Patent ID: 8050176

Claim:
A method of clearing latch-up and other single event functional interrupts in a data processing system having a plurality of nodes operatively connected to a serial data bus, the method comprising using a first node of the plurality to: periodically transmit a first message to other nodes of the plurality on a first line of the serial data bus, each other node including a physical layer controller connected to the first line and a link layer coupled to the physical layer; wherein each node of the plurality includes a non-radiation hardened bus interface; determine whether the first message was received by each of the other nodes; and transmit a recovery command to a second node of the plurality if the second node does not respond to the first message, the recovery command transmitted via an alternative data bus path; wherein the recovery command causes the second node to disrupt a mono-stable condition in at least one of its physical and link layer controllers and restore the at least one of the physical and link layer controllers functionality without disrupting the first node and any other nodes of the plurality so that the second node can resume communications on the first line of the serial data bus.