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US 2010/0064074 A1Published application
Single wire bus interface
AssigneeQUALCOMM Incorporated
InventorsDavid W. Hansquine, Brett C. Walker, Muhammad Asim Muneer
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AssigneeQUALCOMM Incorporated
InventorsDavid W. Hansquine, Brett C. Walker, Muhammad Asim Muneer
Estimating the term…
Embodiments disclosed herein address the need for a single wire bus interface. In one aspect, a device communicates with a second device via a single wire bus using a driver for driving the bus with a write frame comprising a start symbol, a write indicator symbol, an address, and data symbols. In another aspect, the device receives one or more data symbols on the single wire bus during a read frame. In yet another aspect, a device communicates with a second device via a single wire bus using a receiver for receiving a frame on the single wire bus comprising a start symbol, a write indicator symbol, an address, and one or more data symbols, and a driver for driving return read data associated with the address when the write indicator identifies a write frame. Various other aspects are also presented. These aspects provide for communication on a single wire bus, which allows for a reduction in pins, pads, or inter-block connections between devices.
A master device configured to communicate with a slave device, and having a local clock that is isolated from and phase independent of a local clock in the slave device, and further including circuitry for exchanging control and data with the slave device over a single wire serial bus at a clock rate determined by the local clock of the master device.
A slave device configured to communicate with a master device, and having a local clock that is isolated from and phase independent of a local clock in the master device, and further including circuitry for exchanging control and data with the master device over a single wire serial bus at a clock rate determined by the local clock of the slave device.
A method of exchanging control and data from a first device to a second device over a single wire serial bus interface, the method including clocking transmitted and received bits using a protocol that uses a local clock in the first device that is isolated from and phase independent of a local clock in the second device and at a clock rate determined by the local clock of the first device.
A computer program product for use in a first device configured for exchanging control and data from a first device to a second device over a single wire serial bus interface, the computer program product including instructions for causing the first device to clock transmitted and received bits using a protocol that uses a local clock in the first device that is isolated from and phase independent of a local clock in the second device and at a clock rate determined by the local clock of the first device.
A device configured to communicate with a second device, including means for generating a local clock signal that is isolated from and phase independent of a clock signal generated by the second device, and further including means for exchanging control and data with the second device over a single wire serial bus at a clock rate based on the local clock signal of the device.
Dependencies are inferred from the claim text.