Patent Number: 8,819,398

Title: Variable length stages in a pipeline

Abstract: A circuit having a pipeline and a configuration circuit. The pipeline generally has multiple stages linked in series by registers. The registers may be governed by a clock signal having a first frequency in a first mode and a second frequency in a second mode. The second frequency may be slower than the first frequency. Each stage may have a respective one of multiple first latencies each shorter than a first period of the first frequency. The configuration circuit may be disposed in the pipeline. The configuration circuit generally bypassing selectively a particular register while in the second mode to form a combined stage. The combined stage may (i) comprise a first of the stages adjoining the particular register and a second of the stages adjoining the particular register and (ii) have a second latency shorter than a second period of the second frequency.

Inventors: Orbach; Yair (Shomron, IL)

Assignee: LSI Corporation

International Classification: G06F 15/00 (20060101); G06F 7/38 (20060101); G06F 9/00 (20060101); G06F 9/44 (20060101)

Expiration Date: 8/26/12018