Design of the interface about AES3 digital audio based on LPC2138

With continuous development of digital audio technology,digital audio device has been widely used in the field of radio and television program.In view of the increasing demand for professional digital audio equipment,and the complexity of dedicated receiver and transmitter,this design mainly uses ARM7 microcontroller LPC2138 from Philips,to realize a simple system for AES/EBU(AES3) digital audio reception and transmission with other dedicated audio equipment chip.The experiment shows that the total harmonic distortion is less than 0.005%,and signal to noise ratio is greater than 90dBu when input signal is 1kHz,24dBu.