

USB

SLIC/

SLAC

RJ11

SPI

POTS

port

WCDMA

HSDPA

module

SIM card

holder

External

antenna

PCM

PHY

Ethernet

Connector