error ngdBuild 809

[abhinipun]

Hello all,

I am getting this error 

ERROR:NgdBuild:809 - output pad net 'data_p<9>' has an illegal load:
ERROR:NgdBuild:809 - output pad net 'data_n<9>' has an illegal load:

can anyone please tell me the way out of this error.

I am using OBUFDS buffer.

Thanks in advance 

Nipun Sharma.

[syedz]

@abhinipun,

Check this link: 

https://forums.xilinx.com/t5/General-Technical-Discussion/regarding-error-NgdBuild-809-output-pad-net-flash-rb-sig-has-an/td-p/506901

--Syed

[abhinipun]

hi @syedz,

thank you for replying first of all.

I tried everything in that document but it didn't solve my problem.

Can you please suggest anything else??

thanks again 

[graces]

What is your netlist like? Are these two nets connected to an OBUFDS and directly to the top level port?

[syedz]

@abhinipun,

Can you provide any update on this thread? Let us know if the issue still exists. 

--Syed

[abhinipun]

yes these are directly connected to the top level port

[syedz]

@abhinipun,

Can you share the ISE project to debug the issue? 

--Syed

[abhinipun]

@syedz ok
please tell me your email I.D.

[syedz · Accepted solution]

@abhinipun

Sent you a private message. Please check and respond back.

--Syed