High Swing Pulse-Amplitude Modulation of Transmission Line Links for On-Chip Communication
High Swing Pulse-Amplitude Modulation of Transmission Line Links for On-Chip Communication
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DOI：
10.1109/iscas.2018.8351267
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发表时间：
2018-05
期刊：
影响因子：
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通讯作者：
R. Afoakwa;Lejie Lu;Yong Wang;Hui Wu;Michael C. Huang
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文献类型：
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作者：
R. Afoakwa;Lejie Lu;Yong Wang;Hui Wu;Michael C. Huang
随着芯片多处理器（CMP）的核心数量不断增加，片上网络（NoC）结构仍然是性能和能源的重要组成部分。我们建议使用高电压摆动串行链路作为骨干NoC。我们设计的发射机驱动器可提供高输出摆幅并实现高速脉冲幅度调制（PAM-4和PAM-8）传输。我们表明，仔细的电路级收发器的设计，再加上系统级的架构利用这些链接，它是可能的，以不同的自适应调制驱动高达8厘米的片上传输线。使用这样的设计，实验分析显示，与基线相比，平均性能提高了1.4倍。总的能量延迟乘积改进为1.75倍。
With ever increasing core count of chip-multiprocessors (CMPs), the network-on-chip (NoC) fabric continues to be an important component for performance and energy. We propose the use of high voltage swing serial links as the backbone NoC. We designed transmitter drivers to deliver a high output swing and enable high speed Pulse-Amplitude Modulation (PAM-4 and PAM-8) transmissions. We show that with careful circuit-level transceiver design, coupled with system level architectural utilization of such links, it is possible to drive up to 8 cm of on-chip transmission line at diverse adaptive modulations. Using such a design, experimental analysis shows an average of 1.4× performance improvement over baseline. The overall energy-delay product improvement is 1.75×.