Forum Discussion
Altera_Forum
Honored Contributor
11 years agoWhat 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
Honored Contributor
11 years ago --- Quote Start --- 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. --- Quote End --- If this is an informational parameter, that make sense. This can tell other designers what the expected input clock frequency for this qsys sub system. Thanks very much.