Study of Synchronizer

Author(s):

Shah Urja Jitendra , L.D college of engineering

Keywords:

MTBF, Synchronizer, Metastability, Metastability time constant, Technology Scaling

Abstract:

Metastabilty is commonly occurring phenomenon in digital circuits. Synchronizers are necessary to protect them from their deadly effects. Many applications have multiple clock domains. Data is transferred between these clock domains. Variability in frequencies results in data loss. Synchronizers are used in (GALS) Globally asynchronous and locally synchronous system on chip. Synchronizers determine the reliability of system. The parameters which are associated with the synchronizers are clock; data rate and timing window (setup and hold time). In practical situations, the synchronizers suffer from metastability since the data changes happen in the setup and hold timing window. Formerly they were required when there was asynchronous input. But now days they are required when on- chip data crosses clock domains.

Other Details:

Manuscript Id	:	IJSTEV2I12004
Published in	:	Volume : 2, Issue : 12
Publication Date	:	01/07/2016
Page(s)	:	105-109

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