Patent ID: 6842868

Claim:
A connection integrity monitor for monitoring a connection unit, said connection unit comprising a primary connection map for receiving connection control signals and a primary connection circuit for performing primary connections between a plurality of inputs and a plurality of outputc in order to connect a plurality of input signals at said plurality of inputs to said plurality of outputs as output signals, said primary connections based on said connection control signals, said monitor comprising: a comparison map for receiving said connection control signals; an input selection circuit for: receiving said plurality of input signals; selecting one of said plurality of input signals as a selected input signal; an output selection circuit for: receiving said plurality of output signals; selecting one of said plurality of output signals as a selected output signal; where at least one of said selecting one of said plurality of input signals and said selecting one of said plurality of output signals is based on said connection control signals; a comparator for: receiving said selected input signal; receiving said selected output signal; and determining a connection integrity status indicator from said selected input signal and said selected output signal.