System aware transmitter adaptation for high speed serial interfaces

1. A receiver for a high-speed serial interface, the receiver comprising:

a compensator that provides a selectable level of equalization to a data bitstream from a transmitter of the high-speed serial interface; and

a controller that directs the transmitter to successively select each of a plurality of tuning values for an output impedance of the transmitter, that successively selects each of the levels of equalization for each tuning value, that evaluates an indication of a performance level of the receiver for each level of equalization and each tuning value, and that selects a particular tuning value based upon the indications.

2. The receiver of claim 1 , [further comprising:

an analog-to-digital converter module that provides a receiver eye height level for the data bitstream,] wherein the performance level comprises a receiver eye height.

3. The receiver of claim 2 , wherein the particular tuning value is selected when a particular indication associated with the particular tuning value includes an equalization level that produced the highest receiver eye height.

4. The receiver of claim 2 , wherein the particular tuning value is selected when a set of indications associated with the particular tuning value had the highest average receiver eye height.

5. The receiver of claim 2 , wherein the particular tuning value is selected when a set of indications associated with the particular tuning value had the lowest number of failing receiver eye heights.

6. The receiver of claim 1 , wherein the performance level comprises bit error rate.

7. The receiver of claim 2 , wherein the particular tuning value is selected when a particular indication associated with the particular tuning value includes an equalization level that produced the lowest bit error rate.

8. The receiver of claim 2 , wherein the particular tuning value is selected when a set of indications associated with the particular tuning value had the lowest average bit error rate.

9. The receiver of claim 2 , wherein the particular tuning value is selected when a set of indications associated with the particular tuning value had the lowest number of failing bit error rates.

10. A method, comprising:

directing, by a control module of a receiver of a high-speed serial interface, a transmitter of the high-speed serial interface to successively select each of a plurality of tuning values for an output impedance of the transmitter;

successively selecting, by the control module, each of a plurality of levels of equalization provided by a compensation module of the receiver to a data bitstream from the transmitter for each of the tuning values;

evaluating, by the control module, an indication of a performance level of the receiver for each level of equalization and each tuning value; and

selecting, by the control module, a particular tuning value based upon the indications.

11. The method of claim 10 , [further comprising:

providing, by an analog-to-digital converter module of the receiver, a receiver eye height level for the data bitstream,] wherein the performance level comprises a receiver eye height.

12. The method of claim 11 , wherein in selecting the particular tuning value, the method further comprises:

selecting the particular tuning value when a particular indication associated with the particular tuning value includes an equalization level that produced the highest receiver eye height.

13. The method of claim 11 , wherein in selecting the particular tuning value, the method further comprises:

selecting the particular tuning value when a set of indications associated with the particular tuning value had the highest average receiver eye height.

14. The method of claim 11 , wherein in selecting the particular tuning value, the method further comprises:

selecting the particular tuning value when a set of indications associated with the particular tuning value had the lowest number of failing receiver eye heights.

15. The method of claim 10 , wherein the performance level comprises bit error rate.

16. The method of claim 15 , wherein in selecting the particular tuning value, the method further comprises:

selecting the particular tuning value when a particular indication associated with the particular tuning value includes an equalization level that produced the lowest bit error rate.

17. The method of claim 15 , wherein in selecting the particular tuning value, the method further comprises:

selecting the particular tuning value when a set of indications associated with the particular tuning value had the lowest average bit error rate.

18. The method of claim 15 , wherein in selecting the particular tuning value, the method further comprises:

selecting the particular tuning value when a set of indications associated with the particular tuning value had the lowest number of failing bit error rates.

19. A non-transitory computer-readable medium including code for performing a method, the method comprising:

directing, by a control module of a receiver of a high-speed serial interface, a transmitter of the high-speed serial interface to successively select each of a plurality of tuning values for an output impedance of the transmitter;

successively selecting, by the control module, each of a plurality of levels of equalization provided by a compensation module of the receiver to a data bitstream from the transmitter for each of the tuning values;

evaluating, by the control module, an indication of a performance level of the receiver for each level of equalization and each tuning value; and

selecting, by the control module, a particular tuning value based upon the indications.

20. The computer-readable medium of claim 19 , wherein the performance level comprises at least one of a receiver eye height and a bit error rate.