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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">trudyniisi</journal-id><journal-title-group><journal-title xml:lang="ru">Труды НИИСИ</journal-title><trans-title-group xml:lang="en"><trans-title>SRISA Proceedings</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2225-7349</issn><issn pub-type="epub">3033-6422</issn><publisher><publisher-name>НИЦ «КУРЧАТОВСКИЙ ИНСТИТУТ» - НИИСИ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.25682/NIISI.2026.1.0007</article-id><article-id custom-type="elpub" pub-id-type="custom">trudyniisi-138</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ВЫЧИСЛИТЕЛЬНЫЕ СИСТЕМЫ И ИХ ЭЛЕМЕНТЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>COMPUTING SYSTEMS AND THEIR COMPONENTS</subject></subj-group></article-categories><title-group><article-title>Бесшовная архитектура узла динамической фазовой перестройки тактовых трактов в высокоскоростных интерфейсах физического уровня DDR</article-title><trans-title-group xml:lang="en"><trans-title>Glitch-free dynamic phase retuning unit in high-speed DDR PHY clocking circuits</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Денщиков</surname><given-names>Т. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Denschikov</surname><given-names>T. R.</given-names></name></name-alternatives><email xlink:type="simple">denschikov@cs.niisi.ras.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Петров</surname><given-names>К. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Petrov</surname><given-names>K. A.</given-names></name></name-alternatives><email xlink:type="simple">petrovk@cs.niisi.ras.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>НИЦ «Курчатовский институт» - НИИСИ, Москва</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>16</day><month>05</month><year>2026</year></pub-date><volume>16</volume><issue>1</issue><issue-title>SRISA PROCEEDINGS</issue-title><fpage>42</fpage><lpage>48</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Денщиков Т.Р., Петров К.А., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Денщиков Т.Р., Петров К.А.</copyright-holder><copyright-holder xml:lang="en">Denschikov T.R., Petrov K.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.t-niisi.ru/jour/article/view/138">https://www.t-niisi.ru/jour/article/view/138</self-uri><abstract><p>В работе предложена модификация архитектуры узла фазовой подстройки тактового сигнала в составе цифрового интерфейсного блока физического уровня DDR (DDR PHY), предназначенного для формирования и подстройки тактовых сигналов в передающем и принимающем трактах. Актуальность задачи определяется ростом требований к устойчивости временных параметров высокоскоростных интерфейсов и необходимостью выполнять калибровку фазовых соотношений без остановки функционирования тракта. В исходной архитектуре изменение задержки связано с процедурой обновления управляемой линии задержки и должно сопровождаться приостановкой работы соответствующего участка тактового пути. Предлагаемая архитектурная модификация переводит узел фазовой подстройки тактового сигнала к схеме с теневым контуром перестройки, в которой новая величина задержки подготавливается в неактивной ветви, а переключение на обновлённую конфигурацию выполняется через глитч-безопасную логику управления тактированием. Такое решение позволяет исключить остановку тактового сигнала, уменьшить риск нарушения синхронизации в и обеспечить бесшовную перестройку фазы в процессе функционирования блока.</p></abstract><trans-abstract xml:lang="en"><p>This paper discusses a modification of the Clock Phase Adjustment unit within the digital interface block of a DDR PHY, designed for generating and adjusting clock signals in the transmit and receive paths. The relevance of this task is driven by the increasing demands on the timing stability of high-speed interfaces and the necessity to calibrate phase relationships without interrupting path operation. In the original architecture, changing a delay involves a procedure for updating the controlled delay line and must be accompanied by a pause in the operation of the corresponding section of the clock path. The proposed modification transitions the Clock Phase Adjustment Block unit to a circuit with a shadow adjustment path, where the new delay value is prepared in an inactive branch, and switching to the updated configuration is performed via glitch-safe clock control logic. This solution eliminates the need to stop the operational clock signal, reduces the risk of synchronization disruption, and enables seamless phase retuning during system operation.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>DDR PHY</kwd><kwd>DLL</kwd><kwd>цифровая линия задержки</kwd><kwd>фазовая подстройка</kwd><kwd>тактовый сигнал</kwd><kwd>динамическая перестройка</kwd><kwd>глитч-безопасный мультиплексор</kwd></kwd-group><kwd-group xml:lang="en"><kwd>DDR PHY</kwd><kwd>DLL</kwd><kwd>DCDL</kwd><kwd>digital delay line</kwd><kwd>phase adjustment</kwd><kwd>clock signal</kwd><kwd>dynamic retuning</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Okajima K. et al. 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