Patent ID: 7880507
Filing Date: 2011-02-01
Classification: H03K

Abstract:
1. A circular edge detector on an integrated circuit comprising: lead edge detector cells (EDCs), each of the lead edge detector cells having an EDC data input, an EDC configuration input, an EDC input, and an EDC output; edge detector series (EDSs), each of the edge detector series having an EDS input and an EDS output; and a first edge detector series (EDS) having a first EDS data input and a first EDS data output; wherein the EDC output of each of the lead edge detector cells is operably connected to a next of the edge detector series at the EDS input of the next of the edge detector series; the EDS output of each of the edge detector series is operably connected to a next of the lead edge detector cells at the EDC input of the next of the lead edge detector cells; and the EDS output of the last of a last edge detector series is operably connected to the EDC input of a first lead edge detector cell.