US patent US12732191
High-speed multi-mode logic block with combined outputs for programmable logic devices
Abstract
Embodiments of the present disclosure include improved logic blocks with combined outputs for programmable logic devices and methods of operating and programming these logic blocks. In an exemplary aspect, a programmable logic device (PLD) is described. In some embodiments, the PLD includes a logic block. The logic block may include a first look-up table (LUT) circuit configured to generate a first output; a second LUT circuit configured to generate a second output; a ripple logic circuit configured to receive the first output and the second output and generate a third output; and a three-to-one multiplexer circuit configured to receive the first output, the second output, and the third output and selectively produce an output of the logic block.