Efficient data-directed scrambler for noise-shaping mixed-signal converters

Efficient data-directed scrambler for noise-shaping mixed-signal converters

An efficient data-directed scrambler is provided for processing digital signals having an unequally-weighted code. The data-directed scrambler includes inputs for receiving unequally-weighted bits of an input signal, outputs for supplying N scrambled bits of an output signal, and two or more scrambl...

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Hauptverfasser: MAR DOUGLAS J, ADAMS ROBERT W, YEUNG M. K. STEPHEN
Format: Patent
Sprache:eng
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BASIC ELECTRONIC CIRCUITRY
CODE CONVERSION IN GENERAL
CODING
DECODING
ELECTRICITY
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creator MAR DOUGLAS J
ADAMS ROBERT W
YEUNG M. K. STEPHEN
description An efficient data-directed scrambler is provided for processing digital signals having an unequally-weighted code. The data-directed scrambler includes inputs for receiving unequally-weighted bits of an input signal, outputs for supplying N scrambled bits of an output signal, and two or more scrambler columns connected in series between the inputs and the outputs. One or more of the scrambler columns includes a swapper cell and a digital fanout. Least significant bits in the unequally-weighted code are input to a swapper cell, and higher order bits in the unequally-weighted code are input to respective digital fanouts. In the other embodiments, an efficient data-directed scrambler is provided for processing digital signals having an equally-weighted code.
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subjects BASIC ELECTRONIC CIRCUITRY
CODE CONVERSION IN GENERAL
CODING
DECODING
ELECTRICITY
title Efficient data-directed scrambler for noise-shaping mixed-signal converters
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