Test-Pattern Generator IP from Altera University Program (UP) Video IP cores issues.

Like in [1] declared, you need to set ready to one, to start the data transfer, or to stop it.

So I advice you to red [1].

Because of, that I think that the TPG is similar to the one of the Video Image Processing (VIP) Suite, I also post the link of the VIP-Spec in [2].

In [2] there is also a section about the Avalon-ST datatransfer. So my advice is to read this first and if you need a deeper detail, read [1]...

[1] http://www.altera.com/literature/manual/mnl_avalon_spec.pdf

[2] http://www.altera.com/literature/ug/ug_vip.pdf