Transmitter FIFO control register.
TX_TRIGGER_LEVEL | Trigger level. When the transmitter FIFO has less entries than the number of this field, a transmitter trigger event is generated. |
CLEAR | When ‘1’, the transmitter FIFO and transmitter shift register are cleared/invalidated. Invalidation will last for as long as this field is ‘1’. If a quick clear/invalidation is required, the field should be set to ‘1’ and be followed by a set to ‘0’. If a clear/invalidation is required for an extended time period, the field should be set to ‘1’ during the complete time period. |