Interoperability of heterogeneous cores on acoustic signal processing and communication system

An acoustic signal processing and communication system is typically constituted with FPGA, DSP and application processors. These heterogeneous cores have different speed, throughput and peripheral interfaces, which results in barriers of data sharing among them. Texas Instruments' open-source component DSPLINK is an applicable solution for ARM and DSP communication. In this paper, DSPLINK architecture is optimized, FPGA is designed to act as part of the memory pool and SPI based synchronization protocol between the three cores is implemented. As an example of application, a system for cavitations monitoring based on OMAP and FPGA platform is introduced subsequently. Linux OS and DSP/BIOS are ported to ARM end and DSP end respectively, based on which the interoperable architecture is implemented. The developers can use interoperable APIs for data transfer so that more applications can be easily derived.