1. A system, comprising: a bus configured to receive spike event data from a plurality of neurosynaptic core circuits in response to a neuron of the plurality of core circuits firing, wherein the plurality of neurosynaptic core circuits are interconnected via at least one router configured to route one or more packets between the plurality of neurosynaptic core circuits, and the spike event data comprises a packet including a spike and a target address for the spike; and at least one spike-to-data converter unit configured to: receive the spike event data from the bus; convert the spike event data to digital numeric data in accordance with a spike coding scheme, wherein the digital numeric data is based on at least one of the target address or a time at which the at least one spike-to-data converter unit receives the spike event data; and output the digital numeric data to an external environment as output data representing motor outputs.