Bits[6:2]: Code Group Reception Indicators - 16.2 English

1G/2.5G Ethernet PCS/PMA or SGMII LogiCORE IP Product Guide (PG047)

Document ID
PG047
Release Date
2023-11-01
Version
16.2 English

These signals indicate the reception of particular types of groups, as defined in Table 3. The following figure shows the timing of these signals, showing that they are aligned with the code groups themselves, as they appear on the output gmii_rxd[7:0] port.

Figure 1. status_vector[4:2] Timing

The above figure shows an error occurring in the second clock cycle of an /I/ idle sequence. RXDISPERR shows this as a running disparity error occurring in the second clock cycle of an /I/ idle sequence. RXNOTINTABLE means that the core has received a code group that is not recognized from the 8B/10B coding tables. If this error is detected, the timing of the RXNOTINTABLE signal is identical to that of the RXDISPERR signal shown in the previous figure.