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Altera_Forum's avatar
Altera_Forum
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15 years ago

What is the speed for the soft serde in Stratix IV EP4sGX530

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I am using Stratix IV EP4sGX530( C3 speed) .

My tool is Quatus II 10.0

We know only Row I/Os support hard serde .

so if I create LVDS mpdule in Column I/O , we must check " implement Deserializer circuitry in logic cell" , and create soft serde.

Now question is ,

What is the speed for the soft serde in Stratix IV EP4sGX530?

I wish it at least reach 625M data rate or higher?

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    The data rate is limited by the core clock, the involved DDR registers and the I/O. I would expect at least 800 Mbps. But without the hardware SERDES DPA functionality, you'll possibly have difficulties to get meaningful data from the serial input, considering delay skew.