DEVICE IDENTIFICATION GENERATION IN ELECTRONIC DEVICES TO ALLOW EXTERNAL CONTROL OF DEVICE IDENTIFICATION FOR BUS COMMUNICATIONS IDENTIFICATION, AND RELATED SYSTEMS AND METHODS

摘要

Device identification generation in electronic devices to allow external control, such as selection or reprogramming, of device identification for bus communications identification, is disclosed. In this manner, device identifications of electronic devices coupled to a common communications bus in a system can be selected or reprogrammed to ensure they are unique to avoid bus communications collisions. In certain aspects, to select or reprogram a device identification in an electronic device, an external source can be electrically coupled to the electronic device. The external source closes a circuit with a device identification generation circuit in the electronic device. The closed circuit provides a desired electrical characteristic detectable by the device identification generation circuit. The device identification generation circuit is configured to generate a device identification as a function of the detected electrical characteristics of the closed circuit from the external source.

主权项

1. An electronic device configured to reprogram its device identification, comprising:
a device identification port configured to be coupled to a communications bus; a device identification generation circuit coupled to the device identification port, the device identification generation circuit configured to:
detect an electrical characteristic of a communications bus signal received from the communications bus on the device identification port;generate a device identification based on the detected electrical characteristic; andstore the generated device identification in a device identification memory.