UPGRADE YOUR BROWSER

We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

cancel
Showing results for 
Search instead for 
Did you mean: 
Newbie rehanbunny
Newbie
9,041 Views
Registered: ‎01-29-2014

Virtex 4 FPGA GPIO I/O Issue (No Output)

Hello,

i have designed a board using VIRTEX4 (XC4VSX35-11FF668). Impact detects FPGA & PROM, i can program my FPGA.

Using Chipscope pro i can see the toggelled output signal. 

Problem is regarding the GPIO output, i can't see any output of the signals at GPIO's. i m using pin A23,B23,A24, B24.

but no output at the GPIO.

 

Plz provide some help.

THANKS

0 Kudos
4 Replies
Xilinx Employee
Xilinx Employee
9,036 Views
Registered: ‎07-11-2011

Re: Virtex 4 FPGA GPIO I/O Issue (No Output)

Hi,

 

What does your deisgn do ?

Outputs on GPIO depends on any inputs or you have driven them with constant pulses/logic?

 

 

 

---------------------------------------------------------------------------------------------
Please do google search before posting, you may find relavant information.
Mark the post - "Accept as solution" and give kudos if information provided is helpful and reply oriented
0 Kudos
Historian
Historian
9,024 Views
Registered: ‎02-25-2008

Re: Virtex 4 FPGA GPIO I/O Issue (No Output)


@rehanbunny wrote:

Hello,

i have designed a board using VIRTEX4 (XC4VSX35-11FF668). Impact detects FPGA & PROM, i can program my FPGA.

Using Chipscope pro i can see the toggelled output signal. 

Problem is regarding the GPIO output, i can't see any output of the signals at GPIO's. i m using pin A23,B23,A24, B24.

but no output at the GPIO.


What's a GPIO?

----------------------------Yes, I do this for a living.
0 Kudos
Newbie rehanbunny
Newbie
9,015 Views
Registered: ‎01-29-2014

Re: Virtex 4 FPGA GPIO I/O Issue (No Output)

Constantly driven, i mean

 

IO1 = 1'b0;

IO2 = 1'b1;

IO3 = ~ IO3;

 

 

0 Kudos
Mentor hgleamon1
Mentor
9,011 Views
Registered: ‎11-14-2011

Re: Virtex 4 FPGA GPIO I/O Issue (No Output)

You're going to have to be a lot more informative than that if you want to get some useful help.

You state that you have designed a board (really? The whole board?) so it's a given that nobody here has any knowledge of it and its functions.

What is your FPGA design supposed to do? Can you post some code related to the failing part of the design?

Have you simulated your design?
----------
"That which we must learn to do, we learn by doing." - Aristotle
0 Kudos