Cross-talk generation in a multi-lane link during lane testing

A method comprising:

• receiving a training sequence at a port, wherein the port comprises a a plurality of receiver-transmitter pairs and the training sequence is received at a receiver of a particular one of the plurality of receiver-transmitter pairs, wherein each of the plurality of receiver-transmitter pairs is to implement a respective one of a plurality of lanes in a link, the training sequence is received from a tester device on a particular one of the plurality of lanes, and the training sequence comprises a value to indicate a test of the particular receiver-transmitter pair by the tester device;
• transitioning the particular receiver-transmitter pair to a first link state in association with the test;
• and
• transitioning each one of the plurality of receiver-transmitter pairs other than the particular receiver-transmitter pair to a second link state different from the first link state in association with the test, wherein the second link state enables crosstalk to be produced on the particular lane during the test using the one or more other receiver-transmitter pairs in the second link state, and the one or more other receiver-transmitter pairs are used to implement the one or more other lanes.

A system comprising:

• a device comprising:
• one or more processor cores;
• a port comprising a plurality of receiver-transmitter pairs, wherein each of the receiver-transmitter pairs in the plurality of receiver-transmitter pairs comprises a respective receiver and transmitter and is to connect to a respective one of a plurality of bidirectional lanes;
• and
• state machine logic comprising hardware circuitry, wherein the state machine logic is to:
• detect a training sequence received by a particular receiver of a particular one of the plurality of receiver-transmitter pairs on a particular one of the plurality of bidirectional lanes from a tester device, wherein the training sequence comprises a value to indicate a test of the particular receiver-transmitter pair by a tester device;
• cause the particular receiver-transmitter pair to transition to a first link state in association with the test;
• and
• cause each one of the plurality of receiver-transmitter pairs other than the particular receiver-transmitter pair to enter a second link state different from the first link state to generate crosstalk in association with the test.