The changes in the DDR3 Enable Read DQS Tracking option are due to the enhancement of the DDR3 IP functionality and for ease of use. Starting with the Quartus® II software version 11.1 SP2 , the Enable Read DQS Tracking option has been removed from the UniPHY DDR3 megawizard. This option is now selected automatically when required and is determined by the FPGA device type, memory interface protocol and memory clock frequency. It is strongly recommended that users upgrade to the latest version of the Quartus II software. However, for reference here is a summary of the Enable Read DQS Tracking parameter in earlier Quartus II software releases. 11.0SP1 : Enable Read DQS Tracking first appeared in the UniPHY DDR3 IP megawizard in the PHY Settings -> Advanced PHY Settings parameters. 11.1 : Enable Read DQS Tracking functionality was disabled due to a bug and is shown as greyed out in the megawizard. If your DDR3 IP has "Enable Read DQS Tracking" option selected and is greyed out, a fitter error will occur. To turn off Enable Read DQS Tracking, modify the UniPHY DDR3 IP top level file as shown below and regenerate the IP : Find the line // Retrieval info: <generic name="DQS_TRK_ENABLED" value="true" /> and change to // Retrieval info: <generic name="DQS_TRK_ENABLED" value="false" /> 11.1SP1 : Enable Read DQS Tracking functionality was re-enabled and is a parameter in the UniPHY DDR3 IP Why has the option "Enable read DQS tracking" in UniPHY based DDR3 SDRAM IP changed between Quartus II software releases?
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DDR3 啟用讀取 DQS 追蹤選項的變更是由於 DDR3 IP 功能的增強以及便於使用。
從 Quartus® II 軟體版本 11.1 SP2 開始,「啟用讀取 DQS 追蹤」選項已從 UniPHY DDR3 megawirizd 中移除。此選項現在會在必要時自動選取,並且由FPGA裝置類型、記憶體介面協定和記憶體頻率頻率決定。
強烈建議使用者升級至最新版本的 Quartus II 軟體。然而,如需參考,請參閱先前 Quartus II 軟體版本中啟用讀取 DQS 追蹤參數的摘要。
11.0SP1 :啟用讀取 DQS 追蹤首次出現在 PHY 設定中的 UniPHY DDR3 IP megawi生->進階實體層設定參數。
11.1 :啟用「啟用讀取 DQS 追蹤」功能因錯誤而停用,且顯示為在 megawi呈灰色。如果您的 DDR3 IP 有選取的「啟用讀取 DQS 追蹤」選項,並且變灰,就會發生更合適的錯誤。
若要關閉 啟用「啟用讀取 DQS 追蹤」,請修改下列所示的 UniPHY DDR3 IP 頂層檔案,並再生 IP:
尋找行
播取資訊:
並變更為
播取資訊:
11.1SP1 :重新啟用「啟用讀取 DQS 追蹤」功能,並且是 UniPHY DDR3 IP 的參數