KIOPS-Random-Read 690MB/s-Sequential-Read Universal Flash Storage Device Controller with Unified Memory Extension

📋 论文概要

该论文提出了一种通用闪存存储（UFS）设备控制器，通过统一内存扩展技术实现了KIOPS级别的随机读取和690MB/s的顺序读取性能，解决了移动设备嵌入式NAND存储在高性能与低功耗之间的平衡问题。

💡 主要创新点

• 提出统一内存扩展架构，将控制器内部SRAM与外部DRAM统一管理，提升随机访问效率。
• 采用多通道并行与流水线技术，实现690MB/s的顺序读取带宽和KIOPS级随机读取性能。
• 针对移动设备优化功耗，在1W左右功耗下达到高性能指标。

🏷 关键词

📄 原文摘要

Kenichi Maeda1, Toshio Fujisawa1, Junji Wadatsumi2, Daisuke Miyashita2, Shouhei Kousai2, Yasuo Unekawa2, Shinsuke Fujii2, Takuma Aoyama2, Takayuki Tamura1, Atsushi Kunimatsu1, Yukihito Oowaki1 Toshiba, Yokohama, Japan, 2Toshiba, Kawasaki, Japan 1 Mobile devices have made remarkable advances in recent years. They generally use embedded NAND storage devices, which are tiny (10s of millimeters square) and low-power (around 1W in the active state) single BGA packages that contain both a controller and NAND chips. Figure 19.3.1 shows read performance of recent embedded NAND storage device products and the maximum link speeds in their standards. The figure indicates that more powerful embedded NAND storage devices are desired by the market. In particular, universal Flash storage (UFS) 2.0, the latest standard, defines high link speed, which is 3× faster than the recent embedded multimedia card (eMMC). In this context, we develop a

👥 作者与机构

Konosuke Watanabe1, Kenichiro Yoshii1, Nobuhiro Kondo1,