Forum Discussion

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

Cyclone III + EPCS + Remote Update

As the title suggests, we want to implement the remote update feature using the CIII and (Active Serial) EPCS64 device. The objective is to get two application programs stored on the EPCS device, b...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

I am using the ASMI block. I ported the Altera code and added a state machine to interface to my code.

So, I realized I did not have the latest user guide for the Megafunction. I downloaded that and see that Altera now lists the max clock freq for each device. For a Cyclone III it is 40Mhz.

The new UG also includes an update to the READ_SOURCE table which shows a value of "11" as being the input register. That makes sense looking at the block diagram provided in the Cyclone datasheet since READ_SOURCE appears to be a mux select for the readback path.

Also included is an updated table of operations which is helpful too.

RTFM right?

Next up is to move a new image into FLASH and hit the reconfig pin.

Thanks

Kevin.