cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 
rkfournier
Adventurer
Adventurer
731 Views
Registered: ‎05-09-2018

Floating LVDS_25 Inputs on Artix-7

Jump to solution

I have a couple questions on the LVDS_25 inputs on an Artix-7 device:

1). Our system design may depopulate some of the devices that are driving LVDS_25 inputs. This will leave the inputs powered and enabled with an internal termination, but with nothing driving these inputs. Will this cause any damage to the device? If yes, what should we do to protect against this situation?

2) In another part of the same system, the FPGA design uses the IBUFDS_IBUFDISABLE primitive and disables the input buffer when it detects that the driver is not present. Is this acceptable or can this also damage the device?

0 Kudos
1 Solution

Accepted Solutions
rkfournier
Adventurer
Adventurer
648 Views
Registered: ‎05-09-2018

L.E.O. Thank you for your reply.

I also consulted with my local FAE and he found the following answer record:

https://www.xilinx.com/support/answers/11510.html

 

View solution in original post

0 Kudos
2 Replies
lowearthorbit
Scholar
Scholar
720 Views
Registered: ‎09-17-2018

Damage is the result of exceeding the abs max specifications,

Nothing you have described does that.

l.e.o.

 

0 Kudos
rkfournier
Adventurer
Adventurer
649 Views
Registered: ‎05-09-2018

L.E.O. Thank you for your reply.

I also consulted with my local FAE and he found the following answer record:

https://www.xilinx.com/support/answers/11510.html

 

View solution in original post

0 Kudos