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Altera_Forum
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20 years ago

Nios II core minimal frequency?

Hi, are there any constrains for system clock. I'm interested in lower freq. than default value 50MHz. When I tried lower freq. (1MHz ! ) JTAG UART terminal was not correct. Is N...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Hi pleskacj,

In reply to your question:

"are there any constrains for system clock. I'm interested in lower freq. than default value 50MHz."

You should get an warning message when you connect the Nios II to a clock that is lower than 20Mhz.

Ans yes, this is due to the Jtag clock constraint.

Hope that answer you question.

SHL