Forum Discussion
Altera_Forum
Honored Contributor
15 years agotiming constraints for EHPI DSP to FPGA asynchronous interface
Hi, I am trying to write timing constraints for connecting a TI DSP, TMS320VC5510A, to a Cyclone IV FPGA. The bus used is EHPI in Multiplexed mode. It looks confusing because the interface is asynchr...
Altera_Forum
Honored Contributor
15 years agoHi Rysc,
It was buried.....when i did a node search and changed the constraint to this: # Create Generated Clock for STROBE from PLL driving REG create_generated_clock -name HAD_STROBE_REG -source EHPI_PLL_inst|altpll_component|auto_generated|pll1|clk[0] [get_registers {bidir_interface:uut|hds_ni}] ....it now works....and i beleive i now have some working (at least syntactically !) constaints. If i run the report IO timing i get lots of failling paths ...well at least thats better than none before ...so progress ..:) Many many thanks for your help !