Type: Answers

Type: Errata

Area: Intellectual Property



Critical Warning Messages for 1000BASE-X/SGMII PCS Functions

Description

When you compile designs that contain 1000BASE-X/SGMII PCS function, the Quartus II software displays the following warning messages:

Critical Warning: "mixed_port_feed_through_mode" parameter of RAM atom altera_tse_mac_pcs_pma_gige:altera_tse_mac_pcs_pma_gige_inst|altera_tse_mac_pcs_pma_strx_gx_ena:altera_tse_mac_pcs_pma_strx_gx_ena_inst|altera_tse_top_1000_base_x_strx_gx:top_1000_base_x_strx_gx_inst|altera_tse_top_sgmii_strx_gx:U_SGMII|altera_tse_top_rx_converter:U_RXCV|altera_tse_a_fifo_24:U_DSW|altera_tse_sdpm_altsyncram:U_RAM|altsyncram:altsyncram_component|altsyncram_q2e1:auto_generated|ram_block1a8 cannot have value "old" when different read and write clocks are used. Critical Warning: "mixed_port_feed_through_mode" parameter of RAM atom altera_tse_mac_pcs_pma_gige:altera_tse_mac_pcs_pma_gige_inst|altera_tse_mac_pcs_pma_strx_gx_ena:altera_tse_mac_pcs_pma_strx_gx_ena_inst|altera_tse_top_1000_base_x_strx_gx:top_1000_base_x_strx_gx_inst|altera_tse_top_sgmii_strx_gx:U_SGMII|altera_tse_top_rx_converter:U_RXCV|altera_tse_a_fifo_24:U_DSW|altera_tse_sdpm_altsyncram:U_RAM|altsyncram:altsyncram_component|altsyncram_q2e1:auto_generated|ram_block1a7 cannot have value "old" when different read and write clocks are used.

You may safely ignore the warning messages.

This issue affects all designs that contain 1000BASE-X/SGMII PCS function.

Workaround/Fix

No workaround.This issue will be fixed in a future version of the Triple-Speed Ethernet MegaCore function.