기본 정보
연구 분야
프로젝트
논문
구성원
article|
인용수 5
·2025
A 4 × 32 Gb/s 1.8 pJ/bit Collaborative Baud-Rate CDR With Background Eye-Climbing Algorithm and Low-Power Global Clock Distribution
Jihee Kim, Jia Park, Jiwon Shin, Hanseok Kim, Kahyun Kim, Haengbeom Shin, Ha-Jung Park, Woo‐Seok Choi
IEEE Journal of Solid-State Circuits
초록

This article presents design techniques for an energy-efficient multi-lane receiver (RX) with baud-rate clock and data recovery (CDR), which is essential for high-throughput low-latency communication in high-performance computing systems. The proposed low-power global clock distribution not only significantly reduces power consumption across multi-lane RXs but is capable of compensating for the frequency offset without any phase interpolators (PIs). To this end, a fractional divider (FDIV) controlled by CDR is placed close to the global phase locked loop. Moreover, in order to address the suboptimal lock point of conventional baud-rate phase detectors, the proposed CDR employs a background eye-climbing algorithm (ECA), which optimizes the sampling phase and maximizes the vertical eye margin (VEM). Fabricated in a 28 nm CMOS process, the proposed <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX"> </tex-math></inline-formula> Gb/s RX shows a low integrated fractional spur of −40.4 dBc at a 2500 ppm frequency offset. Furthermore, it improves bit-error-rate (BER) performance by increasing the VEM by 26 mV. The entire RX achieves the energy efficiency of 1.8 pJ/bit with the aggregate data rate of 128 Gb/s.

키워드
BaudComputer scienceBit (key)AlgorithmDistribution (mathematics)Power (physics)MathematicsTelecommunicationsPhysics
타입
article
IF / 인용수
- / 5
게재 연도
2025

주식회사 디써클

대표 장재우,이윤구서울특별시 강남구 역삼로 169, 명우빌딩 2층 (TIPS타운 S2)대표 전화 0507-1312-6417이메일 info@rndcircle.io사업자등록번호 458-87-03380호스팅제공자 구글 클라우드 플랫폼(GCP)

© 2026 RnDcircle. All Rights Reserved.