Due to a problem in the Quartus® Prime software, the following TX statistics registers will read back as '0': CNTR_TX_FRAGMENTS_LO, CNTR_TX_JABBER_LO, CNTR_TX_CRCERR_LO, CNTR_TX_FRAGMENTS_HI, CNTR_TX_JABBER_HI, CNTR_TX_CRCERR_HI
Area: Intellectual Property
Last Modified: June 19, 2017
Version Found: v16.1
Bug ID: FB: 459730;
IP: Low Latency 40G 100G Ethernet, Low Latency 40G Ethernet, Low Latency 100G Ethernet
This problem is not scheduled to be fixed. To work around this issue, the user should create his own counters for these statistics.