SLAVE INITIATED INTERRUPTS FOR A COMMUNICATION BUS
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United States of America Patent
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Jul 26, 2016
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Jul 26, 2016
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Slave initiated interrupts for a communication bus are disclosed. In one aspect, the communication bus is a radio frequency front end (RFFE) bus, and a slave is allowed to indicate to a master on the RFFE bus that the slave has an interrupt condition. On receipt of a slave initiated interrupt, the master may initiate a polling sequence to determine which of a plurality of slaves associated with the RFFE bus initiated the interrupt and process the interrupt accordingly. Continuing the exemplary aspect, the slave may indicate the interrupt condition to the master by driving a clock line of the RFFE bus to a non-idle state. The master may detect this manipulation of the clock line and initiate the polling sequence.
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