Present State.
| CMD | Command Inhibit (CMD). |
| DAT | Command Inhibit (DAT). |
| DAT_LINE_ACTIVE | DAT Line Active. |
| RETUNING | Re-Tuning Request. |
| WRITE_TRANSFER | Write Transfer Active. |
| READ_TRANSFER | Read Transfer Active. |
| BUFFER_WRITE | Buffer Write Enable. |
| BUFFER_READ | Buffer Read Enable. |
| CARD_INSERTED | Card Inserted. |
| CARD_STATE | Card State Stable. |
| CARD_DETECT | Card Detect Pin Level. |
| WP | Write Protect Switch Pin Level. |
| DAT_SIGNAL_LEVEL | DAT[3:0] Line Signal Level. |
| CMD_SIGNAL_LEVEL | CMD Line Signal Level. |