A logic option that allows the Compiler to create cascade chains automatically by inserting CASCADE buffers into the design. The length of the chains is controlled with the Cascade Chain Length option.

This option is ignored if it is assigned to anything other than a design entity. The Auto Cascade Chains option is also ignored if you select Product Term or ROM as the setting for the Technology Mapper option. This option is available for ACEX^® 1K, APEX^™ 20K, APEX 20KC, APEX 20KE, APEX^™ II, ARM^®-based Excalibur^™, FLEX 10KE, and FLEX^® 6000 devices.