SDIO 6.0物理层简化规范设计参考

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SDIO（Secure Digital Input/Output）物理层简化规范6.0是SD卡协会于2017年4月10日发布的参考设计文档，旨在为SDIO设备的设计者提供简化版的物理层规范，以便于理解和实现。这个版本是对先前版本的修订和扩展，主要包括以下几个关键更新： 1. **修订的DS Bus和HS Bus时序** (6.6.6和6.6.7): 版本6.00中对DS (Data Standard)总线和HS (High Speed)总线的时序进行了修改，以优化数据传输性能和兼容性。这些改动可能涉及信号处理、时钟管理以及接口信号的精确定义，以确保设备在高速数据交换时能稳定运行。 2. **章节和附录的调整**: - 删除了第8章和附录A.1的内容，这可能反映了某些功能或主题不再适用于简化版本，或者为了聚焦核心物理层规范。 - 添加了机械图纸到附录H，这可能是为了提供更全面的设计支持，包括物理尺寸和结构信息。 3. **高容量内存支持** (2.00版本起): 版本2.00引入了对高容量内存的支持，这表明SDIO标准开始适应存储容量不断增长的需求，可能包括对更高速度接口和更大数据带宽的兼容。 4. **历史修订**: - 从2006年开始，SDIO物理层简化规范经历了多次迭代，从1.10版本到2.00版本，每次更新都反映了技术进步和市场需求的变化。 5. **版权与声明**: 文档版权属于SD卡协会，并且强调了所有内容为草案性质，可能还需要技术委员会的最终审查和批准。日期和版本号的变化反映了修订的进度和公开阶段。总体而言，SDIO Physical Layer Simplified Specification 6.0提供了关于SDIO物理层设计的实用指导，对于开发SDIO接口的硬件工程师来说，它涵盖了关键的接口规范、数据传输机制以及对新规格的支持，以确保设备在各种应用中的高效性和兼容性。

Physical Layer Simplified Specification Version 6.00

Table of Tables

Table 3-1 : SD Memory Card Pad Assignment .............................................................................................. 11

Table 3-2 : SD Memory Card Registers ......................................................................................................... 12

Table 3-3 : UHS-II Interface Pad Assignment ................................................................................................ 13

Table 3-4 : Register Setting Requirements for ROM Card ............................................................................ 14

Table 3-5 : UHS-I Host and Card Combinations ............................................................................................ 16

Table 3-6 : Bus Speed Modes of UHS-I Card ................................................................................................ 18

Table 3-7 : Bus Speed Mode Option / Mandatory .......................................................................................... 18

Table 3-8 : UHS-II Host and Card Combinations ........................................................................................... 20

Table 3-9 : Bus Speed Modes of UHS-II Card ............................................................................................... 22

Table 3-10 : Bus Speed Mode Option / Mandatory ........................................................................................ 23

Table 3-11 : LV Interface Bus Speed Mode Option / Mandatory .................................................................... 25

Table 4-1: Overview of Card States vs. Operation Modes ............................................................................. 26

Table 4-2 : S18R and S18A Combinations ..................................................................................................... 33

Table 4-3 : Tuning Block Pattern .................................................................................................................... 34

Table 4-4 : Read Command Blocklen ............................................................................................................ 38

Table 4-5 : Write Command Blocklen ............................................................................................................. 38

Table 4-6 : Lock Card Data Structure ............................................................................................................. 48

Table 4-7 : CMD42 Ver.1.0 Mode (Non-COP Card) Lock Unlock Function ................................................... 54

Table 4.3.7-1 : PWD Related Lock Unlock Function for COP Card ............................................................... 55

Table 4.3.7-2 : COP Specific Function for COP Card .................................................................................... 56

Table 4-8 : Force Erase Function to the Locked Card (Relation to the Write Protects) ................................ 58

Table 4-9 : Relation between ACMD6 and the Lock/Unlock State ................................................................ 58

Table 4-10 : Version Difference of Lock/Unlock Functions ............................................................................ 59

Table 4.3.7-3 : Type 3 Lock/Unlock Functions Difference .............................................................................. 60

Table 4-11 : Available Functions of CMD6 ..................................................................................................... 65

Table 4-12 : Power Limit and Current Limit of VDD1 and VDD2 ................................................................... 66

Table 4-13 : Status Data Structure ................................................................................................................. 70

Table 4-14 : Data Structure Version ............................................................................................................... 70

