Method and apparatus for monitoring a data eye in a clock and data recovery system
OwnerMohammad Mobin, Gregory Sheets +1inventors
InventorsMohammad Mobin, Gregory Sheets, Lane Smith
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Abstract
Methods and apparatus are provided for monitoring a data eye associated with a received signal. A plurality of samples of the received signal are obtained for each unit interval based on a clock recovered from the received signal, to obtain an estimate of the data eye. According to one aspect of the invention, the samples are obtained substantially simultaneous to a decoding of the received signal. The collected data eye samples can optionally be processed, for example, to collect statistics on the received signal or to determine a distribution of the received signal.
Claims23
A method for monitoring a data eye associated with a received signal, comprising:
- obtaining a plurality of samples of said received signal for each unit interval based on a clock recovered from said received signal.
A circuit for monitoring a data eye associated with a received signal, comprising:
- a plurality of latches for obtaining a plurality of samples of said received signal for each unit interval based on a clock recovered from said received signal.
A circuit for monitoring a data eye associated with a received signal, comprising:
- a sample and hold circuit for obtaining a plurality of samples of said received signal for each unit interval based on a clock recovered from said received signal.
An integrated circuit, comprising:
- a circuit for monitoring a data eye associated with a received signal, comprising means for obtaining a plurality of samples of said received signal for each unit interval based on a clock recovered from said received signal.
Dependencies are inferred from the claim text.