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JESD220-3A UFS High Performance Booster (HPB) Extension
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JESD220-3A UFS High Performance Booster (HPB) Extension
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-i-
JEDEC
STANDARD
Universal Flash Storage (UFS)
Host Performance Booster(HPB)
Extension
Version 2.0
JESD220-3A
(Revision of JESD220-3, JANUARY 2020)
SEPTEMBER 2020
JEDEC SOLID STATE TECHNOLOGY ASSOCIATION
NOTICE
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through the JEDEC Board of Directors level and subsequently reviewed and approved by the JEDEC
legal counsel.
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The information included in JEDEC standards and publications represents a sound approach to product
specification and application, principally from the solid state device manufacturer viewpoint. Within the
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the standard are met.
Special Legal Disclaimer: JEDEC has received information that certain patents or patent applications
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Published by
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All rights reserved
-iii-
PLEASE!
DON’T VIOLATE
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LAW!
This document is copyrighted by JEDEC and may not be
reproduced without permission.
For information, contact:
JEDEC Solid State Technology Association
3103 North 10th Street
Suite 240 South
Arlington, VA 22201-2107
or refer to www.jedec.org under Standards-Documents/Copyright Information.
JEDEC Standard No. 220-3A
-i-
UFS HOST PERFORMANCE BOOSTER (HPB) EXTENSION, VERSION 2.0
CONTENTS
1 Scope 1
2 Normative Reference 1
3 Terms, and definitions 1
3.1 Acronyms 1
3.2 Terms and definitions 2
3.3 Keywords 2
3.4 Abbreviations 3
3.5 Conventions 3
4 Introduction 4
4.1 Overview 4
4.2 Legacy READ Operation vs. HPB READ Operation 4
5 Host Performance Booster (HPB) functional description 6
5.1 Overall HPB behavior 6
5.2 HPB Region and HPB Sub-Region 7
5.3 HPB Entry 7
5.4 HPB Control modes 8
5.4.1 Device control mode 8
5.4.2 Host control mode 9
5.5 Reading logical blocks using HPB READ command 10
5.6 Pinned Region 12
5.7 HPB Initialization 13
5.7.1 Capability discovery 13
5.7.2 Device configuration 13
5.7.3 Host Memory Allocation 14
5.8 Active and inactive information upon power cycle 14
5.9 Mechanism to support flash maintenance operations 14
5.10 Informing Active Sub-Region and Inactive Region using RESPONSE UPIU 15
6 Command and Response for HPB 15
6.1 HPB READ BUFFER Command 16
6.2 HPB READ Command 18
6.3 HPB WRITE BUFFER Command 20
6.3.1 Inactivating an HPB Region (Host control mode only) 20
6.3.2 prefetching HPB Entries from the host to the device (supported in any control mode) 21
6.3.3 Inactivating all HPB Regions, except for Provisioning Pinned Region (supported in device
control mode only) 22
6.4 RESPONSE UPIU for HPB 23
7 Descriptor for HPB 25
7.1 Device Descriptor for HPB 25
7.2 Unit Descriptor for HPB 26
7.3 Unit Descriptor Configurable Parameters for HPB 27
7.4 Geometry Descriptor for HPB 27
7.5 Flags 28
7.6 Attribute 29
Annex A (informative) HPB Host Guideline 30
A.1 Recommendations for the HPB Host 30
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