Research Of General Digital Audio Experimental Platform Based On FPGA

With the revolution of information technology and the rapid development of computer technology, programmable logic technology has become a key science and technology,and FPGA has also been widely used in the industrial sector. Currently, FPGA devices are rapidly developing to go to the directions of new technology, high density, low voltage, high speed and etc. FPGA not only has become a powerful competitor of the standard logic devices, but also has replacing the ASIC. This thesis has been studied in the application of the digital audio experiment platform by the FPGA chips.●On the basis of minimizing interference and the space of PCB board, the circuit schematic, PCB diagram has been given. Finally,the PCB board has been made.●According to the introduction of register use part in TLV320AIC23B data manual,11 control words of register has been shown. And also according to the logic and timing requirements in data manual,the SPI module which is used to deploy the datas of TLV320AIC23B chip has been made.●Implemented data transfer mode of McBSP between the TLV320AIC23B and FPGA in logic. Each module used to implement this transfer mode has been elaborated,which include their functions and the achieve methods. Simulation charts and module symbol diagrams of each module has been given. Finally, the top-level connection diagram of all modules has been shown and passed the timing simulation.●Relying on to the interface mode of SPI and McBSP,a simple FIR filter has been designed which given an expression of the parallel processing capability of FPGA.●Established the data communication between the TLV320AIC23B and FPGA by using the Nios II core. Top-level connection diagram of kernel and modules has been shown. In order to realize the large amounts of data storage, API functions these can access hardware devices have been used.