RECEPTION SIGNAL QUALITY MONITOR

To provide a reception signal quality monitor capable of accurately monitoring the quality of a reception signal while reducing the circuit size and the power consumption thereof.SOLUTION: In a receiving device RX including a reception signal quality monitor and a deserializer, a phase adjustment ci...

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Bibliographic Details
Main Authors ISHIDA TOMOHIRO, KUBO SHUNICHI
Format Patent
LanguageEnglish
Japanese
Published 30.04.2024
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Summary:To provide a reception signal quality monitor capable of accurately monitoring the quality of a reception signal while reducing the circuit size and the power consumption thereof.SOLUTION: In a receiving device RX including a reception signal quality monitor and a deserializer, a phase adjustment circuit 11 of the reception signal quality monitor can perform a phase sweep of a sampling clock signal φe of a reference sampler, within a phase range that is a multiple of a unit interval (UI) of a serial data signal. A first synchronization circuit 13A receives input of a first output signal from one sampler included in a plurality of data reception samplers, and a second output signal from a reference sampler SMe. A comparative logic circuit 15 receives input of a first output signal and a second output signal output synchronously from the first synchronization circuit 13A. The comparative logic circuit 15 outputs comparison results pertaining to the quality of the reception signal.SELECTED DRAWING: Figure 2 【課題】回路サイズ及び消費電力を低減しつつ、受信信号の品質を正確にモニタすることができる受信信号品質モニタを提供する。【解決手段】受信信号品質モニタと、デジリアライザとを備えている受信装置RXにおいて、受信信号品質モニタの位相調整回路11は、シリアルデータ信号のユニットインターバル(UI)の数倍の位相範囲内において、参照用サンプラのサンプリング・クロック信号φeの位相掃引をする。第1同期回路13Aは、複数のデータ受信用サンプラに含まれる1つのサンプラの第1出力信号及び参照用サンプラSMeの第2出力信号を入力する。比較論理回路15には、第1同期回路13Aから同期して出力された第1出力信号及び第2出力信号を入力し、比較論理回路15は、受信信号の品質に関連する比較結果を出力する。【選択図】図2
Bibliography:Application Number: JP20220166166