SPI Bus Synchronization
AssigneeWinbond Electronics Corp.
InventorItay Admon
Life of this patent
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Abstract
A method for Serial Peripheral Interface (SPI) operating-mode synchronization between an SPI host and an SPI device, which communicate over an SPI bus, includes predefining, in the SPI device, one or more values on the SPI bus as indicative of lack of synchronization of an SPI operating mode between the SPI host and the SPI device. Re-synchronization of the SPI operating mode is initiated in response to receiving any of the predefined values in the SPI device.
Claims24
A method for Serial Peripheral Interface (SPI) operating-mode synchronization between an SPI host and an SPI device that communicate over an SPI bus, the method comprising:
- predefining, in the SPI device, one or more values on the SPI bus as indicative of a fault caused by the SPI host and the SPI device operating in different SPI modes;
- and
- in response to receiving any of the predefined values in the SPI device, initiating a re-synchronization process that causes the SPI host and the SPI device to operate in the same SPI operating mode.
An apparatus, comprising:
- a Serial Peripheral Interface (SPI) host;
- and
- an SPI device, configured to:
- communicate with the SPI host over an SPI bus;
- and
- in response to receiving, on the SPI bus, any of one or more values, which are predefined in the SPI device as indicative of a fault caused by the SPI host and the SPI device operating in different SPI modes, initiate a re-synchronization process that causes the SPI host and the SPI device to operate in the same SPI operating mode.
Dependencies are inferred from the claim text.