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DS56-L492-031

SmartACFL Modem

Unspecified 

SmartACFL

V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications

Detailed Features

General Modem Features

• Downloadable Architecture

− Downloadable MCU firmware from the host/DTE

− Downloadable MDP code modules from the

MCU, transparent to the host

• V.90 data modem with receive rates up to 56k bps

and send rates up to V.34 rates

− 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

− MNP 10EC™ enhanced cellular performance

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

Annex A) commands

• V.22 bis fast connect

• Analog cellular direct connect

• GSM direct connect

• V.17 fax modem with send and receive rates up to

14.4 kbps

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

− EIA/TIA 578 Class 1 and T.30 Class 1.0

commands

• V.80 synchronous access mode supports host-

controlled communication protocols with H.324

interface support

• Data/Fax/Voice call discrimination

• Hardware-based modem controller

• Worldwide operation

− US/Japan/Canada/TBR21 and other countries

− Caller ID and distinctive ring detection

− Call progress, blacklisting

• Telephony/TAM

− V.253 commands

− 8-bit µ-Law/A-Law coding (G.711)

− 8-bit/16-bit linear coding

− 8 kHz sample rate

− Concurrent DTMF, ring, and Caller ID detection

• Full-duplex speakerphone mode (S models)

− Microphone and speaker interface

− Telephone handset or headset interface

− Acoustic and line echo cancellation

− Microphone gain and muting

− Speaker volume control and muting

• PC Card interface (MCUP only) supports two

functions with programmable I/O and window size

• JTAG Boundary Scan support

• Built-in host/DTE interface with speeds up to 230.4

kbps

− Parallel 16550A UART-compatible interface

(MCU)

− Serial ITU-T V.24 (EIA/TIA-232-E) (MCU)

− PC Card (MCUP)

• Flow control and speed buffering

• Automatic format/speed sensing

• Serial sync/async data; parallel async data

• Sleep mode

• Thin packages support low profile designs (1.6 mm

max. height)

• MCU (L2702): 128-pin TQFP

• MDP (P9373): 100-pin TQFP

• LSD (20463): 32-pin TQFP

• VC (20437): 32-pin TQFP

Description

General

The SmartACFL device set, comprised of separate

microcontroller (MCU), modem data pump (MDP),

and line side device (LSD) devices, provides the

processing core for a complete modem design. The

optional Voice Codec (VC) supports voice/full-duplex

speakerphone (FDSP) operation with interfaces to a

microphone and speaker and to a telephone

handset/headset (S models). The S model can also

be ordered with an RCDSVD Speech Codec

Processor (SCP) in a 100-pin PQFP to support

DSVD.

Modem operation, including dialing, call progress,

telephone line interface, telephone handset 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 via a

parallel, serial, or PC Card interface. The OEM adds

discrete components as required by the modem

model and the application to complete the system

(Table 1). These components may include a crystal

circuit, EEPROM, DIB components, telephone line

interface, optional voice/speakerphone interface, and

optional cellular/GSM interface.

Parallel interface operation, including cellular and

GSM support, is selected by PARIF input high. Serial

interface operation is selected by PARIF input low.

Cellular operation is selected by LINE/CELL input

low. GSM operation is selected by LINE/GSM input

low.

4

Conexant

Doc. No. 100444A

Proprietary Information

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