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UFS 2.0 boosts security, increases link bandwidth

Posted: 23 Sep 2013 ?? ?Print Version ?Bookmark and Share

Keywords:JEDEC? UFS? mobile applications? computing systems? serial interface?

The JEDEC Solid State Technology Association recently unveiled specifications for Universal Flash Storage 2.0, which is geared towards high performance, low power mobile applications and computing systems. The new standard offers increased link bandwidth for performance improvement, a security features extension and additional power saving features.

"UFS v2.0 offers a clear value proposition to the industry, with significant performance improvements that will lead to a better overall mobile device user experience," said Mian Quddus, Chairman of the JEDEC Board of Directors and the JC-64 Committee for Embedded Memory Storage and Removable Memory Cards. He added, "Memory manufacturers and leading consumer device and mobile OEMs strongly support UFS and have devoted countless hours to the development of this latest update."

UFS is a high performance interface designed for use in computing and mobile systems requiring low power consumption such as smart phones and tablets. Its high speed serial interface and optimised protocol enable significant improvements in throughput and system performance. Dramatic growth in the mobile market coupled with an increasing focus on multimedia applications continues to drive both usage models and memory bandwidth requirements, and UFS v2.0 builds on JEDEC Flash memory storage standards designed to help address this demand. In UFS v2.0, the link bandwidth has been increased from 300MB/s in UFS v1.1 to up to 600MB/s per lane, and multi-lane support has been introduced allowing up to 1.2GB/s per each data transfer direction.

To achieve the highest performance and most power efficient data transport, JEDEC UFS aligns with industryCleading specifications from the MIPI Alliance to form its Interconnect Layer. This collaboration continues with UFS v2.0, which references the M-PHY Version 3.0 specification and the UniProSM Version 1.6 specification.

JEDEC has also published two complementary standards, JESD223B UFS Host Controller Interface (UFSHCI) version 2.0, and JESD223-1 UFS Host Controller Interface (UFSHCI), Unified Memory Extension. JESD223B is intended to simplify the design process by defining a standard host controller interface on which system designers can create a common host controller software driver layer to work with UFS host controller hardware from different manufacturers. The HCI functionality also enables higher performance and power efficiency by minimising the involvement of the host processor in the operation of the Flash storage sub-system. The JESD223-1 UFSHCI Unified Memory Extension standard defines the interface between the UFS driver and the UFS host controller. In addition to the register interface, it defines data structures inside the system memory, which are used to exchange data, control and status information. Unified Memory offers the possibility to move device internal working memory into the system memory to reduce overall system cost and to improve device performance. JESD223B and JESD223-1 may also be downloaded free of charge from the JEDEC website.

JESD220B Universal Flash Storage v2.0 may be downloaded free of charge here.

- Paul Buckley
??EE Times

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