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Altera_Forum
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14 years ago

ALTLVDS_RX megafunction

Hi, guys: when i build a new project with HDL and megafunction , I use the ALTLVDS_RX for adc data(8 channels and deserialization factor is 1) and it works . Now, I want to generate a system i...
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Altera_Forum
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14 years ago

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You have to create an Avalon-ST streaming 'source' component for the ADC.

You then need to create an Avalon-ST 'sink' to on-chip RAM, or some sort of fast memory device. Because you do not have an infinite amount of RAM, that sink component will need some form of capture enable controller - when enabled it generates addresses to RAM.

If you use dual-ported RAM, then you can access the ADC captured data from the RAM via an Avalon-MM slave on the other port.

Cheers,

Dave

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Hi, [email protected] (http://www.alteraforum.com/forum/member.php?u=21847) :

Thanks !

And what are Avalon-ST 'source' and 'sink' ? How about SG-DMA ?

On my board, a ddr2 is used for Nios ii CPU ,and I allocate some space for adc data . So I want to stream the adc data into ddr2 sdram and then stream out via uart port.

Which Avalon-ST components are all right ?