Bus-handling
First Claim
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1. A processor, comprising:
- a processing unit having an active state and a sleep state in which at least one of the sub-sections of the processing unit is inactive;
a communication port adapted to receive signals from external units over a bus, which is configured not to be fully operative in the sleep state; and
a bus monitoring unit configured to stall the bus responsive to identifying transmissions on the bus directed to the communication port, while the processing unit is in the sleep state and to indicate to the communication port that a transmission had started while the port was in the sleep state.
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Abstract
A processor, comprising a processing unit having an active state and a sleep state in which at least one of its sub-sections is inactive and a communication port adapted to receive signals from external units over a bus, which is configured to be not fully operative when the processor is in the sleep state. The processor additionally includes a bus monitoring unit configured to stall the bus responsive to identifying transmissions on the bus directed to the communication port, while the processing unit is in the sleep state and to indicate to the communication port that a transmission started while it was in the sleep state.
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Citations
10 Claims
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1. A processor, comprising:
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a processing unit having an active state and a sleep state in which at least one of the sub-sections of the processing unit is inactive; a communication port adapted to receive signals from external units over a bus, which is configured not to be fully operative in the sleep state; and a bus monitoring unit configured to stall the bus responsive to identifying transmissions on the bus directed to the communication port, while the processing unit is in the sleep state and to indicate to the communication port that a transmission had started while the port was in the sleep state. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of handling transmissions, comprising:
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identifying a transmission received over a bus, while a port intended to receive the transmission is in a sleep state; moving the port into an operative state; and stalling the bus responsive to receiving the transmission, until the port is in the operative state. - View Dependent Claims (9, 10)
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Specification