Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

The Avalon master interface

i meet two timing diagram about the master interface and i think the frist one is right,but the secend one appeared in a lot of datasheets. is there anyone can suggest me? thank you in advanc...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Both are valid in the Avalon-MM spec: http://www.altera.com/literature/manual/mnl_avalon_spec.pdf

If you are creating your own master component make sure you identify your read (or write) signal as either "read" or "read_n" as a signal type depending on whether you use normal polarity (read) or reverse polarity (read_n). As long as you select the type correctly SOPC Builder will know what to do with that signal when it goes to hook it up to the fabric.