Use DDR3L for C6678

g.f.

Hi,

I have a question about C6678 DDR3 I/F.

Our customer are planning to use 1.35V DDR3(DDR3L) for C6678.
I understand that C6678 DDR3 I/F power supply spec is 1.5V,
so that they can't connect DDR3L if 1.35V is provided for DDR3 I/O.

But DDR3L(1.35V) is back compatible to 1.5V operation,
so is it allowed to connect DDR3L memory to C6678 if 1.5V is provided for DDR3 I/O?

And is there any experience which use DDR3L for C6678 ?

best regards,
g.f.

over 11 years ago

0 HRi over 11 years ago

Guru 10750 points

Hi g.f.

Please check -

http://e2e.ti.com/support/dsp/c6000_multi-core_dsps/f/639/t/300938.aspx

http://e2e.ti.com/support/dsp/c6000_multi-core_dsps/f/639/p/287616/1057220.aspx#1057220

Thanks,

0 g.f. over 11 years ago in reply to HRi

Guru 15520 points

Hi HR,

Thank you for the reply.

I already saw the post which you send(first URL),
but I found the following post:
http://e2e.ti.com/support/dsp/c6000_multi-core_dsps/f/639/p/141104/509529.aspx#509529

I was little confused because the post is written as that C6678 does not support 1.35V(DDR3L).

So, if providing 1.5V, we can use DDR3L, right?

best regards,
g.f.

0 HRi over 11 years ago in reply to g.f.

Guru 10750 points

Hi g.f.

Yes, you are correct,

Thanks,

0 g.f. over 11 years ago in reply to HRi

Guru 15520 points

Hi HR,

Thank you so much!

best regards,
g.f.

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Use DDR3L for C6678