I want to send some specific bits to a DAC714P with a F28335 DSP. The DAC714P is a 16 bit Digital to Analog converter with serial data interface. I am doing the programming in Matlab/Simulink but i dont know why i am having problems with the communication because i dont have the specific voltage output for that specific binary data. I am using the SPI transmit block from Matlab/Simulink. Does anyone have some reference covering a similar problem?