SanDisk SDSDH-1024 Product Manual - Page 77

Revision 2.2 Chapter 4 - SD Card Protocol Description SanDisk SD Card Product Manual CMD Index CMD3 CMD4 CMD5 CMD7 Type Argument Resp. Abbreviation bcr [31:0]stuff bits R6 SEND_RELATIVE_ADDR bcr [31:0]stuff bits --- SET_DSR Reserved for I/O cards (refer to the SDIO Card Specification) ac [31:16]RCA R1b SELECT/DESELECT_CARD [15:0] don't (from care selected card only) CMD8 Reserved CMD9 ac [31:16]RCA R2 SEND_CSD [15:0] stuff bits CMD10 ac [31:16]RCA R2 SEND_CID [15:0] stuff bits CMD11 Reserved CMD12 ac [31:0] stuff bits R1b STOP_TRANSMISSION CMD13 ac [31:16]RCA R1 SEND_STATUS [15:0] stuff bits CMD14 Reserved CMD15 ac [31:16]RCA --- GO_INACTIVE_STATE [15:0] stuff bits Block Read Commands (Class 2) CMD16 ac [31:0] block R1 SET_BLOCKLEN length Description Asks the card to publish a new relative address Programs the DSR of all cards Toggles card between the stand-by and transfer states -orprogramming and disconnect states. In both cases, the card is selected by its own relative address and deselected by any other address; address 0 deselects all. If the RCA=0, the host may do one of the following: >>Use other RCA number to perform card de-selection. >>Re-send CMD3 to change its RCA number to other than 0 and use CMD7 w/RCA=0 for card de-selection Sends addressed card's card-specific data (CSD) on the CMD line. Sends addressed card's card identification (CID) on the CMD line. Forces the card to stop transmission. Sends addressed card's Status Register. Sets the card to inactive state. Sets the block length (in bytes) for all following block commands (read, write, lock). Default block length is fixed 512Bytes. If block length is set bigger than 512Bytes, the card will set the BLOCK_LEN_ERROR bit. Supported only if Partial block RD/WR operation are allowed in © 2004 SanDisk Corporation 4-33 12/08/04