DDR3 hardware circuit design

[samym]

Hi Friends,

currently i am designing an 64 bit DDR3 with fly by topology. for address and command i have 47ohm far end termination. do we need any termination for clock pairs. also if you have any specific hardware guidelines please let me know other than layout guidelines.

Thanks

 

[Dominik Przyborowski]

JEDEC standard JESD-79C contains all information which you need.

 

[marce]

Micron have data for layout.

 

[samym]

Micron have data for layout.

i checked some of the datasheets but i didn't get the clear information. If you have any link can you please send.

 

[malli_1729]

See any design guides for DDR3 design mainly from MICRON or from your controller manufacturer.

TN-41-08: Design Guide for Two DDR3-1066 UDIMM Systems
TN-41-13: DDR3 Point-to-Point Design Support
https://www.nxp.com/files-static/32bit/doc/app_note/AN3940.pdf