MPC5xxx中的主题 MPC5200 SDRAM timing clarification https://community.nxp.com/t5/MPC5xxx/MPC5200-SDRAM-timing-clarification/m-p/380084#M486 <HTML><HEAD></HEAD><BODY><P>On the MPC5200 SDRAM timing, standard SDRAM, read timing, the data setup is specified as a max of 0.3ns.&nbsp; Normalli I see setup time specified as minimums.&nbsp; Is this an error, or is there any clarification of why this is specified in this way?&nbsp; Also, since the user manual says that the read data is sampled with a n internally generated, 1/4 cycle delayed clock, does that impact the timing specs in the datasheet which only reference MEMCLK?</P></BODY></HTML> Mon, 06 Apr 2015 15:27:24 GMT patrickgillespi 2015-04-06T15:27:24Z MPC5200 SDRAM timing clarification https://community.nxp.com/t5/MPC5xxx/MPC5200-SDRAM-timing-clarification/m-p/380084#M486 <HTML><HEAD></HEAD><BODY><P>On the MPC5200 SDRAM timing, standard SDRAM, read timing, the data setup is specified as a max of 0.3ns.&nbsp; Normalli I see setup time specified as minimums.&nbsp; Is this an error, or is there any clarification of why this is specified in this way?&nbsp; Also, since the user manual says that the read data is sampled with a n internally generated, 1/4 cycle delayed clock, does that impact the timing specs in the datasheet which only reference MEMCLK?</P></BODY></HTML> Mon, 06 Apr 2015 15:27:24 GMT https://community.nxp.com/t5/MPC5xxx/MPC5200-SDRAM-timing-clarification/m-p/380084#M486 patrickgillespi 2015-04-06T15:27:24Z