Information/software interface having serial communications detection logic/electronics for determining either a host or an embedded microcomputer device controller connected thereto

摘要

An improved communication interface for an embedded microcomputer device controller is provided. The interface includes serial communications detection logic/electronics for identifying the nature of external elements connected to the interface, and multiplex logic/electronics for programming and/or reprogramming the embedded microcomputer device controller in response to input signals received from a host device having a serial interface.