A typical SPI protocol has MISO, MOSI data pins, and the data pins change their pin state (input/output) by the active mode (Master/Slave).
Since I read McBSP user guide, it only describes how the data pins connect to a master device or a slave device, so the pin state depends on hardware circuit ?
In other words, I must decide the active mode before circuit routing, and the DR/DX pin state is unchangeable if I want to change active mode (Master/Slave) during the device working ?
