| Enumerator |
|---|
| GO_IDLE_STATE | Resets the SD memory card.
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| SEND_OP_COND | Sends host capacity support information and activates the card's initialization process.
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| ALL_SEND_CID | Asks any card connected to the host to send the CID numbers on the CMD line.
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| SET_REL_ADDR | Asks the card to publish a new relative address (RCA).
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| SET_DSR | Programs the DSR of all cards.
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| SEN_OP_COND | Sends host capacity support information (HCS) and asks the accessed card to send its operating condition register (OCR) content in the response on the CMD line.
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| HS_SWITCH | Checks switchable function (mode 0) and switch card function (mode 1).
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| SEL_DESEL_CARD | Selects the card by its own relative address and gets deselected by any other address.
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| HS_SEND_EXT_CSD | Sends SD Memory Card interface condition, which includes host supply voltage information and asks the card whether card supports voltage.
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| SEND_CSD | Addressed card sends its card specific data (CSD) on the CMD line.
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| SEND_CID | Addressed card sends its card identification (CID) on the CMD line.
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| READ_DAT_UNTIL_STOP | SD card doesn't support it.
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| STOP_TRANSMISSION | Forces the card to stop transmission.
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| SEND_STATUS | Addressed card sends its status register.
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| HS_BUSTEST_READ | Reserved.
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| GO_INACTIVE_STATE | Sends an addressed card into the inactive state.
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| SET_BLOCKLEN | Sets the block length (in bytes for SDSC) for all following block commands (read, write, lock). Default block length is fixed to 512 Bytes. Not effective for SDHS and SDXC.
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| READ_SINGLE_BLOCK | Reads single block of size selected by SET_BLOCKLEN in case of SDSC, and a block of fixed 512 bytes in case of SDHC and SDXC.
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| READ_MULT_BLOCK | Continuously transfers data blocks from card to host until interrupted by STOP_TRANSMISSION command.
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| HS_BUSTEST_WRITE | 64 bytes tuning pattern is sent for SDR50 and SDR104.
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| WRITE_DAT_UNTIL_STOP | Speed class control command.
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| SET_BLOCK_COUNT | Specify block count for CMD18 and CMD25.
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| WRITE_SINGLE_BLOCK | Writes single block of size selected by SET_BLOCKLEN in case of SDSC, and a block of fixed 512 bytes in case of SDHC and SDXC.
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| WRITE_MULT_BLOCK | Continuously writes blocks of data until a STOP_TRANSMISSION follows.
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| PROG_CID | Reserved for manufacturers.
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| PROG_CSD | Programming of the programmable bits of the CSD.
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| SET_WRITE_PROT | Sets the write protection bit of the addressed group.
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| CLR_WRITE_PROT | Clears the write protection bit of the addressed group.
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| SEND_WRITE_PROT | Asks the card to send the status of the write protection bits.
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| SD_ERASE_GRP_START | Sets the address of the first write block to be erased. (For SD card only).
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| SD_ERASE_GRP_END | Sets the address of the last write block of the continuous range to be erased.
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| ERASE_GRP_START | Sets the address of the first write block to be erased. Reserved for each command system set by switch function command (CMD6).
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| ERASE_GRP_END | Sets the address of the last write block of the continuous range to be erased. Reserved for each command system set by switch function command (CMD6).
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| ERASE | Reserved for SD security applications.
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| FAST_IO | SD card doesn't support it (Reserved).
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| GO_IRQ_STATE | SD card doesn't support it (Reserved).
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| LOCK_UNLOCK | Sets/resets the password or lock/unlock the card. The size of the data block is set by the SET_BLOCK_LEN command.
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| APP_CMD | Indicates to the card that the next command is an application specific command rather than a standard command.
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| GEN_CMD | Used either to transfer a data block to the card or to get a data block from the card for general purpose/application specific commands.
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| NO_CMD | No command.
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1.9.0