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Altera_Forum
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15 years ago

MegaWizard SRAM using too many M9K blocks

Hi there, I have a design that requires quite a lot of dual-port RAM to perform some signal acquisition and processing. One basic block (hist_ram_16) that I need is a RAM with 18 bits o...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Brilliant, it was indeed the "maximum block depth" setting. I think this field on that dialog is quite confusing (so it looks like a bug indeed...).

I checked on the manual, and it has indeed an impact on the block utilization as well as on the dynamic power.

Actually, it turns out that by setting it to 512 I can not only limit the number of M9K but can also save power!

For those who are interested, I have attached a screenshot of the manual page here below.

Thanks, nice work!