SERIAL PERIPHERAL INTERFACE (SPI) CONTROL DEVICE, SPI SYSTEM AND METHOD OF DETERMINING A SPI DEVICE

摘要

A SPI system includes a SPI device and a SPI control device. The SPI control device is for providing a read command of a fast read command format in response to a driving signal outputted by a south-bridge chip. The SPI device stores preset data in a preset address and outputs output data to the SPI control device in response to the read command. The SPI control device is for determining whether the output data is substantially equal to the preset data. When the output data is substantially equal to the preset data, the SPI control device provides a command of the fast read command format to read the SPI device.