cnt_rx_frame_mismatched_length
The statistic
cnt_rx_frame_mismatched_length reports the number of RX
frames where the physical payload length mismatches the value in the ETHERTYPE/LEN
field. This statistic register only increments after fulfilling all of the following
criteria:- RX Frame is not undersized
- RX Frame is not oversized
- RX Frame passed FSC check
- RX Frame has a physical payload size which is different from the value in the
ETHERTYPE/LEN field (The prerequisite is that the value in the "ETHERTYPE OR
LENGTH" field is ≤ 1500).Note: The value in the "ETHERTYPE OR LENGTH” field is interpreted as a length if the value is ≤ 1500.
This statistic updates at a clock cycle after the end of the frame. The RX_AXI_TUSER is
asserted to 1 as described in Mismatched Length RX Frame. The Figure 1 shows the cnt_rx_frame_mismatched_length statistic updates relative
to the RX frames at the AXI ST interface.
