Host Pipe Mask Register (n = 0)
| RXINE | Received IN Data Interrupt Enable |
| TXOUTE | Transmitted OUT Data Interrupt Enable |
| TXSTPE | Transmitted SETUP Interrupt Enable |
| PERRE | Pipe Error Interrupt Enable |
| NAKEDE | NAKed Interrupt Enable |
| OVERFIE | Overflow Interrupt Enable |
| RXSTALLDE | Received STALLed Interrupt Enable |
| SHORTPACKETIE | Short Packet Interrupt Enable |
| NBUSYBKE | Number of Busy Banks Interrupt Enable |
| FIFOCON | FIFO Control |
| PDISHDMA | Pipe Interrupts Disable HDMA Request Enable |
| PFREEZE | Pipe Freeze |
| RSTDT | Reset Data Toggle |