topic Re: Adjust the DDR refresh interval in P-Series https://community.nxp.com/t5/P-Series/Adjust-the-DDR-refresh-interval/m-p/763912#M4435 <HTML><HEAD></HEAD><BODY><P>During normal DDR controller operation it is not required to change its registers values, so the controller behaviour is not specified/guaranteed after a register value is changed when MEM_EN=1.</P></BODY></HTML> Fri, 16 Mar 2018 07:23:35 GMT ufedor 2018-03-16T07:23:35Z Adjust the DDR refresh interval https://community.nxp.com/t5/P-Series/Adjust-the-DDR-refresh-interval/m-p/763911#M4434 <HTML><HEAD></HEAD><BODY><P>Can I adjust the register DDR_SDRAM_INTERVAL of P2020 after the MEM_EN bit of the register DDR_SDRAM_CFG has been setted ?</P><P>If it can't be&nbsp;realized, how can I adjust the&nbsp;refresh interval when the DDR controller is working ?</P></BODY></HTML> Fri, 16 Mar 2018 02:45:01 GMT https://community.nxp.com/t5/P-Series/Adjust-the-DDR-refresh-interval/m-p/763911#M4434 ivanzhang 2018-03-16T02:45:01Z Re: Adjust the DDR refresh interval https://community.nxp.com/t5/P-Series/Adjust-the-DDR-refresh-interval/m-p/763912#M4435 <HTML><HEAD></HEAD><BODY><P>During normal DDR controller operation it is not required to change its registers values, so the controller behaviour is not specified/guaranteed after a register value is changed when MEM_EN=1.</P></BODY></HTML> Fri, 16 Mar 2018 07:23:35 GMT https://community.nxp.com/t5/P-Series/Adjust-the-DDR-refresh-interval/m-p/763912#M4435 ufedor 2018-03-16T07:23:35Z Re: Adjust the DDR refresh interval https://community.nxp.com/t5/P-Series/Adjust-the-DDR-refresh-interval/m-p/763913#M4436 <HTML><HEAD></HEAD><BODY><P>When Tcase of DDR is over 105℃, I need to change the refresh interval, so how to realize?</P></BODY></HTML> Sun, 18 Mar 2018 15:56:46 GMT https://community.nxp.com/t5/P-Series/Adjust-the-DDR-refresh-interval/m-p/763913#M4436 ivanzhang 2018-03-18T15:56:46Z Re: Adjust the DDR refresh interval https://community.nxp.com/t5/P-Series/Adjust-the-DDR-refresh-interval/m-p/763914#M4437 <HTML><HEAD></HEAD><BODY><P>Use higher refresh rate from the very beginning.</P></BODY></HTML> Mon, 19 Mar 2018 02:50:17 GMT https://community.nxp.com/t5/P-Series/Adjust-the-DDR-refresh-interval/m-p/763914#M4437 ufedor 2018-03-19T02:50:17Z