Reconfigurable cyclic shifter arrangement

Abstract

In one embodiment, a reconfigurable cyclic shifter arrangement has first and second reconfigurable cyclic shifters connected in series that are each selectively and independently configurable to operate in any one of three different modes at a time. In a first mode, the reconfigurable cyclic shifter is configured as four 4×4 cyclic shifters to cyclically shift four sets of four input values. In a second mode, the reconfigurable cyclic shifter is configured as two 8×8 cyclic shifters to cyclically shift two sets of eight input values. In a third mode, the reconfigurable cyclic shifter is configured as one 16×16 cyclic shifter to cyclically shift one set of 16 input values. Because the first and second reconfigurable cyclic shifters are independently configurable, there are nine different configurations of the reconfigurable cyclic shifter arrangement.