Table 4-15 : Status Code of Mode 0 to Supported Function Group .............................................................. 71

Table 4-16 : Status Code of Mode 1 to Supported Function Group .............................................................. 71

Table 4-17 : Status Code of Mode 0 and 1 to Unsupported Function Group ................................................ 71

Table 4-18 : Format of CMD8 ......................................................................................................................... 74

Table 4-19 : Card Operation for CMD8 in SD Mode ...................................................................................... 74

Table 4-20 : Command Format ...................................................................................................................... 81

Table 4-21 : Card Command Classes (CCCs) in SD Mode ........................................................................... 83

Table 4-22 : Command Support Requirements ............................................................................................. 85

Table 4-23 : Basic Commands (class 0) ........................................................................................................ 87

Table 4-24 : Block-Oriented Read Commands (class 2) ............................................................................... 88

Table 4-25 : Block-Oriented Write Commands (class 4) ................................................................................ 89

Table 4-26 : Block Oriented Write Protection Commands (class 6)............................................................... 89

Table 4-27 : Erase Commands (class 5) ........................................................................................................ 89

Table 4-28 : Lock Card (class 7) .................................................................................................................... 90

Table 4-29 : Application-Specific Commands (class 8).................................................................................. 90

Table 4-30 : I/O Mode Commands (class 9) .................................................................................................. 90

Table 4-31 : Application Specific Commands used/reserved by SD Memory Card ....................................... 92

Table 4-32 : Switch Function Commands (class 10) ...................................................................................... 93

Table 4-33 : Function Extension Commands (class 11) ................................................................................. 93

Table 4.7.4-1 : Command Queue Function Commands (class 1).................................................................. 94

Table 4-34 : Difference of SD Commands Definition in UHS-II ..................................................................... 95

Table 4-35 : Card State Transition Table ........................................................................................................ 97

Table 4-36 : Response R1 .............................................................................................................................. 98

Physical Layer Simplified Specification Version 6.00

xvi

Table 4-37 : Response R2 .............................................................................................................................. 98

Table 4-38 : Response R3 .............................................................................................................................. 99

Table 4-39 : Response R6 .............................................................................................................................. 99

Table 4-40 : Response R7 ............................................................................................................................ 100

Table 4-41 : Voltage Accepted in R7 ............................................................................................................ 100

Table 4-42 : Card Status............................................................................................................................... 103

Table 4-43 : Card Status Field/Command - Cross Reference ..................................................................... 104

Table 4-44 : SD Status ................................................................................................................................ 106

Table 4-45 : Speed Class Code Field .......................................................................................................... 106

Table 4-46 : Performance Move Field .......................................................................................................... 107

Table 4-47 : AU_SIZE Field .......................................................................................................................... 107

Table 4-48 : Maximum AU size ..................................................................................................................... 107

Table 4-49 : Erase Size Field ....................................................................................................................... 108

Table 4-50 : Erase Timeout Field ................................................................................................................. 108

Table 4-51 : Erase Offset Field ..................................................................................................................... 108

Table 4-52 : UHS_SPEED_GRADE Field .................................................................................................... 109

Table 4-53 : UHS_AU_SIZE Field ................................................................................................................ 109

Table 4-54 : VIDEO_SPEED_CLASS Field ................................................................................................. 109

Table 4-55 : VSC_AU_SIZE Field ................................................................................................................ 110

Table 4-56 : Valid AU Size and SU Size ........................................................................................................ 111

Table 4-57 : SUS_ADDR Field ...................................................................................................................... 111

Table 4.10.2-1 : APP_PERF_CLASS Field ................................................................................................... 111

Table 4.10.2-2 : PERFORMANCE_ENHANCE Field .................................................................................. 112

Table 4.10.2-3 : Command Queue Support Field ........................................................................................ 112

Table 4.10.3-1 : Task Status ......................................................................................................................... 112

Table 4-58 : Timing Diagram Symbols ......................................................................................................... 113

Table 4-59 : Timing Values (Except SDR50, DDR50 and SDR104) ............................................................ 113

Table 4-60 : Timing Values for SDR50, DDR50 and SDR104 Modes ......................................................... 113

Table 4-61 : Measurement Condition of Speed Class (SDSC and SDHC) ................................................. 119

Table 4-62 : Performance Requirements for Each Class (SDSC and SDHC) ............................................ 120

Table 4-63 : Measurement Conditions of Speed Class (SDXC) .................................................................. 123

