11th IEEE International Symposium on Asynchronous Circuits and Systems (2005)
New York City, New York, USA
Mar. 14, 2005 to Mar. 16, 2005
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/ASYNC.2005.28
Miloš Krstić , IHP
Eckhard Grass , IHP
Christian Stahl , Humboldt Universit?
A Globally Asynchronous - Locally Synchronous (GALS) technique for application in wireless communication systems is proposed and evaluated. The GALS wrappers are based on a request-driven operation with an embedded time-out function. A formally verified GALS wrapper is deployed for the ?GALSification? of a baseband processor for WLAN. Details of the GALS partitioning, implementation and the design-flow are discussed. Furthermore, a test strategy based on built-in self-test (BIST) is suggested. The described baseband processor was fabricated and successfully tested. The GALS design is compared with a clock-gated, synchronous version. Advantages for system integration are achieved along with a 1% reduction in dynamic power consumption, a 30% reduction in peak power supply current, and 5 dB reduction in spectral noise.
C. Stahl, M. Krstić and E. Grass, "Request-Driven GALS Technique for Wireless Communication System," 11th IEEE International Symposium on Asynchronous Circuits and Systems(ASYNC), New York City, New York, USA, 2005, pp. 76-85.