Tx Buffer Cancellation Finished Interrupt Enable
| CFIE0 | Cancellation Finished Interrupt Enable of Tx Buffer 0 |
| CFIE1 | Cancellation Finished Interrupt Enable of Tx Buffer 1 |
| CFIE2 | Cancellation Finished Interrupt Enable of Tx Buffer 2 |
| CFIE3 | Cancellation Finished Interrupt Enable of Tx Buffer 3 |
| CFIE4 | Cancellation Finished Interrupt Enable of Tx Buffer 4 |
| CFIE5 | Cancellation Finished Interrupt Enable of Tx Buffer 5 |
| CFIE6 | Cancellation Finished Interrupt Enable of Tx Buffer 6 |
| CFIE7 | Cancellation Finished Interrupt Enable of Tx Buffer 7 |
| CFIE8 | Cancellation Finished Interrupt Enable of Tx Buffer 8 |
| CFIE9 | Cancellation Finished Interrupt Enable of Tx Buffer 9 |
| CFIE10 | Cancellation Finished Interrupt Enable of Tx Buffer 10 |
| CFIE11 | Cancellation Finished Interrupt Enable of Tx Buffer 11 |
| CFIE12 | Cancellation Finished Interrupt Enable of Tx Buffer 12 |
| CFIE13 | Cancellation Finished Interrupt Enable of Tx Buffer 13 |
| CFIE14 | Cancellation Finished Interrupt Enable of Tx Buffer 14 |
| CFIE15 | Cancellation Finished Interrupt Enable of Tx Buffer 15 |
| CFIE16 | Cancellation Finished Interrupt Enable of Tx Buffer 16 |
| CFIE17 | Cancellation Finished Interrupt Enable of Tx Buffer 17 |
| CFIE18 | Cancellation Finished Interrupt Enable of Tx Buffer 18 |
| CFIE19 | Cancellation Finished Interrupt Enable of Tx Buffer 19 |
| CFIE20 | Cancellation Finished Interrupt Enable of Tx Buffer 20 |
| CFIE21 | Cancellation Finished Interrupt Enable of Tx Buffer 21 |
| CFIE22 | Cancellation Finished Interrupt Enable of Tx Buffer 22 |
| CFIE23 | Cancellation Finished Interrupt Enable of Tx Buffer 23 |
| CFIE24 | Cancellation Finished Interrupt Enable of Tx Buffer 24 |
| CFIE25 | Cancellation Finished Interrupt Enable of Tx Buffer 25 |
| CFIE26 | Cancellation Finished Interrupt Enable of Tx Buffer 26 |
| CFIE27 | Cancellation Finished Interrupt Enable of Tx Buffer 27 |
| CFIE28 | Cancellation Finished Interrupt Enable of Tx Buffer 28 |
| CFIE29 | Cancellation Finished Interrupt Enable of Tx Buffer 29 |
| CFIE30 | Cancellation Finished Interrupt Enable of Tx Buffer 30 |
| CFIE31 | Cancellation Finished Interrupt Enable of Tx Buffer 31 |