High performance interconnect physical layer
First Claim
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1. An apparatus comprising:
- a layered stack comprising physical layer logic, link layer logic, and protocol layer logic, wherein the physical layer logic comprises hardware circuitry and is to adapt a serial data link, wherein adaptation of the link is to include;
receiving a pseudorandom binary sequence (PRBS) from a remote agent, wherein the PRBS comprises an instance of a supersequence;
analyzing the PRBS to identify characteristics of the data link; and
generating metric data describing the characteristics;
wherein the physical layer logic is further to send the metric data as feedback to the remote agent.
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Abstract
A serial data link is to be adapted during initialization of the link. Adaptation of the link is to include receiving a pseudorandom binary sequence (PRBS) from a remote agent, analyzing the PRBS to identify characteristics of the data link, and generating metric data describing the characteristics.
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Citations
26 Claims
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1. An apparatus comprising:
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a layered stack comprising physical layer logic, link layer logic, and protocol layer logic, wherein the physical layer logic comprises hardware circuitry and is to adapt a serial data link, wherein adaptation of the link is to include; receiving a pseudorandom binary sequence (PRBS) from a remote agent, wherein the PRBS comprises an instance of a supersequence; analyzing the PRBS to identify characteristics of the data link; and generating metric data describing the characteristics; wherein the physical layer logic is further to send the metric data as feedback to the remote agent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An apparatus comprising:
a layered stack comprising physical layer logic, link layer logic, and protocol layer logic, wherein the physical layer logic comprises hardware circuitry and is to adapt a serial data link, adaptation of the link is to include sending a pseudorandom binary sequence (PRBS) to a remote agent, wherein the PRBS comprises an instance of a supersequence and the remote agent is to use the PRBS to identify characteristics of the data link and develop metric data describing the characteristics, wherein the physical layer logic is further to receive the metric data from the remote agent. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A method comprising:
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receiving a pseudorandom binary sequence (PRBS) from a remote agent, wherein the PRBS comprises an instance of a supersequence; analyzing the PRBS to identify characteristics of the data link; generating metric data describing the characteristics; and sending the metric data as feedback to the remote agent in association with adaptation of the data link.
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24. A system comprising:
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a first device; and a second device communicatively coupled to the first device using a serial data link, the second device including a physical layer module executed by at least one processor to; receive a pseudorandom binary sequence (PRBS) from a remote agent, wherein the PRBS comprises an instance of a supersequence; analyze the PRBS to identify characteristics of the data link; generate metric data describing the characteristics, wherein adaptation of the data link is to be based, at least in part, on the metric data; and send the metric data to the first device in association with adaptation of the data link. - View Dependent Claims (25, 26)
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Specification