An 80Gb/s Dependable Communication SoC with PCI Express I/F and 8 CPUs ports realizes a high performance communication link with a theoretical peak bandwidth of 4×20Gb/s.

📋 论文概要

该论文提出了一款80Gb/s的可靠通信SoC，集成了PCI Express接口和8个CPU端口，通过部分调节LC-VCO和TX均衡器技术，在实现高速传输的同时降低了功耗和抖动。解决了高速通信中功耗与信号完整性的平衡问题。

💡 主要创新点

• 采用部分调节LC-VCO技术，使PHY功耗降低22%，同时将PLL/CDR抖动抑制在10pspp以内。
• 实现5.0GT/s速率下驱动40英寸FR4走线的TX均衡器，保证高速信号完整性。
• 每端口在20Gb/s速率下功耗仅0.8W，能效达到0.04W/(Gb/s)。

🏷 关键词

📄 原文摘要

Minoru Uemura2, Yasushi Hayakawa1, Takeshi Oshita1, Satoshi Kaneko1, Katsushi Asahina2, Kazutami Arimoto1, Shin’ichi Miura3, Toshihiro Hanawa3, Taisuke Boku3, Mitsuhisa Sato3 Figure 15.2.4 shows the PCIe PHY analog block diagram. A TX equalizer is used to realize high-speed transmission of 5.0GT/s up to 40-inch FR4 trace. The power dissipation of PHY has been reduced by 22%, using the “Partially-regulated LC-VCO” while suppressing the PLL/CDR jitter down to 10pspp .The maximum power consumption per port of this SoC is 0.8W at 20Gb/s. So, the data transfer performance is 0.04W/(Gb/s). The data transfer performance of 4X InfiniBand is 0.083W/(Gb/s) [6]. Thus, this SoC provides 51.5% less power consumption than 4X InfiniBand. Figure 15.2.5 shows the TX eye diagram, which is measured at 5.0GT/s, with a de-emphasis ratio of 3.2dB. 15.2 1 Renesas Electronics, Itami, Japan, Renesas Electronics, Kodaira, Japan,

👥 作者与机构

Sugako Otani1, Hiroyuki Kondo1, Itaru Nonomura2, Atsuyuki Ikeya2,