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High speed DFEs with direct feedback

專利號(hào)
US10097383B1
公開日期
2018-10-09
申請(qǐng)人
International Business Machines Corporation(US NY Armonk)
發(fā)明人
John Bulzacchelli; Timothy Dickson; Mounir Meghelli; Jonathan Proesel; Guanghua Shu
IPC分類
H04L25/03
技術(shù)領(lǐng)域
slicer,dfe,decision,clk90,adder,pam4,tap,current,clock,h1p
地域: NY NY Armonk

摘要

A method and system of equalizing in a decision feedback equalizer is provided. A plurality of adder circuits receives a digital code representing a previously decided symbol from an output of a prior path of a plurality of paths. A decision-making slicer circuit receives an input voltage and a first clock signal. The plurality of adder circuits receives a second clock signal and injects an offset current proportional to the digital code representing the previously decided symbol into a current injection input of the decision-making slicer circuit, at a first edge of the second clock signal. There is a predetermined skew between the first clock and the second clock to control a timing between the injection of the offset current of the plurality of adder circuits and the initiation of a decision-making phase of the decision-making slicer circuit.

說明書

Aspects of the present application are described herein with reference to block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer readable program instructions.

These computer readable program instructions may be provided to a processor of a general-purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer readable program instructions may also be stored in a computer readable storage medium that can direct a computer, a programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer readable storage medium having instructions stored therein comprises an article of manufacture including instructions which implement aspects of the function/act specified in the flowchart and/or block diagram block or blocks.

The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable apparatus or other device to produce a computer implemented process, such that the instructions which execute on the computer, other programmable apparatus, or other device implement the functions/acts specified in the flowchart and/or block diagram block or blocks.

權(quán)利要求

1
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