Patent ID: 6218974
Filing Date: 2001-04-17
Classification: H03M

Abstract:
Mixed-signal circuitry, operative repetitively to perform a series of processing cycles, comprising:analog circuitry operable in each said processing cycle to receive a digital signal and to produce one or more analog signals in dependence upon the received digital signal; anddigital circuitry, connected to said analog circuitry for applying such a digital signal thereto in each said processing cycle, and comprising a first circuitry portion which provides said digital signal in first processing cycles of said series and a second circuitry portion, separate from said first circuitry portion, which provides said digital signal in second processing cycles of said series different from, and interleaved with, said first processing cycles, each said circuitry portion being operable to perform a predetermined digital processing operation to produce the digital signal to be applied to the analog circuitry in a given one of said processing cycles, and said digital processing operations being performed by each said circuitry portion with a frequency that is a factor of at least two lower than the processing-cycle frequency.