SMC NFC Status Register
| SMCSTS | NAND Flash Controller status (this field cannot be reset) |
| RB_RISE | Selected Ready Busy Rising Edge Detected |
| RB_FALL | Selected Ready Busy Falling Edge Detected |
| NFCBUSY | NFC Busy (this field cannot be reset) |
| NFCWR | NFC Write/Read Operation (this field cannot be reset) |
| NFCSID | NFC Chip Select ID (this field cannot be reset) |
| XFRDONE | NFC Data Transfer Terminated |
| CMDDONE | Command Done |
| DTOE | Data Timeout Error |
| UNDEF | Undefined Area Error |
| AWB | Accessing While Busy |
| NFCASE | NFC Access Size Error |
| RB_EDGE0 | Ready/Busy Line 0 Edge Detected |