Digital Signal Processing Circuitry with Multiple Precisions and Dataflows

Integrated circuit devices, methods, and circuitry for a digital signal processing (DSP) block that can selectively perform higher-precision DSP multiplication operations or lower-precision AI tensor multiplication operations. Flexible digital signal processing circuitry may include hardened multipliers, hardened summation circuitry, and an intermediate multiplexer network. The intermediate multiplexer network may be configurable to, in a first configuration, route data between the plurality of hardened multipliers and the hardened summation circuitry to perform a plurality of lower-precision multiplication operations. In a second configuration, the intermediate multiplexer network may route the data between the plurality of hardened multipliers and the hardened summation circuitry to perform at least one higher-precision multiplication operation.