SD Specifications Part 1 Physical Layer Simplified ...

1 SD Specifications part 1 Physical Layer Simplified specification Version April 10, 2017 Technical Committee SD Card Association Copyright 2001- 2017 SD Card Association Physical Layer Simplified specification Version i Draft Only Page Draft Revision History for Simplified Version Date Draft Version Changes compared to previous issue March 21, 2017 Draft Apply blank area to Modified Simplified DS Bus Timing ( ) Modified Simplified HS Bus Timing ( ) Blanked Chapter 8 Blanked Appendix Added mechanical drawings to Appendix H April 3, 2017 Draft Draft for TC Check April 10, 2017 Draft Fixed Figures 4-46, 4-55 to 4-63 of VSC ( ) Fxied Figures 4-53 location ( ) Copyright 2001- 2017 SD Card Association Physical Layer Simplified specification Version ii Revision History Date Version Changes compared to previous issue April 3, 2006 Physical Layer Simplified specification Version initial release.

2 (Supplementary Notes is applied.) September 25, 2006 Physical Layer Simplified specification Version (1) High Capacity Memory Card (SDHC) (2) Speed Class 2/4/6 May 18, 2010 Physical Layer Simplified specification Version (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 Physical Layer Simplified specification Version (1) UHS-II Interface (2) UHS Speed Grade 3 (3) Power Limit (4) Function Extension specification August 10, 2016 Physical Layer Simplified specification Version (1)

3 Video Speed Class VSC4/6/10/30/60/90 April 10, 2017 Physical Layer Simplified specification Version (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 or 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 or of the SD Specifications .

4 For example, implementation of the SD Specifications in a host device under versions or 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 or 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 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.

5 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: 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.

6 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.

7 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 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, , FFFFh and 80h.

8 Binary numbers are written with a lower case "b" suffix ( , 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.

9 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.

10 Copyright 2001- 2017 SD Card Association Physical Layer Simplified specification Version v Table of Contents 1. General Description .. 1 2. System Features .. 3 3. SD Memory Card System Concept .. 5 Read-Write Property .. 5 Supply Voltage .. 5 Card Capacity .. 5 User Area and Protected Area .. 5 Card Capacity Classification .. 5 Speed Class .. 5 Bus Topology .. 6 Bus Protocol .. 7 SD Bus Protocol .. 7 SPI Bus Protocol .. 10 UHS-II Bus Protocol .. 10 SD Memory Card Pins and Registers .. 11 SD Bus Pin Assignment .. 11 UHS-II Pin Assignment.