Interrupt enable bits
| RX_START_INT_ENA | This is the interrupt enable bit for UHCI_RX_START_INT interrupt. |
| TX_START_INT_ENA | This is the interrupt enable bit for UHCI_TX_START_INT interrupt. |
| RX_HUNG_INT_ENA | This is the interrupt enable bit for UHCI_RX_HUNG_INT interrupt. |
| TX_HUNG_INT_ENA | This is the interrupt enable bit for UHCI_TX_HUNG_INT interrupt. |
| SEND_S_REG_Q_INT_ENA | This is the interrupt enable bit for UHCI_SEND_S_REQ_Q_INT interrupt. |
| SEND_A_REG_Q_INT_ENA | This is the interrupt enable bit for UHCI_SEND_A_REQ_Q_INT interrupt. |
| OUTLINK_EOF_ERR_INT_ENA | This is the interrupt enable bit for UHCI_OUTLINK_EOF_ERR_INT interrupt. |
| APP_CTRL0_INT_ENA | This is the interrupt enable bit for UHCI_APP_CTRL0_INT interrupt. |
| APP_CTRL1_INT_ENA | This is the interrupt enable bit for UHCI_APP_CTRL1_INT interrupt. |