Memory Card Specification Sheet

©Copyright 2000-2007 SD Card Association
SDIO Simplified Specification Version 2.00
29
Address Register Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0x00 CCCR/SDIO
Revision
SDIO
bit 3
SDIO
bit 2
SDIO
bit 1
SDIO
bit 0
CCCR
bit 3
CCCR
bit 2
CCCR
bit 1
CCCR
bit 0
0x01 SD Specification
Revision
RFU RFU RFU RFU SD
bit 3
SD
bit 2
SD
bit 1
SD
bit 0
0x02 I/O Enable
IOE7 IOE6 IOE5 IOE4 IOE3 IOE2 IOE1 RFU
0x03 I/O Ready
IOR7 IOR6 IOR5 IOR4 IOR3 IOR2 IOR1 RFU
0x04 Int Enable
IEN7 IEN6 IEN5 IEN4 IEN3 IEN2 IEN1
IENM
0x05
Int Pending
INT7 INT6 INT5 INT4 INT3 INT2 INT1 RFU
0x06 I/O Abort
RFU RFU RFU RFU RES AS2 AS1 AS0
0x07 Bus Interface
Control
CD
Disable
SCSI ECSI RFU RFU RFU
Bus
Width 1
Bus
Width 0
0x08 Card Capability
4BLS LSC E4MI S4MI SBS SRW SMB SDC
0x09-
0x0B
Common CIS
Pointer
Pointer to card’s common Card Information Structure (CIS)
0x0C Bus Suspend
RFU RFU RFU RFU RFU RFU BR BS
0x 0D Function Select
DF RFU RFU RFU FS3 FS2 FS1 FS0
0x 0E Exec Flags
EX7 EX6 EX5 EX4 EX3 EX2 EX1 EXM
0x 0F Ready Flags
RF7 RF6 RF5 RF4 RF3 RF2 RF1 RFM
0x10-
0x11
FN0 Block Size
I/O block size for Function 0
0x 12 Power Control
Reserved for Future Use (RFU) EMPC SMPC
0x 13 High-Speed
RFU RFU RFU RFU RFU RFU EHS SHS
0x14-
0xEF
RFU
Reserved for Future Use (RFU)
0xF0-
0xFF
Reserved for
Vendors
Area Reserved for Vendor Unique Registers
Table 6-1 Card Common Control Registers (CCCR)
Field Type Description
CCCRx R/O CCCR Format Version number. These 4 bits contain the version of the CCCR and
FBR format that this card supports. Any change to the CCCR and/or the FBR
structure shall cause a new version code to be assigned. The codes for the
CCCR/FBR formats are as follows:
Value CCCR/FBR Format Version
0x00 CCCR/FBR Version 1.00
0x01 CCCR/FBR Version 1.10
0x02 CCCR/FBR Version 1.20
0x03-0x0F Reserved for Future Use
SDIOx R/O SDIO Specification Revision number. These 4 bits contain the version of the SDIO
Specification that this card supports. The codes for the SDIO Specifications are as
follows:
Value SDIO Specification
0x00 SDIO Specification Version 1.00
0x01 SDIO Specification Version 1.10
0x02 SDIO Specification Version 1.20 (unreleased)
0x03 SDIO Specification Version 2.00
0x04-0x0F Reserved for Future Use