CMDTP=0, TRSTP=0, CMD12AT=00, CMDRW=0, RSPTP=others, ACMD=others
Command Type Register
| CMDIDX | Command Index These bits specify Command Format[45:40] (command index). [Examples] CMD6: SD_CMD[7:0] = 8’b00_000110 CMD18: SD_CMD[7:0] = 8’b00_010010 ACMD13: SD_CMD[7:0] = 8’b01_001101 |
| ACMD | Command Type Select 0 (00): CMD 0 (others): Setting prohibited 1 (01): ACMD |
| RSPTP | Mode/Response Type NOTE: As some commands cannot be used in normal mode, see section 1.4.10, Example of SD_CMD Register Setting to select mode/response type. 0 (000): Normal mode The response type and the transfer mode are selected by SD_CMD[7:0], and the SD_CMD[15:11] setting is disabled. 0 (others): Settings prohibited. 3 (011): Expansion mode and no response 4 (100): Expansion mode and R1, R5, R6, or R7 response 5 (101): Expansion mode and R1b response 6 (110): Expansion mode and R2 response 7 (111): Expansion mode and R3 or R4 response |
| CMDTP | Data Mode (Command Type) 0 (0): Command does not include data transfer (bc, bcr, or ac) 1 (1): Command includes data transfer (adtc) |
| CMDRW | Write/Read Mode (enabled when the command with data is handled) 0 (0): Write (SD/MMC host interface -> SD card/MMC) 1 (1): Read (SD/MMC host interface <- SD card/MMC) |
| TRSTP | Single/Multiple Block Transfer (enabled when the command with data is handled) 0 (0): Single block transfer 1 (1): Multiple block transfer |
| CMD12AT | Multiple Block Transfer Mode (enabled at multiple block transfer) 0 (00): CMD12 is automatically issued at multiple block transfer. 1 (01): CMD12 is not automatically issued at multiple block transfer. 2 (10): Setting prohibited 3 (11): Setting prohibited |
| Reserved | These bits are read as 0000000000000000. The write value should be 0000000000000000. |