It is a timing specification that covers the path from the input pin through the combinational logic to the output pin. Pin-to-pin constraints do not cross any registered boundaries.
CPLD CoolRunner -II Family 9K Gates 384 Macro Cells 125MHz 0.18um Technology 1.8V 256-Pin FTBGA
CPLD CoolRunner -II Family 9K Gates 384 Macro Cells 125MHz 0.18um Technology 1.8V 208-Pin PQFP
FPGA Spartan-3 Family 50K Gates 1728 Cells 630MHz 90nm Technology 1.2V 208-Pin PQFP
FPGA Spartan-3 Family 50K Gates 1728 Cells 630MHz 90nm Technology 1.2V 144-Pin TQFP
FPGA Spartan-XL Family 10K Gates 466 Cells 250MHz 3.3V 100-Pin VTQFP
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