1.2 Foldback Logic

Each ATF15XX/ATF1500 MC contains foldback logic nodes. These nodes enable the implementation of complex functions that require additional logic. All foldback logic nodes are connected to the foldback bus. The ATF15XX/ATF1500 devices contain multiple foldback buses, each allocated to a group of 16 MCs. The foldback logic nodes for the first group (MC1 through MC16) are connected to one foldback bus, while the nodes for the second group (MC17 through MC32) are connected to the other foldback bus.