Adjusting parameters of a serial link
First Claim
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1. A method for adjusting parameters of a serial link, comprising:
- receiving a bit pattern sequence transmitted via a transmission channel of the serial link, sampling the bit pattern sequence at different sampling times, determining bit error rate values for corresponding sampling times, the bit error rate values resulting in a curve, and determining a quality value derived from the curve, the quality value being used for adjusting equalizer parameters of an equalizer unit.
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Abstract
Methods, systems and apparatus for adjusting parameters of a serial link is introduced. A bit pattern sequence that was transmitted via a transmission channel of the serial link is sampled at different sampling times. For the different sampling times, corresponding bit error rate values are determined. The bit error rate values result in a curve. Based on this curve, a quality value derived, that is used for adjusting parameters of an equalizer unit of the serial link.
77 Citations
21 Claims
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1. A method for adjusting parameters of a serial link, comprising:
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receiving a bit pattern sequence transmitted via a transmission channel of the serial link, sampling the bit pattern sequence at different sampling times, determining bit error rate values for corresponding sampling times, the bit error rate values resulting in a curve, and determining a quality value derived from the curve, the quality value being used for adjusting equalizer parameters of an equalizer unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A serial link, comprising
a sender, the sender comprising a bit pattern sequence generator for generating a bit pattern sequence, a transmission channel for transmitting the bit pattern sequence to a receiver, the receiver comprising a sampling unit for sampling a received bit pattern sequence, a phase rotator for defining a sampling time, an error detection unit for determining a bit error rate value for an associated sampling time, a control unit for making the phase rotator sweep the sampling time across an unit interval and causing the error detection unit to determine bit error rate values for different sampling times, an equalizer unit for adjusting the bit pattern sequence according to parameters, and an evaluation unit for determining a quality value that is used for adjusting the parameters, the quality value being derived from a curve, the curve being determined by the bit error rate values.
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18. An article of manufacture comprising a computer usable medium having computer readable program code means embodied therein for causing adjustment of parameters of a serial link, the computer readable program code means in said article of manufacture comprising computer readable program code means for causing a computer to effect the steps of:
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receiving a bit pattern sequence transmitted via a transmission channel of the serial link, sampling the bit pattern sequence at different sampling times, determining bit error rate values for corresponding sampling times, the bit error rate values resulting in a curve, and determining a quality value derived from the curve, the quality value being used for adjusting equalizer parameters of an equalizer unit. - View Dependent Claims (19, 20)
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21. A computer program product comprising a computer usable medium having computer readable program code means embodied therein for causing functions of a serial link, the computer readable program code means in said computer program product comprising computer readable program code means for causing a computer to effect:
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a sender, the sender comprising a bit pattern sequence generator for generating a bit pattern sequence, a transmission channel for transmitting the bit pattern sequence to a receiver, the receiver comprising a sampling unit for sampling a received bit pattern sequence, a phase rotator for defining a sampling time, an error detection unit for determining a bit error rate value for an associated sampling time, a control unit for making the phase rotator sweep the sampling time across an unit interval and causing the error detection unit to determine bit error rate values for different sampling times, an equalizer unit for adjusting the bit pattern sequence according to parameters, and an evaluation unit for determining a quality value that is used for adjusting the parameters, the quality value being derived from a curve, the curve being determined by the bit error rate values.
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Specification