topic Re: ZQ cablibration error in P-Series https://community.nxp.com/t5/P-Series/ZQ-cablibration-error/m-p/361048#M1822 <HTML><HEAD></HEAD><BODY><P>DDR_ERR_DETECT[24] means Automatic Calibration Error (ACE), I am not sure why you called it "ZQ calibration Error".</P><P></P><P>ACE bit can be set if</P><P>1) Automatic CPO calibration was enabled by setting TIMING_CFG_2[CPO] to 11111 and an error was reported.</P><P>2) Incorrect termination of MDICx signals.</P><P>3) Write leveling calibration was not able to complete. This relates to improper settings of the DDR_WRLVL_CNTL register or board-level issues.</P></BODY></HTML> Thu, 30 Oct 2014 07:09:55 GMT Bulat 2014-10-30T07:09:55Z ZQ cablibration error https://community.nxp.com/t5/P-Series/ZQ-cablibration-error/m-p/361047#M1821 <HTML><HEAD></HEAD><BODY><P>I used a P1011NEX in my design,and I found a ZQ calibration Error(DDR_ERR_DETECT[24]) when initializing DDR3,Which problems would trigger this error?</P></BODY></HTML> Wed, 29 Oct 2014 09:06:35 GMT https://community.nxp.com/t5/P-Series/ZQ-cablibration-error/m-p/361047#M1821 rayxie 2014-10-29T09:06:35Z Re: ZQ cablibration error https://community.nxp.com/t5/P-Series/ZQ-cablibration-error/m-p/361048#M1822 <HTML><HEAD></HEAD><BODY><P>DDR_ERR_DETECT[24] means Automatic Calibration Error (ACE), I am not sure why you called it "ZQ calibration Error".</P><P></P><P>ACE bit can be set if</P><P>1) Automatic CPO calibration was enabled by setting TIMING_CFG_2[CPO] to 11111 and an error was reported.</P><P>2) Incorrect termination of MDICx signals.</P><P>3) Write leveling calibration was not able to complete. This relates to improper settings of the DDR_WRLVL_CNTL register or board-level issues.</P></BODY></HTML> Thu, 30 Oct 2014 07:09:55 GMT https://community.nxp.com/t5/P-Series/ZQ-cablibration-error/m-p/361048#M1822 Bulat 2014-10-30T07:09:55Z