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Altera_Forum
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11 years ago

What is the function of clock frequency of clock source in Qsys?

When we make a design in qsys, at beginning there is always a clock source module. I try to check the document of this IP but it seems there is no document available. It looks like this module is jus...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

The clock frequency may or may not be used by modules that are connected to that clock.

For example, an SPI controller that is supposed to operate from a 1MHz serial clock would implement a 25x divider if it knew that it was connected to a 25MHz clock. Similar for a UART, etc.

It is an informational parameter, which may or may not have importance in your system.