Method for reusing unique subordinate identification in a serial bus circuit

Abstract

Reusing unique subordinate identification (USID) in a serial bus circuit is disclosed. The serial bus circuit includes a main circuit configured to drive multiple subordinate circuits over a serial bus(es). Herein, each of the subordinate circuits is uniquely identified by a USID. As the complexity and functionality of the serial bus circuit grow, the subordinate circuits can outnumber available USIDs configured for the serial bus circuit. In this regard, embodiments disclosed herein make it possible to group some subordinate circuits into a virtual group(s) and uniquely identify the virtual group by the USID of a selected subordinate circuit in the virtual group.

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