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

ID 683430
Date 4/09/2024
Document Table of Contents

B.7.68. Configure RX Statistics Counters

Configure RX Statistics Counters

Configuration bits to control the behavior of the RX Statistics counters

Offset: 0x945

Configure RX Statistics Counters Fields

Bit Name Description Access Reset
2 rx_shadow_req RX Shadow Request
1: Freeze stats CSRs so that all RX Stats values read from the registers will be from the same moment.
  • Note that the actual stats collection counters are not frozen, but because they are all 'read' at the time of the freeze, they are cleared
  • If a shadow request is started while snapshot is active, a new capture will be executed
  • Likewise, if a shadow request is active while snapshot is asserted, a new capture will be executed
  • While either a shadow request or a capture is active, rx_shadow_on will be high
  • Snapshot and shadow requests apply to several of the RX PCS counters as well as MAC statistics
RW 0x0
1 rst_rx_parity Reset the RX Statistics Parity Error bit
1:Reset the parity error bit in RX Statistics Counter Status
  • Parity error bit will remain in reset until rst_rx_parity is set back to 0
RW 0x0
0 rst_rx_stats Reset RX Statistics
1: Reset all RX Stats counters
  • RX stats will stay in reset until reset is set back to 0
  • Reset also applies when snapshot or shadow is active, and will clear the AVMM visible registers
  • rst_rx_stats does not clear the parity error bit
RW 0x0