US 12,413,455 B2
Adaptive AFE calibration techniques
Anup P. Jose, San Jose, CA (US)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Jan. 19, 2024, as Appl. No. 18/417,982.
Claims priority of provisional application 63/537,743, filed on Sep. 11, 2023.
Prior Publication US 2025/0088395 A1, Mar. 13, 2025
Int. Cl. H04L 25/03 (2006.01)
CPC H04L 25/03057 (2013.01) [H04L 2025/03656 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A receiver for a serial data link, the receiver comprising:
an analog front end (AFE) configured to receive a serial data stream and to generate an AFE output signal based on the serial data stream;
a decision feedback equalizer (DFE) configured to receive the AFE output signal and to output deserialized data based on the AFE output signal, wherein the DFE comprises an error slicer configured to output an error signal based on a comparison between the AFE output signal and a reference voltage; and
an adaptation engine configured to perform a first adaptation process associated with the AFE, wherein the first adaptation process includes adjusting the reference voltage based on the error signal, and adjusting a gain of the AFE based on a comparison between the adjusted reference voltage and a reference voltage target.