A programmable interface between an IC device and a circuit device is provided, the programmable interface having a bit-encoded output. The programmable interface includes a reference voltage contact and a connection to the circuit device. The connection to the circuit device is associated with the bit-encoded...http://www.google.com/patents/US6229378?utm_source=gb-gplus-sharePatent US6229378 - Using programmable jumpers to set an IC device's bit-encoded output during manufacturing and testing