Table 4-64 : Performance Requirements for Each Class (SDXC) ............................................................... 124

Table 4-65 : Speed Grade Measurement Conditions for UHS-I and UHS-II ............................................... 128

Table 4-66 : Video Speed Class Violating Conditions .................................................................................. 130

Table 4-67 : Busy Time for CMD20 Operations ........................................................................................... 136

Table 4-68 : SD Interface Mode Requirements for Video Speed Classes ................................................... 137

Table 4-69 : Video Speed Class Measurement Conditions ......................................................................... 145

Table 4-70 : Clock Condition for Video Speed Class ................................................................................... 145

Table 4-71 : Power Limit per Interface for Video Speed Class .................................................................... 145

Table 4-72: Clock Condition for Application Performance Class ................................................................. 150

Table 4-73: Power Limit per Interface for Application Performance Class ................................................. 151

Table 4-74 : Command Support list in CQ Mode ......................................................................................... 156

Table 4-75 : CURRENT_STATE for CQ Mode ............................................................................................. 157

Table 5-1 : OCR Register Definition ............................................................................................................. 161

Table 5-2 : The CID Fields ............................................................................................................................ 162

Table 5-3 : CSD Register Structure .............................................................................................................. 163

Table 5-4 : The CSD Register Fields (CSD Version 1.0) ............................................................................. 164

Table 5-5 : TAAC Access Time Definition ..................................................................................................... 165

Table 5-6 : Maximum Data Transfer Rate Definition .................................................................................... 165

Table 5-7 : Supported Card Command Classes .......................................................................................... 166

Table 5-8 : Data Block Length ...................................................................................................................... 166

Table 5-9 : DSR Implementation Code Table ............................................................................................... 167

Table 5-10 : V

Min. Current Consumption............................................................................................... 167

Physical Layer Simplified Specification Version 6.00

xvii

Table 5-11 : V

Max. Current Consumption .............................................................................................. 167

Table 5-12 : Multiply Factor for the Device Size .......................................................................................... 168

Table 5-13 : R2W_FACTOR ......................................................................................................................... 169

Table 5-14 : Data Block Length .................................................................................................................... 169

Table 5-15 : File Formats.............................................................................................................................. 170

Table 5-16 : The CSD Register Fields (CSD Version 2.0) ........................................................................... 171

Table 5-17 : The SCR Fields ........................................................................................................................ 174

Table 5-18 : SCR Register Structure Version............................................................................................... 174

Table 5-19 : Physical Layer Specification Version ....................................................................................... 175

Table 5-20 : CPRM Security Version ............................................................................................................ 177

Table 5-21 : SD Memory Card Supported Bus Widths ................................................................................ 177

Table 5-22 : Extended Security .................................................................................................................... 178

Table 5-23 : Command Support Bits ............................................................................................................ 178

Table 5-24 : Field Definition of Extension Register Set Address ................................................................. 191

Table 5-25 : Function Extension Event Register .......................................................................................... 191

Table 5-26 : Setting Combination of FXE Register Set ................................................................................ 192

Table 5-27 : Standard Function Code Assignment Table ............................................................................. 193

Table 5-28 : Power Management Register Set ............................................................................................ 193

Table 5-29 : General Information of Power Management Function ............................................................. 198

Table 5-30 : Performance Enhancement Register Set ................................................................................ 200

Table 5-31 : General Information of Performance Enhancement Function ................................................. 201

Table 6-1: DSR Register Contents ............................................................................................................... 206

Table 6-2 : Threshold Level for High Voltage ............................................................................................... 206

Table 6-3 : Peak Voltage and Leakage Current ........................................................................................... 206

Table 6-4 : Bus Operating Conditions - Signal Line's Load ......................................................................... 206

Table 7-1 : Command Format ...................................................................................................................... 217

Table 7-2 : Command Classes in SPI Mode ................................................................................................ 218

Table 7-3 : Commands and Arguments ........................................................................................................ 222

Table 7-4 : Application Specific Commands used/reserved by SD Memory Card - SPI Mode ................... 223

Table 7-5 : Card Operation for CMD8 in SPI Mode ..................................................................................... 224

Table 7-6 : SPI Mode Status Bits ................................................................................................................. 230

Table F - 1 : Combination of Codes to Identify a Function Driver ................................................................ 240

Physical Layer Simplified Specification Version 6.00

1. General Description

SD Memory Card is a memory card that is specifically designed to meet the security, capacity,

performance, and environment requirements inherent in newly emerging audio and video consumer

electronic devices. The SD Memory Card will include a content protection mechanism that complies with

the security of the SDMI standard and will be faster and capable of higher Memory capacity. The SD

Memory Card security system uses mutual authentication and a "new cipher algorithm" to protect against

illegal usage of the card content. A Non-secure access to the user's own content is also available.

