Invention Grant
- Patent Title: Low jitter and high bandwidth clock data recovery
- Patent Title (中): 低抖动和高带宽时钟数据恢复
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Application No.: US12342825Application Date: 2008-12-23
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Publication No.: US08249199B2Publication Date: 2012-08-21
- Inventor: Drew G. Doblar , Dawei Huang , Gabriel C. Risk
- Applicant: Drew G. Doblar , Dawei Huang , Gabriel C. Risk
- Applicant Address: US CA Redwood City
- Assignee: Oracle America, Inc.
- Current Assignee: Oracle America, Inc.
- Current Assignee Address: US CA Redwood City
- Agency: Osha Liang LLP
- Main IPC: H04L27/06
- IPC: H04L27/06

Abstract:
A method of implementing a low jitter and high bandwidth clock and data recovery (CDR) apparatus includes acquiring early, optimal, and late votes; determining which votes are allowed and weighted; disallowing votes not determined to as allowed; weighing votes, wherein votes that would make the CDR move to an extreme of a zero crossing are weighted less; and accumulating votes and adjusting a recovered clock phase based on the accumulated votes. A computer readable medium storing instructions to implement a low jitter and high bandwidth CDR apparatus, the instructions includes functionality to: acquiring early, optimal, and late votes; determining which votes are allowed and weighted; disallowing votes not determined to as allowed; weighing votes, wherein votes that would make the CDR move to an extreme of a zero crossing are weighted less; and accumulating votes and adjust recovered clock phase.
Public/Granted literature
- US20100158177A1 LOW JITTER AND HIGH BANDWIDTH CLOCK DATA RECOVERY Public/Granted day:2010-06-24
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