Integrated circuit with cascading dsp slices

Abstract From the Canadian patent

Described is an integrated circuit (IC) with columns of DSP slices that can be cascaded to create DSP circuits of varying size and complexity. Each DSP slice includes a plurality of operand input ports and a slice output port all of , which are programmably connected to general routing and logic resources. The operand ports receive operands for processing and a slice output port conveys , processed results. Each slice additionally includes a feedback port connected to the respective slice output port, to support accumulate functions in this embodiment, and a cascade input port connected to the output port of an upstream slice to support cascading.