Serial communication method
First Claim
1. A serial communication method for a layered communication architecture of a first device including a first layer, a second layer that is higher than the first layer, and a third layer that is higher than the second layer, the serial communication method comprising:
- transferring a first signal including a first symbol to the second layer based on a signal received at the first layer through a communication line from a second device, said transferring the first signal performed by the first layer;
informing the third layer of reception of the first signal using a related signal based on but different from the first signal, said informing performed by the second layer without sending the first symbol to the third layer;
responding to the second layer with a response based on whether there is a task to be performed, said responding performed by the third layer without sending the first symbol to the second layer;
when there is no task to be performed, transferring a signal corresponding to the first symbol through the communication line, said transferring the signal performed by the first layer;
transferring a second signal to the first layer based on the response from the third layer, said transferring the second signal performed by the second layer; and
entering a first power saving state according to the second signal, said entering the first power saving state performed by the first layer,wherein the serial communication method is used in a universal flash storage (UFS) interface, the first layer is a mobile industry processor interface (MIPI) M-PHY layer, and the second layer is an MIPI UniPro layer,wherein the first symbol and the signal corresponding to the first symbol are used at the first device and the second device to control power.
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Abstract
A serial communication method for a layered communication architecture includes a first layer, a second layer that is higher than the first layer, and a third layer that is higher than the second layer. The serial communication method includes transferring a first signal to the second layer based on a signal received through a communication line, the transferring performed by the first layer. The serial communication method further includes informing the third layer of reception of the first signal, the informing performed by the second layer; responding to the second layer based on whether there is a task to be performed, the responding performed by the third layer; transferring a second signal to the first layer based on a response from the third layer the transferring performed by the second layer; and entering a power saving state according to the second signal, the entering performed by the first layer.
23 Citations
19 Claims
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1. A serial communication method for a layered communication architecture of a first device including a first layer, a second layer that is higher than the first layer, and a third layer that is higher than the second layer, the serial communication method comprising:
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transferring a first signal including a first symbol to the second layer based on a signal received at the first layer through a communication line from a second device, said transferring the first signal performed by the first layer; informing the third layer of reception of the first signal using a related signal based on but different from the first signal, said informing performed by the second layer without sending the first symbol to the third layer; responding to the second layer with a response based on whether there is a task to be performed, said responding performed by the third layer without sending the first symbol to the second layer; when there is no task to be performed, transferring a signal corresponding to the first symbol through the communication line, said transferring the signal performed by the first layer; transferring a second signal to the first layer based on the response from the third layer, said transferring the second signal performed by the second layer; and entering a first power saving state according to the second signal, said entering the first power saving state performed by the first layer, wherein the serial communication method is used in a universal flash storage (UFS) interface, the first layer is a mobile industry processor interface (MIPI) M-PHY layer, and the second layer is an MIPI UniPro layer, wherein the first symbol and the signal corresponding to the first symbol are used at the first device and the second device to control power. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A serial communication method used in a universal flash storage (UFS) interface between a host and a device, the serial communication method comprising:
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receiving at a mobile industry processor interface (MIPI) M-PHY layer of the device a signal corresponding to a first symbol through a communication line and transferring the first symbol to an MIPI UniPro layer of the device; informing an application layer of the device of reception of the first symbol using a related signal based on but different from the first symbol, said informing performed by the MIPI UniPro layer without sending the first symbol to the application layer; responding to the MIPI UniPro layer with a response based on whether there is a task to be performed, said responding performed by the application layer without sending the first symbol to the MIPI UniPro layer; when there is no task to be performed, transferring the signal corresponding to the first symbol to the host through the communication line, said transferring the signal performed by the MIPI M-PHY layer; requesting the MIPI M-PHY layer to enter a first power saving state based on the response from the application layer, said requesting performed by the MIPI UniPro layer; and entering the first power saving state in response to the request for entry to the first power saving state, said entering performed by the MIPI M-PHY layer, wherein the first symbol and the signal corresponding to the first symbol are used at the host and the device to control power. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A serial communication method between first and second devices, comprising:
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entering a communication mode to serially transmit and receive data between the first and second devices, wherein the second device comprises a first layer, a second layer that is higher than the first layer, and a third layer that is higher than the second layer; receiving a first symbol at the first layer of the second device from the first device; transferring the first symbol from the first layer to the second layer; informing, by the second layer, the third layer of reception of the first symbol using a related signal based on but different from the first symbol and without sending the first symbol to the third layer; responding to the second layer by the third layer with a response based on whether there is a task to be performed and without sending the first symbol to the second layer; determining if data is available for transmission at the second device, responsive to receipt of the first symbol; transmitting the first symbol from the second device to the first device upon determination that data is not available for transmission at the second device; entering a power saving state at the second device responsive to the received first symbol, after said transmitting the first symbol to the first device; determining at the second device whether a communication line between the first and second devices transitions from a first logic level to a second logic level; and escaping from the power saving state at the second device upon determination of the transition, wherein the serial communication method is used in a universal flash storage (UFS) interface, the first layer is a mobile industry processor interface (MIPI) M-PHY layer, and the second layer is an MIPI UniPro layer, wherein the first symbol is used at the first and second devices to control power. - View Dependent Claims (16, 17, 18, 19)
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Specification