ATACS=NORMAL, MAXLAT=5, SPCMD=STD, OPDCMD=PUSHPULL, TRTYP=SINGLE, IOSPCMD=STD, TRDIR=WRITE, TRCMD=NO_DATA, RSPTYP=NORESP
Command Register
| CMDNB | Command Number |
| RSPTYP | Response Type 0 (NORESP): No response. 1 (48_BIT): 48-bit response. 2 (136_BIT): 136-bit response. 3 (R1B): R1b response type |
| SPCMD | Special Command 0 (STD): Not a special CMD. 1 (INIT): Initialization CMD:74 clock cycles for initialization sequence. 2 (SYNC): Synchronized CMD:Wait for the end of the current data block transfer before sending the pending command. 3 (CE_ATA): CE-ATA Completion Signal disable Command.The host cancels the ability for the device to return a command completion signal on the command line. 4 (IT_CMD): Interrupt command:Corresponds to the Interrupt Mode (CMD40). 5 (IT_RESP): Interrupt response:Corresponds to the Interrupt Mode (CMD40). 6 (BOR): Boot Operation Request.Start a boot operation mode, the host processor can read boot data from the MMC device directly. 7 (EBO): End Boot Operation.This command allows the host processor to terminate the boot operation mode. |
| OPDCMD | Open Drain Command 0 (PUSHPULL): Push pull command. 1 (OPENDRAIN): Open drain command. |
| MAXLAT | Max Latency for Command to Response 0 (5): 5-cycle max latency. 1 (64): 64-cycle max latency. |
| TRCMD | Transfer Command 0 (NO_DATA): No data transfer 1 (START_DATA): Start data transfer 2 (STOP_DATA): Stop data transfer |
| TRDIR | Transfer Direction 0 (WRITE): Write. 1 (READ): Read. |
| TRTYP | Transfer Type 0 (SINGLE): MMC/SDCard Single Block 1 (MULTIPLE): MMC/SDCard Multiple Block 2 (STREAM): MMC Stream 4 (BYTE): SDIO Byte 5 (BLOCK): SDIO Block |
| IOSPCMD | SDIO Special Command 0 (STD): Not an SDIO Special Command 1 (SUSPEND): SDIO Suspend Command 2 (RESUME): SDIO Resume Command |
| ATACS | ATA with Command Completion Signal 0 (NORMAL): Normal operation mode. 1 (COMPLETION): This bit indicates that a completion signal is expected within a programmed amount of time (HSMCI_CSTOR). |
| BOOT_ACK | Boot Operation Acknowledge. |