PROGRAMMABLE MULTIPLEXING TECHNIQUES FOR MAPPING A CAPACITY DOMAIN INTO A TIME DOMAIN WITHIN A FRAME

摘要

- 17-PROGRAMMABLE MULTIPLEXING TECHNIQUES FOR MAPPING ACAPACITY DOMAIN INTO A TIME DOMAIN WITHIN A FRAMEAbstractMethod and apparatus are disclosed for a programmable multiplexer forconverting each of one or more input data signals, with individual data rates, into asecond higher data rate signal by mapping contiguously arbitrarily assigned CapacityTime Slots (CTSs) in a capacity domain frame to Time Slots in a Time Domainframe (TDTSs) so the TDTSs for each input signal are substantially uniformlyspread throughout the TD frame. The programmable multiplexer receives separateinput data rate signals which are clock synchronized to the multiplexer clock fromseparate synchronizers, and maps the capacity domain of the input signals to the limedomain frame format using a 2-step or 3-step digit reverse technique. Bothtechniques decompose the capacity domain address into predetermined digits frompredetermined number bases and then combine the digits to perform a similarcomputation using the number bases in reverse order. The 3-step technique uses anintermediate step of translating the initially determined values for each thepredetermined digits using a bit reversal technique.