Forum Discussion

Honored Contributor

10 years ago

cycloneIV GX use 3.0Gbps data rate.error:reserved_gnd_ac5 is too close to lvds IO

hi device is EP4CGX110DF23. refclk is connect REFCLK[0] of pin T9.altgx data rate is set to 3000Mbps. Set pin AC5,AD4,AB5,etc to connect GND. quaturs report a error:non-differential I/O pin '...

Altera_Forum

Honored Contributor

10 years ago

Hi, this error message is because you are placing the non-differential io standard too close the differential io standard.

you can refer to the following link as reference

https://www.altera.com/support/support-resources/knowledge-base/solutions/rd05052003_3407.html

Forum Discussion

cycloneIV GX use 3.0Gbps data rate.error:reserved_gnd_ac5 is too close to lvds IO

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