SD Specifications
Part 1
Physical Layer
Simplified Specification
Version 6.00
April 10, 2017
Technical Committee
SD Card Association
©Copyright 2001-2017 SD Card Association
Physical Layer Simplified Specification Version 6.00
i
Draft Only Page
Draft Revision History for Simplified Version 6.00
Date
Draft
Version
Changes compared to previous issue
March 21, 2017
Draft 0.50
Apply Ver.5.00 blank area to Ver.6.00
Modified Simplified DS Bus Timing (6.6.6)
Modified Simplified HS Bus Timing (6.6.7)
Blanked Chapter 8
Blanked Appendix A.1
Added mechanical drawings to Appendix H
April 3, 2017
Draft 1.00
Draft for TC Check
April 10, 2017
Draft 1.01
Fixed Figures 4-46, 4-55 to 4-63 of VSC (4.13)
Fxied Figures 4-53 location (4.13.2.8)
©Copyright 2001-2017 SD Card Association
Physical Layer Simplified Specification Version 6.00
ii
Revision History
Date
Version
Changes compared to previous issue
April 3, 2006
1.10
Physical Layer Simplified Specification Version 1.10 initial release.
(Supplementary Notes Ver1.00 is applied.)
September 25, 2006
2.00
Physical Layer Simplified Specification Version 2.00
(1) High Capacity Memory Card (SDHC)
(2) Speed Class 2/4/6
May 18, 2010
3.01
Physical Layer Simplified Specification Version 3.01
(1) Extended Capacity Memory Card (SDXC)
(2) Ultra High Speed I (UHS-I)
(3) Speed Class 10
(4) UHS Speed Grade 1
(5) Current Limit
January 22, 2013
4.10
Physical Layer Simplified Specification Version 4.10
(1) UHS-II Interface
(2) UHS Speed Grade 3
(3) Power Limit
(4) Function Extension Specification
August 10, 2016
5.00
Physical Layer Simplified Specification Version 5.00
(1) Video Speed Class VSC4/6/10/30/60/90
April 10, 2017
6.00
Physical Layer Simplified Specification Version 6.00
(1) Discard and FULE to Erase
(2) Card Ownership Protection (COP) for Card Lock/Unlock
(3) Application Performance Class for A1/A2
(4) Cache
(5) Self-Maintenance
(6) Command Queuing
(7) Simplifed Mechanical Drawings
(8) Simplifed Bus Timings
To the extent this proposed specification, which is being submitted for review under the IP
Policy, implements, incorporates by reference or refers to any portion of versions 1.0 or 1.01 of
the SD Specifications (including Parts 1 through 4), adoption of the proposed specification shall
require Members utilizing the adopted specification to obtain the appropriate licenses from the
SD-3C, LLC, as required for the utilization of those portion(s) of versions 1.0 or 1.01 of the SD
Specifications.
For example, implementation of the SD Specifications in a host device under versions 1.0 or
1.01 and under the adopted specification requires the execution of a SD Host Ancillary License
Agreement with the SD-3C, LLC; and implementation of the SD Specifications under versions
1.0 or 1.01 and under the proposed specification in a SD Card containing any memory storage
capability (other than for storage of executable code for a controller or microprocessor within
the SD Card) requires the execution of a SD Memory Card License Agreement with the SD-3C,
LLC.
©Copyright 2001-2017 SD Card Association
Physical Layer Simplified Specification Version 6.00
iii
Release of SD Simplified Specification/Addendum
The following conditions apply to the release of the SD Simplified Specification/Addendum by the SD
Card Association. The Simplified Specification/Addendum is a subset of the complete version of SD
Specification/Addendum that is owned by the SD Card Association.
Conditions for publication
Publisher and Copyright Holder:
SD Card Association
2400 Camino Ramon, Suite 375
San Ramon, CA 94583 USA
Telephone: +1 (925) 275-6615,
Fax: +1 (925) 886-4870
E-mail: office@sdcard.org
Notes:
This Simplified Specification/Addendum is provided on a non-confidential basis subject to the disclaimers
below. Any implementation of the Simplified Specification/Addendum may require a license from the SD
Card Association or other third parties.
Disclaimers:
The information contained in the Simplified Specification/Addendum is presented only as a standard
Specification/Addendum for SD Cards and SD Host/Ancillary products and is provided "AS-IS" without
any representations or warranties of any kind. No responsibility is assumed by the SD Card Association
for any damages, any infringements of patents or other right of the SD Card Association or any third
parties, which may result from its use. No license is granted by implication, estoppel or otherwise under
any patent or other rights of the SD Card Association or any third party. Nothing herein shall be construed
as an obligation by the SD Card Association to disclose or distribute any technical information, know-how
or other confidential information to any third party.
©Copyright 2001-2017 SD Card Association
Physical Layer Simplified Specification Version 6.00
iv
Conventions Used in This Document
Naming Conventions
Some terms are capitalized to distinguish their definition from their common English meaning. Words
not capitalized have their common English meaning.
Numbers and Number Bases
Hexadecimal numbers are written with a lower case "h" suffix, e.g., FFFFh and 80h.
Binary numbers are written with a lower case "b" suffix (e.g., 10b).
Binary numbers larger than four digits are written with a space dividing each group of four digits, as in
1000 0101 0010b.
All other numbers are decimal.
Key Words
May: Indicates flexibility of choice with no implied recommendation or requirement.
Shall: Indicates a mandatory requirement. Designers shall implement such mandatory requirements
to ensure interchangeability and to claim conformance with the specification.
Should: Indicates a strong recommendation but not a mandatory requirement. Designers should give
strong consideration to such recommendations, but there is still a choice in implementation.
Reserved: Indicates a bit, byte, field, and value that are set aside for future standardization or other
usage. A reserved bit, byte, or field shall be set to zero unless specified differently in this
specification, or in accordance with a future extension to this or other standards. Hosts and
Cards are not required to check reserved bits, bytes, or fields for zero values. Values that are
reserved for future standardization shall not be specified by hosts and cards.
Application Notes
Some sections of this document provide guidance to the host implementers as follows:
Application Note:
This is an example of an application note.
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