Invention Grant
US08194792B2 Look-ahead digital loop filter for clock and data recovery 有权
先进的数字环路滤波器,用于时钟和数据恢复

Look-ahead digital loop filter for clock and data recovery
Abstract:
The present invention enhances the performance of a clock and data recovery (CDR) circuit by employing look-ahead techniques to produce a low latency timing adjustment. In one example of the invention employed in a CDR circuit having a decimation filter processing the CDR's phase detector output, the invention uses the most significant bits of the decimation filter output to quickly determine a look-ahead adjustment.
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