RX FIFO control
| TRIGGER_LEVEL | Trigger level. When the RX FIFO has more entries than the number of this field, a receiver trigger event is generated. Note: software can configure up to 253 in I2S mode or Left Justified (RX_CTL.I2S_MODE = ‘0’ or ‘1’). In TDM mode (RX_CTL.I2S_MODE = ‘2’ or ‘3’), it can configure up to [256 - (RX_CTL.CH_NR+2)]. |
| CLEAR | When ‘1’, the RX FIFO and RX_BUF 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. |
| FREEZE | When ‘1’, hardware writes to the RX FIFO have no effect. Freeze will not advance the RX FIFO write pointer. This field is used only for debugging purposee. |