Title :
Asynchronous inputs and flip-flop metastability in the CLAS trigger at CEBAF
Author :
Doughty, David C., Jr. ; Lemon, Stephan ; Bonneau, Peter
Author_Institution :
Christopher Newport Univ., Newport News, VA, USA
fDate :
8/1/1993 12:00:00 AM
Abstract :
The impact of flip-flop metastability on the pipelined trigger of the CEBAF Large Acceptance Spectrometer (CLAS) detector at the Continuous Electron Beam Accelerator Facility (CEBAF) is studied. It is found that the newest emitter-coupled logic (ECL) flip-flops (ECLinPS) are much faster than older families (10 H) at resolving the metastable condition. This will allow their use in systems with asynchronous inputs without an extra stage of synchronizing flip-flops
Keywords :
computerised instrumentation; flip-flops; nuclear electronics; trigger circuits; CEBAF; CEBAF Large Acceptance Spectrometer; Continuous Electron Beam Accelerator Facility; emitter-coupled logic; flip-flop metastability; metastable condition; pipelined trigger; Clocks; Data acquisition; Detectors; Electron beams; Energy resolution; Flip-flops; Linear accelerators; Metastasis; Pipelines; Spectroscopy;
Journal_Title :
Nuclear Science, IEEE Transactions on
