Sorry I was typo the MPN.
Correct MPN is PEF2256HV2.2 S LL76.
Is this IC produce by Intel and valid for purchase? Because I found that it is produced by Infineon. The MPN is closer with intel's MPN.
Looking forward for your response.
From the MPN number given, this is not Intel part number.
This is Intel FPGA support forum.
If you have specific FPGA device request, please refer to : https://www.intel.com/content/www/us/en/products/details/fpga.html