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Title	Document #	Date
Universal Flash Storage Host Controller Interface (UFSHCI) Release Number: Version 4.1	JESD223F	Dec 2024
This document replaces all prior versions; however, JESD223E August 2022 (version 4.0) remains available for reference purposes. This standard describes a functional specification of the Host Controller Interface (HCI) for Universal Flash Storage (UFS). The objective of UFSHCI is to provide a uniform interface method of accessing the UFS hardware capabilities so that a standard/common Driver can be provided for the Host Controller. The common Driver would work with UFS host controller from any vendor. This standard includes a description of the hardware/software interface between system software and the host controller hardware. It is intended for hardware designers, system builders and software developers. This standard is a companion document to [UFS], Universal Flash Storage (UFS). The reader is assumed to be familiar with [UFS], [MIPI-UNIPRO], and [MIPI-M-PHY]. Clause 4 provides a brief overview of the architectural overview of UFS. Clause 5 describes the register interface of UFSHCI. Clause 6 describes the data structure used by UFSHCI. Clause 7 provides a theory of operation for UFSHCI. Clause 8 describes the error recovery process for UFSHCI. Committee(s): JC-64, JC-64.1 Available for purchase: $220.00 Add to Cart To help cover the costs of producing standards, JEDEC is now charging for non-member access to selected standards and design files. Most of the content on this site remains free to download with registration. Paying JEDEC member companies enjoy free access to all content. Learn more and apply today. Paying JEDEC Members may login for free access.
UNIVERSAL FLASH STORAGE HOST CONTROLLER INTERFACE (UFSHCI), Version 2.1 Status: Supersededby JESD223D, January 2018	JESD223C	Mar 2016
This document has been superseded by JESD223D, January 2018, however is available for reference only. Committee(s): JC-64.1 Free download. Registration or login required.
UNIVERSAL FLASH STORAGE HOST CONTROLLER INTERFACE (UFSHCI), Version 3.0 Status: Superseded August 2022 by JESD223E	JESD223D	Jan 2018
This document has been superseded by JESD223E, however it is available for reference only. Committee(s): JC-64.1 Available for purchase: $141.00 Add to Cart Paying JEDEC Members may login for free access.
Universal Flash Storage Host Controller Interface (UFSHCI), Version 4.0 Status: Superseded December 2024 by JESD223F	JESD223E	Aug 2022
NOTE: This document has been superseded by JESD223F published in December 2024, but remains available for reference purposes. Committee(s): JC-64.1 Available for purchase: $163.00 Add to Cart Paying JEDEC Members may login for free access.
UNIVERSAL FLASH STORAGE, UFS 2.2	JESD220C-2.2	Aug 2020
The purpose of this standard is definition of a UFS Universal Flash Storage electrical interface and a UFS memory device. This standard defines a unique UFS feature set and includes the feature set of eMMC standard as a subset. This standard replaces JESD220C, UFS 2.1, and introduces a feature called WriteBooster. Item 138.88. Committee(s): JC-64.1 Free download. Registration or login required.
UNIVERSAL FLASH STORAGE, Version 4.0 Status: Superseded December 2024 by JESD220G	JESD220F	Aug 2022
NOTE: This document has been superseded by JESD220G published in December 2024, but remains available for reference purposes. Committee(s): JC-64.1 Available for purchase: $369.00 Add to Cart Paying JEDEC Members may login for free access.

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