MAX10 claming diode forward voltage

Thanks for your reply. I've read the

• "Intel® MAX® 10 General Purpose I/O User Guide ",
• "MAX10 Datasheet",
• "AN 447: Interfacing Intel® FPGA Devices with 3.3/3.0/2.5 V LVTTL/LVCMOS I/O Systems" ,
• "Intel® MAX® 10 FPGA Signal Integrity Design Guidelines"

documents, but none of them answers my question about max. forward voltage of internal clamping diode.

Is there any alternative way to determine the requested value (spice, IBIS model)?

Thanks in advance.