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PMIC: CP240x LCD Driver Family Slide 44
The SPI interface configuration for the CP2400 and CP2402 devices is shown on this page. They will always be the slave device to the master SPI node. The CP240x devices uses a 4 wire connection scheme that includes the chip select signal as typically found in a single master multiple slave topology. In this configuration, each slave device has its own chip select and when driven it is allowed to drive the MISO pins and all other inactive devices tri-state the pin.
PTM Published on: 2011-05-13