H-Tile Hard IP Ethernet Intel® FPGA IP User Guide: Stratix® 10 Devices

ID 683430
Date 4/09/2024
Public

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Document Table of Contents

B.7.77. RX Packets that were dropped due to error (upper 32 bits)

RX Packets that were dropped due to error
Records the number of RX packets that were dropped due to errors
  • When RX MAC Configuration register bit en_strict_preamble=1, RX packets where bytes 6:1 of the preamble do not match the Ethernet Standard Preamble byte (8'h55) are dropped
  • When RX MAC Configuration register bit en_check_sfd=1, RX packets where the SFD byte does not match the Ethernet Standard SFD byte (8'hd5) are dropped
  • When EHIP RX MAC Feature Configuration bit en_pp=0 and RX CRC Forwarding bit forward_rx_crc=0, RX packets shorter than 21 bytes are dropped
  • When EHIP RX MAC Feature Configuration bit en_pp=0 and RX CRC Forwarding bit forward_rx_crc=1, RX packets shorter than 17 bytes are dropped
  • When EHIP RX MAC Feature Configuration bit en_pp=1 and RX CRC Forwarding bit forward_rx_crc=0, RX packets shorter than 13 bytes are dropped
  • When EHIP RX MAC Feature Configuration bit en_pp=1 and RX CRC Forwarding bit forward_rx_crc=1, RX packets shorter than 9 bytes are dropped

Offset: 0x967

RX Packets that were dropped due to error (upper 32 bits) Fields

Bit Name Description Access Reset
31:0 stats_pcnt16 Statistics word

4 bytes of an 8 byte EHIP Statistics

RO 0x0