Power Optimized Transceivers for Future Switched Networks
Power Optimized Transceivers for Future Switched Networks
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DOI：
10.1109/tvlsi.2013.2283300
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发表时间：
2014-10
影响因子：
2.8
通讯作者：
Yury Audzevich;P. Watts;A. West;A. Mujumdar;S. Moore;A. Moore
中科院分区：
文献类型：
--
作者：
Yury Audzevich;P. Watts;A. West;A. Mujumdar;S. Moore;A. Moore
网络设备功耗正受到越来越多的关注。为了了解和分解收发器功耗，我们创建了一个工具包，其中包含45 nm CMOS和MOS电流模式逻辑（MCML）的收发器电路库，并使用具有代表性的网络流量跟踪与数字合成和SPICE工具来表征功耗。我们的工具包包括构建不同收发器库所需的所有组件：线路编码、帧对齐、通道绑定、串行化和非串行化、时钟数据恢复和时钟生成。对于光收发器，我们表明，光子元件和前端驱动器只消耗总串行收发器功率的一小部分（<;22%）。这意味着光收发器功率的大幅降低只能通过关注物理层电路（如时钟恢复和串并转换）来获得。我们提出了一个突发模式的物理层协议，适合光交换链路，保留了有益的传输特性的8B/10 B，但即使没有功率门控和压控振荡器的功率优化，减少了29%的功耗在空闲期间相比，传统的8B/10 B收发器。我们已向社会大众提供这套工具，希望能推动这方面的工作。
Network equipment power consumption is under increased scrutiny. To understand and decompose transceiver power consumption, we have created a toolkit incorporating a library of transceiver circuits in 45-nm CMOS and MOS current mode logic (MCML) and characterize power consumption using representative network traffic traces with digital synthesis and SPICE tools. Our toolkit includes all the components required to construct a library of different transceivers: line coding, frame alignment, channel bonding, serialization and deserialization, clock-data recovery, and clock generation. For optical transceivers, we show that photonic components and front end drivers only consume a small fraction (<;22%) of total serial transceiver power. This implies that major reductions in optical transceiver power can only be obtained by paying attention to the physical layer circuits such as clock recovery and serial-parallel conversions. We propose a burst-mode physical layer protocol suitable for optically switched links that retains the beneficial transmission characteristics of 8b/10b, but, even without power gating and voltage controlled oscillator power optimization, reduces the power consumption during idle periods by 29% compared with a conventional 8b/10b transceiver. We have made the toolkit available to the community at large in the hope of stimulating work in this field.