There is a link to fifoed avalon uart:
But on clicking the document, it gets into undefined area.
What is the maximum allowed buad rate ?
Why we can't download document ?
The baud rate for fifoed avalon uart is chosen through the GUI. However you can only choose the values predefined. In the documents below, the version does not provide the option for user define value in the GUI, thus the maximum baud rate is fixed at "921600".
We apologize for the inconvenience, for Fifoed Avalon Uart only document below are available: