©Copyright 2000-2007 SD Card Association

SDIO Simplified Specification Version 2.00

 

 

Table of Figures

 

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

3

Figure 3-1 SDIO response to non-I/O aware initialization

4

Figure 3-2 Card initialization flow in SD mode (SDIO aware host)

7

Figure 3-3 Card initialization flow in SPI mode (SDIO aware host)

9

Figure 3-4 IO_SEND_OP_COND Command (CMD5)

10

Figure 3-5 Response R4 in SD mode

11

Figure 3-6 Response R4 in SPI mode

11

Figure 3-7 Modified R1 Response

11

Figure 3-8 Re-Initialization Flow for I/O Controller

13

Figure 3-9

Re-Initialization Flow for Memory controller

13

Figure 5-1 IO_RW_DIRECT Command

21

Figure 5-2 R5 IO_RW_DIRECT Response (SD modes)

22

Figure 5-3

IO_RW_DIRECT Response in SPI Mode

23

Figure 5-4 IO_RW_EXTENDED Command

24

Figure 6-1

SDIO Internal Map

28

Figure 6-2

State Diagram for Bus State Machine

38

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SDI Technologies SDIO Card manual Table of Figures