MCIMX6Q6AVT10AC with DDR3 PCB layout

[xiufengxing]

i use MCIMX6Q6AVT10AC to PCB layout , i found the DDR Address length is not equal in SABRESDB_DESIGNFILES/LAY-27392_C.brd ,it's about 400mil diffrence with each other ,is that OK?

[igorpadykov]

Hi xiufeng

please follow layout guidelines given in sect.3.5 DDR routing rules

i.MX6 System Development User’s Guide

http://cache.freescale.com/files/32bit/doc/user_guide/IMX6DQ6SDLHDG.pdf

Best regards
igor
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[xiufengxing]

Hi,igor,i'm very appreciated you answer my question,i have read the user's guid,and there is  Match the signals ± 25 mils of DRAM[15:0] ; but i'm confused,why 400mil diffrence in NXP demo board SABRESDB_DESIGNFILES/LAY-27392_C.brd ?

[igorpadykov]

Hi xiufeng

demo board was designed before this documentation was validated.

General layout rules are given in i.MX6 System Development User’s Guide and one

can follow it.

Best regards
igor