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Altera_Forum's avatar
Altera_Forum
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15 years ago

dataavailable signal on Avalon MM

I have a MM slave that has to read an external device, and due to the latency in the read process to this device, I would like to have my Nios initiate the process by a write to a register and then r...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Like std_logic_vector said this is what the 'readdatavalid' signal is for. It allows the master to post multiple read requests in order to hide the latency. Alternatively if you have bulk data to move from this high latency interface you could use a DMA instead.