公开(公告)号：US10892918B1

公开(公告)日：2021-01-12

申请号：US16523966

申请日：2019-07-26

申请人： Xilinx, Inc.

发明人： Haritha Eachempatti ,  Hsung Jai Im

IPC分类号： H04L25/03

摘要： A speculative decision feedback equalizer with split unroll multiplexers is provided. The speculative decision feedback equalizer splits an unroll multiplexer into two multiplexers. One split multiplexer provides a data path for the unroll selection signal, and the other split multiplexer provides a separate data path for the summer differential tap. In this way, the loading of an input stage of the summer circuit and the loading from the h1 unrolling loop are decoupled, allowing each split multiplexer to be configured according to a specific timing requirement along a respective data path. Thus, timing performance of the speculative decision feedback equalizer is improved.