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Valued Contributor III
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BLVDS termination for MAX 10

I am using a MAX 10 to drive another chip using LVDS. I am using the true LVDS driver. I would like tobe able to Tri-State the LVDS driver when the power to the chip that I am driving is not enabled. If I use BLVDS, will I need to use any external resistors?

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Valued Contributor III
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Refer to AN-522 - "Implementing Bus LVDS Interface in Supported Altera Device Families". 

 

Yes - this suggests the use of series termination resistors as well as termination resistors for each end of the bus. 

 

For MAX 10 use the "GPIO Lite IP" core. 

 

Cheers, 

Alex
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Valued Contributor III
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Sorry - I meant to give you the link... 

 

https://www.altera.com/content/dam/altera-www/global/en_us/pdfs/literature/an/an522.pdf 

 

Cheers, 

Alex
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Valued Contributor III
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In a first step I would check if the LVDS receiver has any problems with LVDS input being driven while the device is unpowered.  

 

Any LVDS receiver or complex chip with LVDS inputs that I know won't. You might be solving a non-existing problem.
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