SDI Technologies SDIO Card manual Release of SD Simplified Specification

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©Copyright 2000-2007 SD Card Association

SDIO Simplified Specification Version 2.00

Release of SD Simplified Specification

The following conditions apply to the release of the SD simplified specification ("Simplified Specification") by the SD Card Association. The Simplified Specification is a subset of the complete SD Specification which is owned by the SD Card Association.

Publisher:

SD 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

Copyright Holder:

The SD Card Association

Notes:

This Simplified Specification is provided on a non-confidential basis subject to the disclaimers below. Any implementation of the Simplified Specification may require a license from the SD Card Association or other third parties.

Disclaimers:

The information contained in the Simplified Specification is presented only as a standard specification 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.

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Contents SD Specifications Part E1 Sdio Simplified Specification Sdio Simplified Specification Version Changes compared to previous issueDate Version Release of SD Simplified Specification Conventions Used in This Document Table of Contents SPI and SD 1-bit Mode Interrupts 16.2 Table of Tables Table of Figures Standard Sdio Functions Sdio FeaturesGeneral Description Primary Reference DocumentSdio Host Modes Sdio Signaling DefinitionSdio Card Types Sdio Card modesSignal connection to two 4-bit Sdio cards Signal PinsReset Sdio Card InitializationDifferences in I/O card Initialization Sdio Simplified Specification Version MEM=0 Card initialization flow in SD mode Sdio aware host Illegal Command F8=0 Card initialization flow in SPI mode Sdio aware host OCR bit Iosendopcond Command CMD5VDD Voltage Window Position OCR Values for CMD5Iosendopcond Response R4 Response R4 in SD modeRe-initialize both I/O and Memory Acceptable Commands after InitializationRecommendations for RCA after Reset Special Initialization considerations for Combo CardsRe-Initialization Flow for Memory controller Re-Initialization Flow for I/O ControllerEnabling CRC in SPI Combo Card Differences with SD Memory Specification Sdio Command ListUnsupported SD Memory Commands Reset for Sdio Modified R6 ResponseBus Width Card Detect Resistor States Card Detect ResistorTimings Combo Card 4-bit ControlRead Abort Data Transfer Block SizesData Transfer Abort Changes to SD Memory Fixed RegistersRCA Register OCR RegisterCID Register CSD RegisterSdio Status Register Structure ClearBit Identifier Type Value Description Iorwdirect Command CMD52 New I/O Read/Write Commands1 CMD52 Response SD modes ComcrcerrorIllegalcommand Iorwdirect Response R5TRN=Transfer DIS=DisabledIdentifier Type Value Description Clear Condition CMD=DAT lines freeCRC Iorwextended Command CMD53Iorw Extended command Op Code Definition OP code Command operation1 CMD53 Data Transfer Format Byte Count ValuesInterrupts Register Access TimeSdio Card Internal Operation OverviewSdio Fixed Internal Map Suspend/ResumeRead Wait CMD52 During Data TransferCard Common Control Registers Cccr Common I/O Area CIAIOE3 Card Common Control Registers CccrType CCCR/SDIOTo abort transfers to/from memory Scsi 4BLS Transaction of function 0 CIA Empc Cccr bit DefinitionsField Type Function Basic Registers FBRAddress Function Basic Information Registers FBRFBR bit and field definitions Sdio Simplified Specification Version Field TypeCard Information Structure CIS and reserved area of CIA Setting Block Size with CMD53Card Information Structure CIS Multiple Function Sdio CardsState Diagram for Bus State Machine Bus State DiagramCSA Access Embedded I/O Code Storage Area CSACSA Data Format Interrupt Timing Sdio InterruptsInterrupt Clear Timing Terminated Data Transfer Interrupt CycleSdio Suspend/Resume Operation Sdio Read Wait Operation Master Power Control Power ControlPower Control Overview Power Control support for Sdio CardsReference Tuples by Master Power Control and Power Select Power Control Support for the Sdio HostPower Selection High-Power TuplesPower Control Operation High-Speed Mode Sdio High-Speed ModeSwitching Bus Speed Mode in a Combo Card Sdio Physical Properties Sdio PowerSdio Simplified Specification Version Inrush Current Limiting Byte Order Within Tuples CIS FormatsCIS Reference Document Basic Tuple Format and Tuple Chain StructureCode Name Description Tuple VersionSdio Card Metaformat Tuples Supported by Sdio CardsCistplfuncid Function Identification Tuple Cistplmanfid Manufacturer Identification String TupleSdio Specific Extensions Cistplmanfid Manufacturer Identification TupleTplfidfunction Tuple for Function 0 common Cistplfunce Function Extension TupleCistplfunce Tuple General Structure Cistplfunce Tuple for Function 0 commonCistplfunce Tuple for Function Tplfidfunction Tuple for FunctionByte Sdio Simplified Specification Version Bit Name Tplfidfunction Field Descriptions for Functions10 Tplfefunctioninfo Definition 11 Tplfecsaproperty Definition13 Cistplsdioext Tuple Reserved for Sdio Cards Cistplsdiostd Function is a Standard Sdio Function12 Cistplsdiostd Tuple Reserved for Sdio Cards Cistplsdioext Tuple Reserved for Sdio CardsSD and SPI Command List Table A-14 SD Mode Command ListNormative Sdmem Sdio Table A-15 SPI Mode Command ListNormative References Appendix BAbbreviations and Terms Appendix CLOW, High Informative