Target platform 'DLXCKU5PE' is not supported for quantization.

Hi,
DLXCKU5PE is my self-generated deep learning bitstream with the datatype of int8. When I want to validate the quantized deep learning network on my FPGA platform.
An error occurred.
I wonder how to solve this problem. Or only offical evaluation boards support this function.

 Accepted Answer

Hi,
This error usually arises in Deep Learning HDL Toolbox when:
  • The target FPGA platform you selected (DLXCKU5PE) is not officially supported by the quantization workflow in MATLAB/HDL Coder/Deep Learning HDL Toolbox.
  • The platform is either custom or not included in the list of supported boards for quantized deployment.
Try to follow below steps which might helpful for you:
1. Check Supported Platforms
2. Custom Board Registration
  • For custom boards, you may need to create a custom platform registration using the dlhdl.Target and dlhdl.Board classes, but quantization support may still be limited.
3. Try Float Deployment
  • If quantized (int8) deployment is not supported, you may be able to deploy your network using single (floating point) precision instead.
I hope this helps!

1 Comment

Thanks,
I am glad to receive your reply.
I have solved this problem by following the guide at
The Matlab can work with my platform.
However, the accuracy drops by roughly 4%. I’m currently looking into ways to recover this loss.

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Asked:

KH
on 26 Sep 2025

Commented:

KH
on 6 Nov 2025

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