SanDisk SDSDH-1024 Product Manual - Page 76
Command Description
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Revision 2.2 Chapter 4 - SD Card Protocol Description SanDisk SD Card Product Manual 4.8.4 Class CMD 0 Basic 1 2 R Block Read 34 R Block Write CMD28 CMD29 CMD30 CMD32 CMD33 CMD3421 to CMD37 CMD38 CMD42 CMD5022 CMD52 CMD53 CMD55 CMD56 CMD5723 ACMD6 ACMD13 ACMD22 ACMD41 ACMD42 ACMD51 R = Reserved 5 Erase + + + 6 Write Protec tion + + + 7 8 Lock AppCard Specific + 9 I/O Mode + + 10 11 Switch R + + Command Description All future reserved commands and their responses must be 48 bits long. Responses may not have any response. Table 4-16 details the SD Card bus commands. Table 4-16 SD Card Bus Command Descriptions CMD Index Type Argument Resp. Abbreviation Description Basic Commands (Class 0) CMD0 CMD1 CMD2 bc [31:0] stuff bits Reserved bcr [31:0]stuff bits --- GO_IDLE_STATE R2 ALL_SEND_CID Reset all cards to Idle State. Asks all cards to send their CID numbers on the CMD line. 21This command is newly defined in SD Card Physical Description Spec. v1.10 . 22 Ibid. 23 Ibid. © 2004 SanDisk Corporation 4-32 12/08/04