Patent ID: 11928065
Assignee: STMICROELECTRONICS S.R.L.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 10:
11. A method for interrupt management in a digital communication system including a master device and a plurality of slave devices communicatively coupled with the master device over a shared data communication bus, wherein the digital communication system includes a respective selection line for each one of the slave devices, coupling the master device with a respective slave device and dedicated to selection by the master device of the respective slave device for communication over the shared data communication bus, each respective selection line is in a first state when no communication occurs between the master device and the respective slave device, the method comprising:
sending, by each of the slave devices, an interrupt request to the master device over the respective selection line; and
serving, by the master device, the interrupt request initiating a communication over the shared data communication bus,
driving, by the respective slave device, the respective selection line into a second state, different from the first state, to communicate the interrupt request to the master device; and
releasing, by the respective slave device, the respective selection line, after a given time interval from driving it to the second state,
wherein each selection line is a bidirectional communication line between the respective slave device and the master device.