SPRUJ17H March 2022 – October 2024 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1
The MII_RT module has the option to preserve and forward a received preamble in the TX data stream, use a preamble provided by the PRU, or auto-generate a preamble. These configurations are highlighted in Table 7-85.
RX_CUT_PREAMBLE | Determines whether RX preamble is passed to the RX L1/L2 FIFO |
RX_AUTO_FWD_PRE | Determines whether RX preamble is automatically passed to TX L1 FIFO |
TX_AUTO_PREAMBLE | TX interface logic auto-generates and appends preamble to TX data stream with the first push of data into the TX L1 FIFO. Note that enabling this option does fill the TX FIFO with the preamble length, hence software has to consider this to not overrun the TX FIFO. |