Digital accessory interface
AssigneeCirrus Logic, Inc.
InventorWillem Zwart
Life of this patent
Estimating the term…
Abstract
A method for transferring data over a half-duplex wired communications link, comprises, in each of a plurality of frames: transferring a synchronization data pattern in a first direction; transferring first payload data in the first direction; transferring second payload data in a second direction opposite to the first direction; and transferring control data, wherein the format of the frame is such that, irrespective of whether the control data is transferred in the first direction or in the second direction, there is only one pair of reversals of a direction of data transfer in each frame.
Claims16
A method for transferring data over a half-duplex wired communications link, comprising, in each of a plurality of frames:
- transferring a synchronization data pattern in a first direction;
- transferring first payload data in the first direction;
- transferring second payload data in a second direction opposite to the first direction;
- and
- transferring control data, wherein the format of the frame is such that, irrespective of whether the control data is transferred in the first direction or in the second direction, there is only one pair of reversals of a direction of data transfer in each frame.
A device for transmitting and receiving data over a half-duplex wired communications link, the device being configured to, in each of a plurality of frames:
- transmit a synchronization data pattern in a first direction;
- transmit first payload data in the first direction;
- receive second payload data in a second direction opposite to the first direction;
- and
- transmit or receive control data, wherein the format of the frame is such that, irrespective of whether the control data is transferred in the first direction or in the second direction, there is only one pair of reversals of a data transfer direction in each frame.
A device for transmitting and receiving data over a half-duplex wired communications link, the device being configured to, in each of a plurality of frames:
- receive a synchronization data pattern in a first direction;
- receive first payload data in the first direction;
- transmit second payload data in a second direction opposite to the first direction;
- and
- transmit or receive control data, wherein the format of the frame is such that, irrespective of whether the control data is transferred in the first direction or in the second direction, there is only one pair of reversals of a data transfer direction in each frame.
Dependencies are inferred from the claim text.