Queue Status Level Register
| CMD_QUEUE_EMPTY_LOC | Command Queue Empty Locations This field contains the number of empty locations in the command buffer. |
| RESP_BUF_BLR | Response Buffer Level Value This field contains the number of valid data entries in the response buffer. |
| IBI_BUF_BLR | IBI Buffer Level Value This field contains the number of valid IBI status entries in the IBI buffer. This field is used in Master mode of operation. |