AM35xx ddr_padref pin with LPDDR

Ayumi Namiki

Hi,

How to treat the ddr_padref pin of AM35xx with LPDDR? There is no information in the datasheet, TRM and wiki page. NC is OK or need to pull-down with 50ohm / 1% precision resistors as using DDR2?

Regards,

Ayumi

over 14 years ago

0 peaves over 14 years ago

TI__Guru 62945 points

The AM35xx data sheet (TI document SPRS550) tells you to connect this pin to ground through a 50 ohm, 2% resistor.

Please refer to the External Memory Inerfaces - SDRC Signals Description Table in the AM35xx data sheet .

Regards,

Paul

0 Ayumi Namiki over 14 years ago in reply to peaves

TI__Intellectual 2690 points

Hi Paul,

Thank you for your comment. I figure out that no gap of this pin treatment between w/DDR2 and w/LPDDR.

Regards,

Ayumi

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AM35xx ddr_padref pin with LPDDR