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Altera_Forum's avatar
Altera_Forum
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15 years ago

Cyclone3C10 output LVDS

Hi,

Is is possible for the Cyclone3 to drive out true LVDS with a clock at 240MHz drive data at both the rising and falling edges of that clock, DDR like?

I see in the data sheet that it can do true LVDS on the left and right sides w/o the need of the external resistor networks, but trying to get an idea of speed.

Regards,

Rob

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    It's all in the Cyclone III device handbook. The maximum I/O clock rate for true LVDS output is between 320 and 420 MHz, depending on the device speed grade.