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11250-11

SmartHSF™ Mobile Modem

Conexant Systems 

SmartHSF Mobile Modem Data Sheet

1.2.2 PCI Bus Host Interface Features

• 32-bit PCI Bus host interface

− Meets PCI Local Bus Specification Rev. 2.2

− PCI Bus Mastering interface

− 33 MHz PCI clock support

• Supports Power Management

− Meets PCI Bus Power Management Spec. Rev. 1.1

− ACPI Power Management Registers

− APM support

− PME# support

− Vaux/Vpci power switching support (-PCI model option)

− VauxDET support

1.2.3 SmartDAA Features

• Digital PBX line protection

• System side powered DAA operates under poor line current supply conditions

• Wake-on-ring

• Ring detection

• Line polarity reversal detection

• Line current loss detection

• Caller ID (CID) detect

• Pulse dialing

• Line-in-use detection – detects even while on-hook

• Remote hang-up detect – for efficient call termination

• Extension pickup detect

• Call waiting detection

• Meets worldwide DC VI Masks requirements (W models)

1.2.4 Applications

• Laptop, notebook, and handheld computers

• PCI Bus/Mini PCI embedded system boards

• PCI Bus/Mini PCI plug-in cards

1.3 TECHNICAL OVERVIEW

1.3.1 General Description

Modem operation, including dialing, call progress, telephone line interface, telephone handset interface, PDC High

Speed/GSM interface, voice/speakerphone interface, and host interface functions are supported and controlled through the

V.250, V.251, and V.253-compatible command set.

The modem hardware connects to the host processor via a PCI/Mini PCI bus interface. The OEM adds a crystal circuit,

EEPROM, DIB and LSD power rectifier and filter components, telephone line interface, optional telephone handset interface,

optional PDC high speed/GSM interface, optional voice/speakerphone interface, and other supporting discrete components

as required by the modem model and the application to complete the system.

1.3.2 Host Modem Software

The host modem software performs the following tasks:

1. General modem control, which includes command sets, fax Class 1, TAM, voice/speakerphone, error correction, data

compression, GSM protocol stacks, PDC high speed data protocol stacks and phone drivers, and operating system

interface functions.

2. Modem data pump signal processing, which includes data and facsimile modulation and demodulation, as well as voice

sample formatting, is performed by the host processor using Conexant SoftK56 technology.

3. SmartDAA control, which includes HSD SmartDAA Interface control, LSD configuration and control, telephone line

interface parameter control, and telephone line impedance control.

Configurations of the modem software are provided to support modem models listed in Table 1-1.

100553B

Conexant

1-5

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