2.6.4 Buffer Module

An additional resource inside each SuperCluster is the Buffer (B) module (see Figure 1-4). When a fanout constraint is applied to a design, the synthesis tool inserts buffers as needed. The buffer module has been added to the AX architecture to avoid logic duplication resulting from the hard fanout constraints. The router utilizes this logic resource to save area and reduce loading and delays on medium to high fanout nets.