SD memory cards may also support a second security system based on commonly used standards, such

as ISO-7816, which can be used to interface the SD memory card into public networks and other systems

supporting mobile e-commerce and digital signature applications.

In addition to the SD Memory Card, there is the SD I/O (SDIO) Card. The SDIO Card specification is

defined in a separate specification named: "SDIO Card Specification" that can be obtained from the SD

Association. The SDIO Specification defines an SD card that may contain interfaces between various I/O

units and an SD Host. The SDIO card may contain memory storage capability as well as its I/O

functionality. The Memory portion of SDIO card shall be fully compatible to the given Physical Layer

Specification. The SDIO card is based on and compatible with the SD Memory card. This compatibility

includes mechanical, electrical, power, signalling, and software. The intent of the SD I/O card is to provide

high-speed data I/O with low power consumption for mobile electronic devices. A primary goal is that an

I/O card inserted into a non-SDIO aware host will cause no physical damage or disruption of that device

or its software. In this case, the I/O card should simply be ignored. Once inserted into an SDIO aware

host, the detection of the card will be via the normal means described in the given Physical Layer

Specification with some extensions that are described in the SDIO Specification.

The SD Memory Card communication is based on an advanced 9-pin interface (Clock, Command, 4xData

and 3xPower lines) designed to operate in at maximum operating frequency of 208 MHz and low voltage

range. The communication protocol is defined as a part of this specification.

The SD Specifications are divided into several documents. The SD Specifications documentation

structure is given in Figure 1-1.

Figure 1-1 : SD Specifications Documentation Structure

• Audio Specification:

This specification, along with other application specifications, describes the specification of a specific

application (in this case - Audio Application) and the requirements to implement it.

• File System Specification:

The specification describes the specification of the file format structure of the data saved in the SD

Memory Card (in User Area and Protected Area).

• Security Specification:

Application Specifications

Part 4 Audio

Part 8 Video

Other Applications

Part 3 Security

Part 2 File System

Part 1 Physical Layer

UHS-II Addendum

Mechanical Addenda

eSD Addendum (Embedded)

Part A1

Advanced

Security SD

Extension

Part E1 SDIO

Physical Layer Simplified Specification Version 6.00

The specification describes the content protection mechanism and the application-specific commands

that support it.

• Physical Layer Specification (this document):

The specification describes the physical interface and the command protocol used by the SD Memory

Card. The purpose of the Physical Layer specification is to define the SD Memory Card, its environment,

and handling.

The document is divided into several portions. Chapter 3 gives a general overview of the system

concepts. The common SD Memory Card characteristics are described in Chapter 4. As this description

defines an overall set of card properties, we recommend using the product documentation in parallel. The

card registers are described in Chapter 5.

Chapter 6 defines the electrical parameters of the SD Memory Card's hardware interface.

Mechanical Specification described in Chapter 8 in Version 2.00 is moved to the Standard Size

Mechanical Addendum.

There are three mechanical addenda depend on form factors.

(1) Standard Size Mechanical Addendum

(2) miniSD Mechanical Addendum

(3) microSD Mechanical Addendum

UHS-II Interface Specification is defined by the UHS-II Addendum.

Un-removable memory device for embedded application is defined by the eSD Addendum.

As used in this document, "shall" or "will" denote a mandatory provision of the standard. "Should" denotes

a provision that is recommended but is not mandatory. "May" denotes a feature, which may or may not

be present–at the option of the implementer–and whose presence does not preclude compliance.

• Mc-EX Interface Specification: (This section was added in version 1.10)

Part A1 of the SD memory card specification (Refer to Figure 1-1) serves as an extension to the SD card

Physical Layer Specification and provides all of the definitions required to transfer the Mobile Commerce

Extension (Mc-EX) command packets from the Mc-EX host to the Mc-EX enabled SD memory card, and

vice versa.

• SDIO Specification

SDIO card and embedded SDIO are specified based on the Physical Layer Specification and

modifications and extensions are described in the Part E1 SDIO Specification.

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