©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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SDI Technologies SDIO Card manual LOW, High