公开(公告)号：US12143251B2

公开(公告)日：2024-11-12

申请号：US18012289

申请日：2021-05-25

Applicant: SANECHIPS TECHNOLOGY CO., LTD

Inventor： Mingjie Kong ,  Xiongjie Shen

IPC: H04L25/49 ,  H04L25/03

Abstract: Provided are a multilevel output drive circuit and method. The circuit includes: a signal selection module, configured to selectively output a signal to be transmitted of a corresponding channel according to an external input signal; a weight generation module, configured to generate weight data according to a weight of an output eye diagram, wherein the weight of the output eye diagram and the weight data are multi-bit binary data; a coefficient transfer module, configured to perform weight control on the signal to be transmitted according to the weight data and generate data containing weight information; and a weight adjustment and data outputting module, configured to perform weight adjustment and pulse amplitude modulation calculation according to weight adjustment control data, the signal to be transmitted and the data containing weight information, and generate PAM4 data.