engr_joni_ee
Advanced Member level 3
Hi, I am working on a PCB layout that include MT41K256M16 (SDRAM-256M16-DDR3L) connected to ZYNQ7030. I have some questions.
1- What is data rate on DQ [0:15], for speed grade -187E ? According to page 1 of datasheet, the data rate is 1066 MT/s, is this mega transfer per second ? If yes then can we say because of DDR the digital data byte line DQ [0:15] will actually be signal of 533 MHz, right ?
2- Do I need to match trace length of DQ [0:15] also with ADR [0:12] ?
3- How much mismatch in length is appropriate ? I am having all DQ [0:15] between +/- 200 mil.
1- What is data rate on DQ [0:15], for speed grade -187E ? According to page 1 of datasheet, the data rate is 1066 MT/s, is this mega transfer per second ? If yes then can we say because of DDR the digital data byte line DQ [0:15] will actually be signal of 533 MHz, right ?
2- Do I need to match trace length of DQ [0:15] also with ADR [0:12] ?
3- How much mismatch in length is appropriate ? I am having all DQ [0:15] between +/- 200 mil.