DIS=Disabled, CMD=DAT lines free | SDI Technologies SDIO Card

©Copyright 2000-2007 SD Card Association

SDIO Simplified Specification Version 2.00

Bits	Identifier	Type	Value		Description	Clear
						Condition
5-4	IO_CURRENT_STATE	S	00=DIS	DIS=Disabled:		B
			01=CMD	Initialize, Standby and Inactive
			02=TRN	States (card not selected)
			03=RFU	CMD=DAT lines free:
				1.	Command waiting (No
					transaction suspended)
				2.	Command waiting (All
					CMD53 transactions
					suspended)
				3. Executing CMD52 in CMD
					State
				TRN=Transfer:
				Command executing with data
				transfer using DAT[0] or DAT[3:0]
				lines
3	ERROR	E R	’0’= no error	A general or an unknown error		C
		E R X	’1’= error	occurred during the operation.
				Type “E R” shall be used for
				CMD52
				Type “E R X” shall be used for
				CMD53
2	RFU	--	Fixed at 0	Reserved for Future Use		C
1	FUNCTION_NUMBER	E R	’0’= no error	An invalid function number was		C
			’1’= error	requested
0	OUT_OF_RANGE	E R	’0’= no error	The command’s argument was out		C
			’1’= error	of the allowed range for this card.

Table 5-1 Flag data for IO_RW_DIRECT SD Response

5.2.2R5, IO_RW_DIRECT Response (SPI mode)

The SDIO card’s response to CMD52 in the SPI mode is shown in Figure 5-3. If the operation was a read command, the data being read is returned as an 8-bit value. In addition, 8 bits of status information is returned in a SPI R1 response byte as described in Fig 47 of the SD Physical Specification modified for I/O as shown in Figure 5-3.

0 0 0 R/W Data (8 Bits)

1 = in idle state RFU (always 0)

1 = illegal command

1 = COM CRC error

1 = Function number error RFU (always 0)

1 = parameter error Start Bit (always 0)

Figure 5-3 IO_RW_DIRECT Response in SPI Mode

Note the read/write (R/W) data is identical to the read/write data described for the SD R5 response (see 5.2.1). Parameter error status in SPI mode corresponds to OUT_OF_RANGE and ERROR in the SD mode response. In the case of CMD53, Data Error Token should also be used to indicate OUT_OF_RANGE and ERROR.

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Image 32

SDI Technologies SDIO Card manual Identifier Type Value Description Clear Condition, DIS=Disabled, CMD=DAT lines free

Contents

SD Specifications Part E1 Sdio Simplified Specification Date Version Sdio Simplified Specification VersionChanges compared to previous issue 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 Functions Sdio Signaling Definition Sdio Card TypesSdio Card modes Sdio Host Modes Signal Pins Signal connection to two 4-bit Sdio cards Differences in I/O card Initialization ResetSdio 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 bit Response R4 in SD mode Iosendopcond Response R4 Acceptable Commands after Initialization Recommendations for RCA after ResetSpecial Initialization considerations for Combo Cards Re-initialize both I/O and Memory Re-Initialization Flow for I/O Controller Re-Initialization Flow for Memory controller Enabling CRC in SPI Combo Card Unsupported SD Memory Commands Differences with SD Memory SpecificationSdio Command List Bus Width Reset for SdioModified R6 Response Card Detect Resistor TimingsCombo Card 4-bit Control Card Detect Resistor States Data Transfer Block Sizes Data Transfer AbortChanges to SD Memory Fixed Registers Read Abort OCR Register CID RegisterCSD Register RCA Register Bit Identifier Type Value Description Sdio Status Register StructureClear New I/O Read/Write Commands Iorwdirect Command CMD52 Comcrcerror IllegalcommandIorwdirect Response R5 1 CMD52 Response SD modes DIS=Disabled Identifier Type Value Description Clear ConditionCMD=DAT lines free TRN=Transfer Iorwextended Command CMD53 Iorw Extended command Op Code DefinitionOP code Command operation CRC Byte Count Values 1 CMD53 Data Transfer Format Register Access Time Sdio Card Internal OperationOverview Interrupts Suspend/Resume Read WaitCMD52 During Data Transfer Sdio Fixed Internal Map Common I/O Area CIA Card Common Control Registers Cccr Card Common Control Registers Cccr TypeCCCR/SDIO IOE3 To abort transfers to/from memory Scsi 4BLS Transaction of function 0 CIA Cccr bit Definitions Empc Function Basic Registers FBR AddressFunction Basic Information Registers FBR Field Type Sdio Simplified Specification Version Field Type FBR bit and field definitions Setting Block Size with CMD53 Card Information Structure CISMultiple Function Sdio Cards Card Information Structure CIS and reserved area of CIA Bus State Diagram State Diagram for Bus State Machine CSA Data Format CSA AccessEmbedded I/O Code Storage Area CSA Sdio Interrupts Interrupt Timing Terminated Data Transfer Interrupt Cycle Interrupt Clear Timing Sdio Suspend/Resume Operation Sdio Read Wait Operation Power Control Power Control OverviewPower Control support for Sdio Cards Master Power Control Power Control Support for the Sdio Host Power SelectionHigh-Power Tuples Reference Tuples by Master Power Control and Power Select Power Control Operation Switching Bus Speed Mode in a Combo Card High-Speed ModeSdio High-Speed Mode Sdio Power Sdio Physical Properties Sdio Simplified Specification Version Inrush Current Limiting CIS Formats CIS Reference DocumentBasic Tuple Format and Tuple Chain Structure Byte Order Within Tuples Tuple Version Sdio Card MetaformatTuples Supported by Sdio Cards Code Name Description Cistplmanfid Manufacturer Identification String Tuple Sdio Specific ExtensionsCistplmanfid Manufacturer Identification Tuple Cistplfuncid Function Identification Tuple Cistplfunce Function Extension Tuple Cistplfunce Tuple General StructureCistplfunce Tuple for Function 0 common Tplfidfunction Tuple for Function 0 common Byte Cistplfunce Tuple for FunctionTplfidfunction Tuple for Function Sdio Simplified Specification Version Tplfidfunction Field Descriptions for Functions 10 Tplfefunctioninfo Definition11 Tplfecsaproperty Definition Bit Name Cistplsdiostd Function is a Standard Sdio Function 12 Cistplsdiostd Tuple Reserved for Sdio CardsCistplsdioext Tuple Reserved for Sdio Cards 13 Cistplsdioext Tuple Reserved for Sdio Cards Normative SD and SPI Command ListTable A-14 SD Mode Command List Table A-15 SPI Mode Command List Sdmem Sdio Appendix B Normative References Appendix C Abbreviations and Terms LOW, High Informative