CTOP=others, TOP=others, WIDTH=0, TOUTMASK=0
SD Card Access Control Option Register
| CTOP | Card Detect Time Counter 0 (others): IMCLK x 2^(CTOP+10) 15 (1111): Setting prohibited |
| TOP | Timeout Counter 0 (others): SDHI clock x 2^(TOP+13) 15 (1111): Setting prohibited |
| TOUTMASK | Timeout MASK When timeout occurs in case of inactivating timeout, software reset should be executed to terminate command sequence. 0 (0): Activate Timeout 1 (1): Inactivate Timeout(RSPTO bit and DTO bit of SD_INFO2 and SD_ERR_STS2 won’t be set) |
| Reserved | These bits are read as 0000. The write value should be 0000. |
| WIDTH8 | Bus Width see b15, WIDTH bit |
| Reserved | This bit is read as 1. The write value should be 1. |
| WIDTH | Bus Width NOTE: The initial value is applied at a reset and when the SOFT_RST.SDRST flag is 0. 0 (0): 4-bit width (WIDTH8=0) / Setting prohibited (WIDTH8=1) 1 (1): 1-bit width (WIDTH8=0 or 1 ) |
| Reserved | These bits are read as 0000000000000000. The write value should be 0000000000000000. |