Digital crossbar switch

A digital crossbar switch, for transferring data between an internal data bus and one or more input/output data buses, comprising:

• an internal data bus;
• a plurality of multiplexer logic units each coupled to said internal data bus;
• a plurality of input/output data buses, one being coupled to each of said multiplexer logic units, wherein number of bits in each of said input/output data buses is "n" and the total number of bits in all of said input/output data buses equals "m", the number of bits in said internal data bus;
• a control input/output unit coupled to each of said multiplexer logic units for controlling the transfer of configuration control bits into and out of said multiplexer logic units;
• a logic controller coupled to each of said multiplexer logic units for transmitting logic control signals into said multiplexer logic units;
• a data input controller coupled to a corresponding data bus an in response to selected control signals to pass input data to said internal data bus;
• a data output controller in each of said multiplexer logic units coupled to said internal data bus for selectively transmitting n bits of data from said internal data bus to an input/output data bus of an associated multiplexer logic unit in accordance with a selected control word;
• and
• control word memory coupled to said data output controller for storing switching configuration instructions and applying a selected control word in accordance with a selected logic signal from said logic controller.

A digital crossbar switch for switching data between an internal data bus and one or more input/output data buses, comprising:

• plurality of multiplexer logic units:
• an m-bit internal data bus coupled to each of said multiplexer logic units where m is an integer;
• a plurality of n-bit input/output data buses one connected to each of said multiplexer logic units where n is an integer;
• a m/n to 1 channel selector, where m/n is an integer, in each multiplexer logic unit having an input connected to said internal data bus and an output coupled to a corresponding one of said input/output data buses and operative in response to a configuration control signal to switch a selected channel of data from said internal data bus to the corresponding input/output data bus;
• memory storage for configuration control signals coupled to said m/n to 1 multiplexer;
• and
• an input selector having an input coupled to a corresponding one of said input/output data buses and an output coupled to said internal data bus for transmitting a channel of data from said input/output data bus to said internal data bus in response to an input selector control signal.