Signal Pins | SDI Technologies SDIO Card specification

©Copyright 2000-2007 SD Card Association

SDIO Simplified Specification Version 2.00

2.4Signal Pins

CLK

CMD

DAT[3:0]

SD Host

CLK

CMD

DAT[3:0]

SD I/O Card

SD I/O Card

Figure 2-1 Signal connection to two 4-bit SDIO cards

The rest of this chapter is not included in the Simplified Specification.

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Image 12

SDI Technologies SDIO Card manual Signal Pins, Signal connection to two 4-bit Sdio cards

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 Functions Sdio Signaling Definition Sdio Card TypesSdio Card modes Sdio Host Modes Signal Pins Signal connection to two 4-bit Sdio cards Reset 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 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 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 States Data Transfer Block Sizes Data Transfer AbortChanges to SD Memory Fixed Registers Read Abort OCR Register CID RegisterCSD Register RCA Register Sdio Status Register Structure ClearBit Identifier Type Value Description 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 Access Embedded I/O Code Storage Area CSACSA Data Format 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 High-Speed Mode Sdio High-Speed ModeSwitching Bus Speed Mode in a Combo Card 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 Cistplfunce Tuple for Function Tplfidfunction Tuple for FunctionByte 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 SD and SPI Command List Table A-14 SD Mode Command ListNormative Table A-15 SPI Mode Command List Sdmem Sdio Appendix B Normative References Appendix C Abbreviations and Terms LOW, High Informative