Transmit Buffer Add Request Register
| AR0 | Add Request for Transmit Buffer 0 |
| AR1 | Add Request for Transmit Buffer 1 |
| AR2 | Add Request for Transmit Buffer 2 |
| AR3 | Add Request for Transmit Buffer 3 |
| AR4 | Add Request for Transmit Buffer 4 |
| AR5 | Add Request for Transmit Buffer 5 |
| AR6 | Add Request for Transmit Buffer 6 |
| AR7 | Add Request for Transmit Buffer 7 |
| AR8 | Add Request for Transmit Buffer 8 |
| AR9 | Add Request for Transmit Buffer 9 |
| AR10 | Add Request for Transmit Buffer 10 |
| AR11 | Add Request for Transmit Buffer 11 |
| AR12 | Add Request for Transmit Buffer 12 |
| AR13 | Add Request for Transmit Buffer 13 |
| AR14 | Add Request for Transmit Buffer 14 |
| AR15 | Add Request for Transmit Buffer 15 |
| AR16 | Add Request for Transmit Buffer 16 |
| AR17 | Add Request for Transmit Buffer 17 |
| AR18 | Add Request for Transmit Buffer 18 |
| AR19 | Add Request for Transmit Buffer 19 |
| AR20 | Add Request for Transmit Buffer 20 |
| AR21 | Add Request for Transmit Buffer 21 |
| AR22 | Add Request for Transmit Buffer 22 |
| AR23 | Add Request for Transmit Buffer 23 |
| AR24 | Add Request for Transmit Buffer 24 |
| AR25 | Add Request for Transmit Buffer 25 |
| AR26 | Add Request for Transmit Buffer 26 |
| AR27 | Add Request for Transmit Buffer 27 |
| AR28 | Add Request for Transmit Buffer 28 |
| AR29 | Add Request for Transmit Buffer 29 |
| AR30 | Add Request for Transmit Buffer 30 |
| AR31 | Add Request for Transmit Buffer 31 |