Multi-mode circuit in a self-timed integrated circuit

An integrated circuit, comprising:

• a plurality of logic blocks;
• and
• an interconnect structure coupled between the logic blocks,
• wherein each of the logic blocks comprises:
• a logic circuit having at least one input coupled to the interconnect structure, and further having first and second outputs;
• and
• an output circuit programmable to operate in a plurality of modes, the output circuit having first and second inputs respectively coupled to the first and second outputs of the logic circuit, a third input, and at least one output coupled to the interconnect structure,
• wherein the output circuit is coupled to require, in each of the modes, receipt of a token on at least one of the first, second, or third inputs before providing an output token on the at least one output;
• and
• wherein the output circuit is further coupled to require tokens on different ones of the first, second, or third inputs in at least two different ones of the modes before providing the output token on the at least one output.

A circuit, comprising:

• means for programming the circuit to operate in a plurality of modes;
• means for outputting to at least one output, in a first of the modes, an output token in response to receipt of a token on at least one of first, second, or third inputs before providing an output token on at least one output;
• and
• means for outputting to the at least one output, in at least two different ones of the modes, an output token in response to receipt of tokens on different ones of the first, second, or third inputs.