Endpoint Active Indication Register *1
| EP1_ACT | Indicates that Endpoint is currently active. |
| EP2_ACT | Indicates that Endpoint is currently active. |
| EP3_ACT | Indicates that Endpoint is currently active. |
| EP4_ACT | Indicates that Endpoint is currently active. |
| EP5_ACT | Indicates that Endpoint is currently active. |
| EP6_ACT | Indicates that Endpoint is currently active. |
| EP7_ACT | Indicates that Endpoint is currently active. |
| EP8_ACT | Indicates that Endpoint is currently active. |