| 摘要 |
A programmable logic block provides fast interconnect paths between carry multiplexer output terminals and the input terminals of function generators (e.g., lookup tables) in the same logic block. An integrated circuit includes an interconnect structure, a function generator, and a carry multiplexer having a select terminal programmably coupled to an output terminal of the function generator. An output signal from the carry multiplexer can traverse the interconnect structure to reach the input terminals of the function generator. However, a "fast connect" path is also provided that interconnects the carry multiplexer output with an input terminal of the function generator, without traversing the interconnect structure. In some embodiments, fast connect paths are also provided to input terminals of other function generators in the same logic block.
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