Adjusting sampling phase in a baud-rate cdr using timing skew

A method of generating timing in a receiver comprising:

• generating, by an eye sampler, a data eye from a data stream subject to equalization, the eye sampler including at least one data error sampler, at least one timing error sampler, and at least one data sampler;
• generating, with a skew clock and data recovery (CDR) circuit,
• i) a data clock to each data sampler and to each data error sampler at a baud rate of the data stream, wherein the skew CDR positions, in amplitude and phase, the data clock so as to position the data sampler about the center of the data eye, and
• ii) a timing error clock from each timing error sampler, the timing error clock skewed by a phase offset from the data clock;
• and
• adaptively adjusting phases of the data clock and the timing error clock based on samples from each data sampler and each timing error sampler based on a predetermined criterion.

A machine-readable storage medium, having encoded thereon program code, wherein, when the program code is executed by a machine, the machine implements a method for generating timing in a receiver, comprising the steps of:

• generating, by an eye sampler, a data eye from a data stream subject to equalization, the eye sampler including at least one data error sampler, at least one timing error sampler, and at least one data sampler;
• generating, with a skew clock and data recovery (CDR) circuit,
• i) a data clock to each data sampler and to each data error sampler at a baud rate of the data stream, wherein the skew CDR positions, in amplitude and phase, the data clock so as to position the data sampler about the center of the data eye, and
• ii) a timing error clock from each timing error sampler, the timing error clock skewed by a phase offset from the data clock;
• and
• adaptively adjusting phases of the data clock and the timing error clock based on samples from each data sampler and each timing error sampler based on a predetermined criterion.