| Value | Description |
|---|---|
| 0 | AW channel valid until first data is written. |
| 1 | AW channel acknowledged until first data is written. |
| 2 | AW channel valid until last data is written. |
| 3 | AW channel acknowledged until last data is written. |
| 4 | AW channel valid until BRESP is acknowledged. |
| 5 | AW channel acknowledged until BRESP is acknowledged. |