30.7 An 8b Injection-Locked Phase Rotator with Dynamic Multiphase Injection for 28/56/112Gb/s Serdes Application
30.7 An 8b Injection-Locked Phase Rotator with Dynamic Multiphase Injection for 28/56/112Gb/s Serdes Application
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30.7 用于 28/56/112Gb/s Serdes 应用的具有动态多相注入的 8b 注入锁定相位旋转器
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Bo
中科院分区：
文献类型：
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作者：
Yi;Bo
数据中心中不断增长的流量对具有更高速度和严格功耗要求的串行链路设计提出了多重挑战。由于时钟分配在串行链路中消耗了总功率的很大一部分，因此时钟是一个主要挑战。最近的出版物[1]-[4]部署了延迟锁定环（DLL）或注入锁定环形振荡器（ILRO）与相位插值器（PI）的组合以生成多相时钟。例如，28 Gb/s四分之一速率NRZ接收器需要8相7 GHz时钟，而56/112 Gb/s基于DSP的PAM-4接收器需要4/8相7 GHz时钟。在这项工作中，建议的注入锁定相位旋转器（ILPR）可以提供多相时钟没有多个PI或一个多相输入时钟。
Growing traffic in data centers imposes multiple challenges on serial link design with higher speed and stringent power requirements. Clocking is one major challenge due to the significant portion of total power that clock distribution consumes in a serial link. Recent publications [1]–[4] deploy either a delay-locked loop (DLL), or an Injection-locked ring oscillator (ILRO) combined with phase interpolators (PIs) to generate multiphase clocks. For example, a 28Gb/s quarter-rate NRZ receiver requires an 8-phase 7GHz clock while a 56/112Gb/s DSP-based PAM-4 receiver requires a 4/8-phase 7GHz clock. In this work, the proposed injection-locked phase rotator (ILPR) can provide multiphase clocks without multiple PIs or a multiphase input clock.