Digitally calibrated high speed clock distribution

An electronic circuit for distributing a clock signal to several clock destinations includes phase adjustment circuits for adjusting phase shifts of the clock at the respective one of the clock destinations responsive to a respective DC voltage feedback signal receive from the respective one of the...

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Bibliographische Detailangaben
Hauptverfasser: HIRATA ERICK M, LINDER LLOYD F
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:An electronic circuit for distributing a clock signal to several clock destinations includes phase adjustment circuits for adjusting phase shifts of the clock at the respective one of the clock destinations responsive to a respective DC voltage feedback signal receive from the respective one of the clock destinations; phase detectors for detecting a phase shift of the clock signal at the respective one of the clock destinations according to a nearest neighbor clock destination; loop filters for generating and transmitting respective DC voltage feedback signals; current sources, each configured to receive the respective DC voltage feedback signal and output a respective current to a respective one of the phase adjustment circuits according to said respective DC voltage feedback signals to adjust the phase shift of the clock signal for the respective one of the clock destinations.