Circuit arrangement for a safety i&c system

A circuit arrangement disposed on a logic board, the circuit arrangement comprising:

• an FPGA including a plurality of logic function units each having inputs and outputs, a set of internal routing resources for interconnections between said inputs and outputs of said logic function units, and a plurality of pins;
• at least one application specific PLD having a plurality of pins;
• and
• circuit tracks disposed on the logic board and providing a plurality of point-to-point connections between said pins of said FGPA and said pins of said PLD;
• said internal routing resources of said FPGA not interconnecting said inputs and outputs of said logic functions units;
• and
• said at least one PLD operating as an application-specific, FPGA-external switch-matrix for said point-to-point connections and for said inputs and outputs of said logic function units.