US 12,335,072 B1
Signal receiving apparatus and method having parameter optimization mechanism
Xiao-Guo Zheng, Suzhou (CN)
Assigned to REALTEK SEMICONDUCTOR CORPORATION, Hsinchu (TW)
Filed by REALTEK SEMICONDUCTOR CORPORATION, Hsinchu (TW)
Filed on Dec. 19, 2023, as Appl. No. 18/544,483.
Claims priority of application No. 202310083033.6 (CN), filed on Jan. 30, 2023.
Int. Cl. H04L 25/03 (2006.01); H04L 7/00 (2006.01)
CPC H04L 25/03057 (2013.01) [H04L 7/0016 (2013.01); H04L 25/03878 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A signal receiving apparatus having parameter optimization mechanism comprising:
a signal processing circuit configured to perform equalization on a data signal according to at least one equalization parameter to generate an equalized data signal;
a clock data recovery circuit configured to perform first clock data recovery on the equalized data signal according to a primary sampling signal and a primary threshold value to generate primary recovered data, wherein the primary sampling signal has a primary sampling phase and the primary threshold value is used to determine a logic level of the equalized data signal;
a multi-sampling circuit configured to perform second clock data recovery on the equalized data signal according to a plurality of secondary sampling signals and a plurality of secondary threshold values to generate a plurality of pieces of secondary recovered data, wherein each of the plurality of secondary sampling signals has a secondary sampling phase and each of the plurality of secondary threshold values is used to determine the logic level of the equalized data signal; and
a parameter optimization circuit configured to perform comparison and statistics on the primary recovered data and the plurality pieces of secondary recovered data to generate an analysis result that at least comprises an eye diagram and a bit error rate of the equalized data signal, so as to control the signal processing circuit to adjust the at least one equalization parameter according to the analysis result and a predetermined optimized parameter requirement such that the analysis result approximates the predetermined optimized parameter requirement.