Memory Card Specification Sheet

SDIO Simplified Specification Version 2.00

Appendix C

C.1 Abbreviations and Terms

3C The original 3 companies that established the SDA and the SD card

specification

ACMD Application CommanD An additional set of commands created to support SD

specific requirements.

Block A number of bytes, basic data transfer unit

CCCR Common Card Control Registers

CD Connect/Disconnect

CIA Common Information Area

CID Card IDentification number register

CIS Card Information Structure

CLK Clock signal

CMD Command line or SD bus command (if extended CMDXX)

Combo Card A card that includes both SDIO and SD memory

CRC Cyclic Redundancy Check

CS Chip or Card Select

CSA Code Storage Area

CSD Card Specific Data register

DAT[x] Data line where x is in the range of 0 to 3

DSR Driver Stage Register

ECC Error Correction Code

Embedded SDIO I/O or combo devices that are embedded in a host device that utilize the SDIO

electrical and command interface, but are not intended to be removed.

EMI Electro-Magnetic Interference

ESC External Signal Contacts

ESD Electro-Static Discharge

FAT File Allocation Table

FBR Function Basic Registers

FIFO First In-First Out buffer

Flash A type of multiple time programmable non volatile memory

Full-Size SDIO Card A SDIO card with physical dimensions based on SD Physical Specification

Version 1.01

Function An I/O device contained within an SDIO card

High-Power SDIO A SDIO device that requires up to 500 mA rather than the standard 200 mA

allowed for a Standard-Power SDIO device

hi-Z A three-state driver in the high-impedance state

Interrupt A signal from the SDIO device to the host signaling the need for attention

Interrupt Period The times that a card may generate an interrupt signal on the SD bus

Legacy Slot SD Slot that supports only the SD Physical Specification Version 1.01