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Altera_Forum
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14 years ago

about external pll in lvds_rx and lvds_tx

i am new to lvds mega in quartus . i wanna know that what is the difference between using internal pll and external pll,since there is an option in the lvds_tx, lvds_rx general pannel. which kind co...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

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Is the frame clock you mentioned above the tx_syncclock in altlvds?

i send it.And the LVDS have terminations.

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You should really read the altlvds MegaCore users guide:

http://www.altera.com/literature/ug/ug_altlvds.pdf

and simulate the component in Modelsim. Getting it to work there will show you what the clocks need to be.

Cheers,

Dave