Interrupt Mask
| MODEMFAILMASK | Mode M Failure Mask |
| UNDERFLOWDETMASK | Underflow Detected Mask |
| INDIRECTOPDONEMASK | Indirect Complete Mask |
| INDIRECTREADREJECTMASK | Indirect Read Reject Mask |
| PROTWRATTEMPTMASK | Protected Area Write Attempt Mask |
| ILLEGALACCESSDETMASK | Illegal Access Detected Mask |
| INDIRECTXFERLEVELBREACHMASK | Transfer Watermark Breach Mask |
| RECVOVERFLOWMASK | Receive Overflow Mask |
| TXFIFONOTFULLMASK | Small TX FIFO Not Full Mask |
| TXFIFOFULLMASK | Small TX FIFO Full Mask |
| RXFIFONOTEMPTYMASK | Small RX FIFO Not Empty Mask |
| RXFIFOFULLMASK | Small RX FIFO Full Mask |
| INDRDSRAMFULLMASK | Indirect Read Partition Overflow Mask |
| POLLEXPINTMASK | Polling Expiration Detected Mask |
| STIGREQMASK | STIG Request Completion Mask |
| RXCRCDATAERRMASK | RX CRC Data Error Mask |
| RXCRCDATAVALMASK | RX CRC Data Valid Mask |
| TXCRCCHUNKBRKMASK | TX CRC Chunk Was Broken Mask |