Bit Manipulation Integrated Circuit Using Lookup Tables

The patent introduces a lookup table (LUT) as an intermediary data structure that stores pre-computed bit manipulation results. Instead of implementing complex butterfly bit shifting circuitry, the system uses the LUT to store and retrieve manipulation results, thereby reducing hardware complexity while maintaining bit manipulation capability. The LUT acts as a mediator between the processor and the bit manipulation operation.

The patent creates a copy of the input data in the lookup table and performs manipulation on the copied data rather than the original data structure. This allows the system to implement bit shuffling operations by copying data to the LUT, manipulating the copy, and retrieving results, thereby avoiding the need for complex hardware circuitry while achieving the desired bit manipulation functionality.

The patent implements a universal bit manipulation instruction that can perform multiple different bit shuffling operations through a single instruction format. The instruction includes fields for specifying source and destination bit positions, allowing the same instruction structure to handle various algorithms including WIMAX and WCDMA bit interleaving. This multi-functional approach enables the processor to efficiently execute different algorithms without requiring dedicated instructions for each specific algorithm.

The patent uses parameter-based configuration within the instruction format to support different algorithms. By varying the parameters (source bit position, destination bit position, repetition count) in the universal bit manipulation instruction, the system can adapt to execute different algorithms efficiently. This allows the same hardware implementation to be flexible enough to support new algorithms after the design phase by simply changing the instruction parameters.