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RS56L-PCI

Host-Processed V.90/K56flex™ Modem Device Family for Mobile Applications

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Introduction

The Rockwell RS56L-PCI (SoftK56) Host-Processed

V.90/K56flex™ Modem Device supports high speed

analog data up to 56 kbps, 14.4 kbps fax, voice/TAM,

cellular phone, and speakerphone (optional) operation.

The modem operates with PSTN telephone lines as well

as analog and digital cellular phones in the U.S. and

world-wide depending upon model and installed software

drivers. The modem models are listed in Table 1.

The modem is packaged in a single 144-pin thin quad flat

pack (TQFP) that combines the PCI Bus Interface (BIF)

and Line/Voice Codec (LVC) functions. Figure 1 identifies

the major hardware signal interfaces supported by each

model.

Host modem and cellular phone driver software is

provided.

Operating with +3.3V power, this device set supports 32-

bit host applications in such cellular-based mobile designs

as laptop, notebook, and palmtop computers. The device

is easily integrated into PCI Bus-based embedded

motherboards, system boards, or plug-in cards.

Modem data pump and controller functions, traditionally

enabled using dedicated hardware, are processed in a

Pentium MMX-compatible CPU using host-signal

processing modem software.

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) and voice annotation.

The SP model also 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.

Cellular phone operation is supported by a generic

hardware interface meeting multiple standards and host

software specific to a particular cell phone type.

Reference designs are available to minimize application

design time and costs.

Features

• Data modem

− ITU-T V.90, K56flex, V.34 (33.6 kbps), V.32 bis, V.32,

V.22 bis, V.22, V.23, and V.21; Bell 212A and 103

− V.42 LAPM and MNP 2-4 error correction

− V.42 bis and MNP 5 data compression

− V.250 (ex V.25 ter) and V.251 (ex V.25 ter Annex A)

commands

• Fax modem send and receive rates up to 14.4 kbps

− ITU-T V.17, V.29, V.27 ter, and V.21 channel 2

− EIA/TIA 578 Class 1 and T.31 Class 1.0 commands

• Voice, telephony, TAM

− V.253 commands

− 8-bit µ-Law/A-Law coding (G.711)

− 8-bit/16-bit linear coding

− 8000/7200 Hz sample rate

− Music on hold from host or analog hardware input

− TAM support with concurrent DTMF detect, ring

detect, and caller ID

• V.80 synchronous access mode supports host-controlled

communication protocols

− H.324 interface support

• V.8/V.8bis and V.251 (ex V.25 ter Annex A) commands

• Data/Fax/Voice call discrimination

• Switching to/from data and fax

• Full-duplex Speakerphone (FDSP) Mode (SP model)

− External microphone and speaker interface

− Microphone gain and muting

− Speaker volume control and muting

− Adaptive acoustic and line echo cancellation

− Loop gain control, transmit and receive path AGC

• Cellular phone interface

− Hardware interface supports multiple standards

− Cell phone specific software supports different types

and models

• Multiple country support

− Call progress, blacklisting

• Single profile stored in host

• Modem and audio paths concurrent across PCI bus

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