Budget sensor bus
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United States of America Patent
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Issued Date -
Feb 23, 2006
app pub date -
Aug 23, 2004
filing date -
Aug 23, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A single-wire bus protocol named Budget Sensor Bus (BBUS) for simplified system management. The BBUS may transmit information packets in NRZ format from a monitored device/circuit to a host. In one embodiment, each packet comprises a start sequence, a data type, a device or register number, device data, and a stop sequence. The BBUS may directly transmit raw data bits from the monitored device/circuit to the host and may use the start sequence to communicate to the host the bit frequency that is used by the monitored device/circuit. Following the start sequence the host may get in sync with the monitored device/circuit and may be enabled to directly read the data bits that follow. The BBUS may provide a means for the monitored device/circuit to immediately transfer device information to the host. All functions and operations required to interpret the device information may reside within the host. The BBUS may transmit information packets from the monitored device/circuit to the host, but not from the host to the monitored device/circuit. In one embodiment the BBUS is used for thermal management, where the monitored device/circuit comprises temperature/voltage sensors, the host is an SIO controller, and temperature/voltage data is transmitted from the sensors to the SIO controller.
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