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Altera_Forum's avatar
Altera_Forum
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11 years ago

m9k are not found in Arria V device

I see that in ALTERA device, Some device has M9K blocks and some have M10K blocks, but not both. Can I Know the reason?

and why exactly M9K in Arria V, and why not M10K instead of M9K.

3 Replies

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

    Why 10 bits wide?

    I guess a lot of memory is used to generate 32bit wide blocks - so the extra bits are wasted.

    9 bits could be used for 8+parity.

    10 bits doesn't seem to help much with ECC.

    There must be a 'killer-ap' out there that needs it :-)
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    11 years ago

    9 bits was always sold as 8 bits + parity. But Ive only ever used it for storage.

    Extra bits are always helpful for sideband status bits through a fifo.

    I just think more bits = more storage = more opportunity.