GN2558
The GN2558 Tri-Edge CDR is a quad PAM4 CDR re-timer with integrated VCSEL array driver designed for 53.125 Gbps signal conditioning within next-gen pluggable optical modules and Active Optical Cables (AOC). This PAM4 CDR includes proprietary VCSEL compensation to enable a wide range of VCSEL options with fully adaptive input equalization and fast startup to streamline system bring up.
搭配 GN2559，此 Tri-Edge 芯片组可实现低功耗、低延迟的模拟信号处理，可满足高性能计算 (HPC)、人工智能 (AI) 和云数据中心网络的需求。芯片组还完全符合 200G-SR4 Open Eye MSA 规范。
功能
- 功耗低
- 低延迟模拟 CDR
- 四个独立的传输通道
- 200GBASE-SR4 光收发器模块
- 200G 和 400G QSFP-DD 光收发器模块
- 200G 和 400G OSFP 光收发器模块
- 200G-AUI-4 和 400G-AUI-8 芯片到模块以及 CEI 56G VSR 重定时接口
应用
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资源
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Semtech’s Tri-Edge™ GN2255 is the industry’s first analog IC solution enabling ultra-low latency, less than 1.5W module power, and performance for up to 10km reach for 50Gbps PAM4 SFP56 optical modules. Based on the proven Tri-Edge CDR platform qualified in data center applications, the new solution delivers the cost effectiveness, small footprint, low power, ultra-low latency, and performance demanded by 5G front haul applications. The new Tri-Edge GN2255 enables 50Gbps PAM4 links that will double the bandwidth of currently deployed 25Gbps NRZ front haul links. Semtech’s introduction of the Tri-Edge 5G wireless IC will help support new 5G applications, including edge computing, enhanced mobile broadband and device streaming, and fixed wireless access (i.e., home Internet). Learn more about the product announcement here.
今年早些时候，评估工程 (EE) 与 Semtech 信号完整性产品事业部高级营销经理 Raza Khan 进行了交谈，讨论了行业趋势和新 Tri-Edge 5G 无线产品。
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在 2018 年进行了大量演示和 alpha 模块测试之后，双密度版本的四通道小型可插拔 (QFSP) 多源协议 (MSA) 模块标准有望成为新线卡的规则。QSFP-DD 热潮的隐含意义不是模块本身的物理特性，而是转向先进信令方法的趋势。十年前，QSFP28 的问世预示着使用 NRZ 信令的 25Gbps 电通道即将占据主导地位。如今，QSFP-DD 及其更庞大的表亲 —— 八进制 SFP 或 OSFP ，都使用 PAM4 信令。其用得最多的是 50Gbps 通道。但 QSFP-DD 足够灵活，可以在各种实施中使用八通道接口：25G x 8 用于 200Gbit 以太网，50G x 8 用于 400Gbit 以太网，可能还有一些早期的 100G x 8 用于预标准 800Gbit 以太网。
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Slow but steady advances were made in 2018 in on-board optical links for chip-to-chip and chip-to-module interfaces. The integrated-optics revolution, anticipated three years ago when the Consortium for On-Board Optics (COBO), of which Semtech is an associate member, was launched, has been replaced by a realization that only slow migration from traditional pluggable modules will serve the data center, whether within a single line card or server blade, or between cards and racks. Even as recent as a year ago, COBO members began rethinking and changing their tune to stress coexistence of pluggable MSA modules and the embedded on-board modules chosen by COBO as a de facto standard.
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