Cascade Chain Length logic option

A logic option that specifies the maximum allowable length of a chain of both user-entered and Compiler-synthesized CASCADE buffers. Cascade chains that exceed this length are broken into separate chains.

This option is ignored if it is assigned to anything other than a design entity. This option is available for ACEX^® 1K, APEX^™ 20K, APEX 20KC, APEX 20KE, APEX^™ II, ARM^®-based Excalibur^™, FLEX 10KE, and FLEX^® 6000 devices.