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Altera_Forum
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13 years ago

Can ALTDDIO_In use LVDS inputs in Cyclone III

I would like to interface a TI ADC08D1520 to a Cyclone III. It has dual data rate, diff pair outputs, that are electrically compatible with LVDS. At max speed, the data clock (also an LVDS...
Altera_Forum's avatar
Altera_Forum
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13 years ago

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Should I use the ALTDDIO megafunction to input this data, or, would the following sample VHDL be sufficient:

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Try to use the IP cores where you can, at least to start with.

You should be able to use either the ALTDDIO or ALTLVDS_RX components.

I suspect if you configure the ALTLVDS_RX component for demux-by-4 or demux-by-8, it will use DDR registers in the I/O cells, and then implement the deserializer in the fabric.

Cheers,

Dave