34.6.4 DMA, Interrupts and Events
| Condition | Request | ||
|---|---|---|---|
| DMA | Interrupt | Event | |
|
Standard (DRE): Data Register Empty FIFO (DRE): at least TXTRHOLD locations in TX FIFO are empty | Yes (request cleared when data is written) | Yes | NA |
|
Standard (RXC): Receive Complete FIFO (RXC): at least RXTRHOLD data available in RX FIFO, or a last word available and length frame reception completed. | Yes (request cleared when data is read) | Yes | |
|
Standard (TXC): Transmit Complete FIFO (TXC): Transmit Complete and TX FIFO is empty | NA | Yes | |
| Receive Start (RXS) | NA | Yes | |
| Clear to Send Input Change (CTSIC) | NA | Yes | |
| Receive Break (RXBRK) | NA | Yes | |
| Error (ERROR) | NA | Yes | |