RH56D-PCI Ver la hoja de datos (PDF) - Unspecified

Número de pieza

componentes Descripción

Fabricante

RH56D-PCI

Host-Controlled V.90/K56flex™ Modem device Family for Desktop Applications

Unspecified 

RH56D-PCI Modem Designer’s Guide

1. INTRODUCTION

1.1 SUMMARY

The Conexant RH56D-PCI V.90/K56flex™ Host Controlled Modem Device Family supports high speed analog data up to 56

kbps, 14.4 kbps fax, voice/TAM, and speakerphone (optional) operation. The modem operates with PSTN telephone lines in

the U.S. and world-wide. The modem is available with or without speakerphone support (see Table 1-1).

The modem is packaged in a single 144-pin thin quad flat pack (TQFP) that combines PCI Bus Interface (BIF) and Modem

Data Pump (MDP) functions. This modem is pin-compatible with the SoftK56-PCI modem, part number R6793 (see

SoftK56-PCI data sheet Order No. MD231).

Host modem software is also provided.

Operating with +3.3V power, this device set supports 32-bit host applications in such designs as embedded motherboards

and PCI half cards. Downloadable architecture allows updating of MDP executable code.

Figure 1-1 illustrates the general structure of the RH56D-PCI software and the interface to the RH56D-PCI hardware.

Figure 1-2 illustrates the major hardware interfaces supported by each model.

In ITU-T V.90/K56flex data mode, the modem can receive data at speeds up to 56 kbps from a digitally connected V.90 or

K56flex-compatible central site modem. A V.90/K56flex modem takes advantage of the PSTN which is primarily digital except

for the client modem to central office local loop and is ideal for applications such as remote access to an Internet Service

Provider (ISP), on-line service, or corporate site. In this mode, the modem can transmit data at speeds up to V.34 rates.

In V.34 data mode, the modem operates at line speeds up to 33.6 kbps. When applicable, error correction (V.42/MNP 2-4)

and data compression (V.42 bis/MNP 5) maximize data transfer integrity and boost average data throughput. Non-error-

correcting mode is also supported.

All models support remote audio recording and remote audio playback over the telephone line interface using A-Law, µ-Law,

or linear coding at 8000 or 7200 Hz sample rate to support applications such as digital telephone answering machine (TAM).

The SP model supports position independent, full-duplex speakerphone (FDSP) operation.

Fax Group 3 send and receive rates are supported up to 14.4 kbps with T.30 protocol.

V.80 synchronous access mode supports host-controlled communication protocols, e. g., H.324 video conferencing.

Reference design kits are available to minimize application design time and costs.

This designer's guide describes the modem hardware capabilities and identifies the supporting commands. Commands and

parameters are defined in the Commands for RH56D/RC56HCF and RH56LD Reference Manual (Order No. 1118).

1213

Conexant

1-1

Conexant Proprietary Information

Share Link: