cnt_rx_frame_error_fcs

The statistic cnt_rx_frame_error_fcs reports the number of RX frames with CRC error. This statistic only increments after fulfilling all of the following criteria:
  • RX Frame is not undersized
  • RX Frame is not oversized
  • RX Frame contains CRC error

When this statistic register increments, the RX statistic register cnt_rx_mismatched_length remains unchanged.

This statistic updates at a clock cycle after the end of the frame. The RX_AXI_TUSER is asserted to 1 as described in Frame Check Sequence (FCS) Error. Figure 1 shows the cnt_rx_frame_error_fcs statistic updates relative to the RX frames at the AXI ST interface.

Figure 1. RX Statistic – RX Frame with FCS Error