Set timing delay in lattice diamond for MACHXO2

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Hi,
I would like to know how to set delay in lattice diamond for internal pins as well as for I/O?

I put this inside .sdc file but it is not recognized what other tool like vivado recognize?

set_max_delay -from [get_pins {I_module_a/txdata_reg[8]}] -to [get_pins {I_module_b/ODDRXE_msb}] 2.49

Regards
 

What do you mean “internal pins”? Do you mean module ports? Why do you even need to do that? If you have a clock constraint the tool should take care of meeting timing. Do you maybe need a MULTICYCLE constraint? Also, maybe the signal you’re trying to constrain is getting optimized away.
 

Hi,

How long do you whish the delay to be?

Klaus
 

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