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Altera_Forum's avatar
Altera_Forum
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8 years ago

connecting Nios ii system and other system over ram-controller with different clocks?

hello, i plan a new project and i found a problem right at the beginning. the plan is to connect an external computer over the gpio as adress- and databus to an fpga-board and use the board t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

You could create a shared memory: instantiate a dual port ram with port 1 connected to Nios data bus, while port 2 is exposed to the external system which must drive the data/address/control lines according to the avalon specifications.

Then you should provide some sort of software handshaking for data transfer.