Abstract: Disclosed are an SPI controller and a method of operating an SPI controller. The SPI controller includes: an SPI clock signal generator; a register group configured to store SPI operating configuration of the SPI controller; a plurality of SPI pins configured to connect to one or more SPI peripherals; and an input/output controller configured to perform data input or output between the SPI controller and the SPI peripherals according to the SPI clock signal and the SPI operating configuration; an SPI state machine configured to control a working state of the SPI controller. The SPI controller is electrically coupled via a bus to a CPU, a DMA controller, and a system memory located outside the SPI controller; and the input/output controller is further configured to receive an updated SPI operating configuration from the DMA controller and to update the updated SPI operating configuration into the register group between two consecutive SPI transmissions.

Abstract: An inner membrane removing device includes a heating membrane removing mechanism and a membrane suction mechanism located at a downstream of the heating membrane removing mechanism. The heating membrane removing mechanism includes a heating frame, a membrane pressing component, a membrane welding component configured to fusion weld a nest box inner membrane to a nest box inner lining paper, a first lifting component configured to enable the heating frame and the membrane welding component to be in contact with the nest box inner membrane and a second lifting component configured to enable the membrane pressing component to press against the nest box inner membrane. The membrane pressing component and the membrane welding component are located on an inside of the heating frame. An inner membrane removing method is also provided.