1000BASE-X/SGMII PCS 功能的关键警告消息

编译包含 1000BASE-X/SGMII PCS 的设计时 函数，Quartus® II 软件显示以下警告 消息：

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.

您可以安全地忽略警告消息。

此问题影响所有包含 1000BASE-X/SGMII 的设计 PCS 功能。

无解决方法。此问题将在将来的版本中修复 三速以太网 MegaCore 功能之一。