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Altera_Forum's avatar
Altera_Forum
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10 years ago

DDR3 min/max/middle allowed frequencies

Hello, As for the DDR3 clock frequency, it's currently set to 533Mhz (max allowed freq). I know that the minimal supported frequency is 300MHz. So, can I set any frequency between 300MHz and 5...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

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So, can I set any frequency between 300MHz and 530Mhz?

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Providing your chosen DDR3 memory devices supports your selection, yes.

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Why does the minimum frequency requirement exist at all?

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The DDR3 memory's DLL will have a minimum operating frequency, below which it won't lock.

Cheers,

Alex