McBSP includes a data channel and a control channel, which are connected with external devices through seven pins. The data sending pin DX is responsible for sending data and the data receiving pin DR is responsible for receiving data. The transmit clock pin CLKX, the receive clock pin CLKR, the transmit frame synchronization pin FSX and the receive frame synchronization pin FSR provide serial clocks and control signals. McBSP is the abbreviation of English Multichannel Buffered Serial Port. McBSP is a mulTI-channel buffer serial port of digital signal processing chip produced by ti company. McBSP is an extension of the standard serial interface, so it has the same basic functions as the standard serial interface. It can communicate with other DSP devices, encoders and other serial devices.