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Altera_Forum
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13 years ago

can SGDMA be controlled by FPGA logic?

Dear all, Can SGDMA be controlled by FPGA logic without any C program from Nios II if we only use it to transfer data between on-chip memory and off-chip memory (DDR2 SDRAM)? If so, how...
Altera_Forum's avatar
Altera_Forum
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13 years ago

You can.

NIOS does not have a special role, it's just yet another Avalon-MM master.

You can use whatever you want to control SGDMA. All you need is to make your logic an Avalon-MM master which writes the proper values into the SGDMA configuration registers.

So, basically, we're talking about a some kind of state machine.

That said, slapping in NIOS II/e core and a small C program should be simpler.