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AD6439 - Discrete Multitone (DMT) Coprocessor

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General Description

The AD6439 Discrete Multitone (DMT) Coprocessor is part of Analog Devices ADSL solution, a series of flexible, standardsbased chipsets for creating high performance ADSL and SDSL modems that implement a superset of standard Category 2 functionality.

A high performance alternative to the AD6436 DMT Coprocessor, the AD6439 meets the functionality requirements of ANSI T1.413 Category 2 (trellis coding, echo cancellation), but is considerably more versatile.

It implements both transmit and receive paths (trellis coding/decoding, IFFT/FFT, filtering and echo cancellation).

Overview

a Discrete Multitone (DMT) Coprocessor for ADSL Chipsets AD6439.

Key Features

  • Component in Analog Devices’ AD20msp918 ADSL Chipset Designed to ANSI T1.413 Issue 2/ETSI TR238/ITU G.992.1 and G.992.2 Higher Performance Improved Data Rates or Longer Reach Suitable for CO or Residence (ATU-R and ATU-C) Performs All DMT Functions and Operations Trellis Coding Echo Cancellation Symmetric Transforms (512 Point) Flexible Allocation of Tones Upstream/Downstream Supports Symmetric Services (SDSL) Increased Upstream (e. g. , 1 Mbps) Supports ADSL Over ISDN (Shifted U/S) Strict Filters.

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