Forum Discussion

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

communication between Cyclone III and MAX II in Cyclone III development kit

Hello, We are working on Cyclone III 120 dev. kit. I could not figure it out from the reference manual about communication facility between MAXII and Cyclone III devices. my task is to im...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

You should check the Dev Kit circuit diagrams more thoroughly. I see not less than 13 signals connecting MAX II and FPGA, that can be freely assigned, if you replace the MAX II configuration:

USB_FD[7..0]

USB_FULL

USB_EMPTY

USB_REN

USB_WEN

USB_CMD_DATA

Also these signals are optionally free for your assignment

MAX_OEN

MAX_WEN

MAX_CSN

It should be checked however, if these signals are possibly wired in the MAXII default configuration, although Altera support doesn't know about.