SDI Technologies SDIO Card manual LOW, High

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	©Copyright 2000-2007 SD Card Association
SDIO Simplified Specification Version 2.00
LOW, HIGH	Binary interface states with defined assignment to a voltage level
MBIO	Multi-Block I/O
miniSDIO Card	A SDIO card based on the miniSD card form factor.
MMC	MultiMedia Card
MSB, LSB	The Most Significant Bit or Least Significant Bit
OCR	Operation Conditions Register
PCMCIA	Personal Computer Memory Card International Association
PnP	Plug and Play a means to identify an SDIO device and optionally load
	applications and/or drivers without user intervention
R/O	Read Only
R/W	Read or Write
RAW	Read After Write
RCA	Relative Card Address register
Resume	Re-starting the temporarily halted data transfer
RFU	Reserved for Future Use. Normally Read-Only and set to 0
ROM	Read Only Memory
RWC	Read Wait Control
SCR	SD Configuration Register
SDA	SD Association
SDCLK	SD clock signal
SDIO	SD Input/Output
SDIO aware	A host designed to support the signals and protocol of SDIO devices
SPI	Serial Peripheral Interface
Standard-Power SDIO	A SDIO device that operates with 200 mA or less of current at all times.
Stuff bit(s)	Filling bit(s) to ensure fixed length frames for commands and responses.
Suspend	Temporarily halting the transfer of data
TBD	To Be Determined (in the future)
Three-state driver	A driver stage which has three output driver states: HIGH, LOW and high
	impedance (which means that the interface does not have any influence on the
	interface level)
Tuple	Data blocks in a linked list or chain format
VDD	+ Power supply
VSS	Power supply ground
W/O	Write Only
WP	Write Protect

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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 Sdio Features General DescriptionPrimary Reference Document Standard Sdio FunctionsSdio Signaling Definition Sdio Card TypesSdio Card modes Sdio Host ModesSignal Pins Signal connection to two 4-bit Sdio cardsReset 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 Iosendopcond Command CMD5 VDD Voltage Window PositionOCR Values for CMD5 OCR bitResponse R4 in SD mode Iosendopcond Response R4Acceptable Commands after Initialization Recommendations for RCA after ResetSpecial Initialization considerations for Combo Cards Re-initialize both I/O and MemoryRe-Initialization Flow for I/O Controller Re-Initialization Flow for Memory 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 TimingsCombo Card 4-bit Control Card Detect Resistor StatesData Transfer Block Sizes Data Transfer AbortChanges to SD Memory Fixed Registers Read AbortOCR Register CID RegisterCSD Register RCA RegisterSdio Status Register Structure ClearBit Identifier Type Value Description New I/O Read/Write Commands Iorwdirect Command CMD52Comcrcerror IllegalcommandIorwdirect Response R5 1 CMD52 Response SD modesDIS=Disabled Identifier Type Value Description Clear ConditionCMD=DAT lines free TRN=TransferIorwextended Command CMD53 Iorw Extended command Op Code DefinitionOP code Command operation CRCByte Count Values 1 CMD53 Data Transfer FormatRegister Access Time Sdio Card Internal OperationOverview InterruptsSuspend/Resume Read WaitCMD52 During Data Transfer Sdio Fixed Internal MapCommon I/O Area CIA Card Common Control Registers CccrCard Common Control Registers Cccr TypeCCCR/SDIO IOE3To abort transfers to/from memory Scsi 4BLS Transaction of function 0 CIA Cccr bit Definitions EmpcFunction Basic Registers FBR AddressFunction Basic Information Registers FBR Field TypeSdio Simplified Specification Version Field Type FBR bit and field definitionsSetting Block Size with CMD53 Card Information Structure CISMultiple Function Sdio Cards Card Information Structure CIS and reserved area of CIABus State Diagram State Diagram for Bus State MachineCSA Access Embedded I/O Code Storage Area CSACSA Data Format Sdio Interrupts Interrupt TimingTerminated Data Transfer Interrupt Cycle Interrupt Clear TimingSdio Suspend/Resume Operation Sdio Read Wait Operation Power Control Power Control OverviewPower Control support for Sdio Cards Master Power ControlPower Control Support for the Sdio Host Power SelectionHigh-Power Tuples Reference Tuples by Master Power Control and Power SelectPower Control Operation High-Speed Mode Sdio High-Speed ModeSwitching Bus Speed Mode in a Combo Card Sdio Power Sdio Physical PropertiesSdio Simplified Specification Version Inrush Current Limiting CIS Formats CIS Reference DocumentBasic Tuple Format and Tuple Chain Structure Byte Order Within TuplesTuple Version Sdio Card MetaformatTuples Supported by Sdio Cards Code Name DescriptionCistplmanfid Manufacturer Identification String Tuple Sdio Specific ExtensionsCistplmanfid Manufacturer Identification Tuple Cistplfuncid Function Identification TupleCistplfunce Function Extension Tuple Cistplfunce Tuple General StructureCistplfunce Tuple for Function 0 common Tplfidfunction Tuple for Function 0 commonCistplfunce Tuple for Function Tplfidfunction Tuple for FunctionByte Sdio Simplified Specification Version Tplfidfunction Field Descriptions for Functions 10 Tplfefunctioninfo Definition11 Tplfecsaproperty Definition Bit NameCistplsdiostd Function is a Standard Sdio Function 12 Cistplsdiostd Tuple Reserved for Sdio CardsCistplsdioext Tuple Reserved for Sdio Cards 13 Cistplsdioext Tuple Reserved for Sdio CardsSD and SPI Command List Table A-14 SD Mode Command ListNormative Table A-15 SPI Mode Command List Sdmem SdioAppendix B Normative ReferencesAppendix C Abbreviations and TermsLOW, High Informative