Circuit Design Of TS201 Multi-channel Acquisition Platform

With the development of underwater acoustic communication technology,large-scale hydrophones and transducer array came into being.Therefore,data collection system is required more,which includes more aisles and more requirements on resolution,sampling rate and data interface capability.In this paper,one multi-channel collection platform based on TS201 is designed,AD7764 and PCM1794 A of 24-bit resolution is applied,16-channel analog acquisition and 16-channel digital-to-analog conversion is realized.Firstly,this paper makes analysis and design of technical solution according to technology requirements,which is general idea of follow-up specific design,and introduces CPCI bus technology which is the main device.TS201 signal processor which has super processing capacity and ultra-high data interface capability is used.The host can load TS201 code and monitor the system by using CPCI bus.This paper explains and analyses much about system hardware circuit design afterwards,which include DSP,CPCI bus interface,ADC,DAC,system clock and power circuit.The design can be completed successfully basing on deep understanding of devices and protocols which is the basis of hardware circuit design.After hardware circuit design,it is FPGA logic design and system debugging.Top layer logic module diagram is designed according to function demand of FPGA,after that the design of each logic module is described in detail,which introduces mainly about TS201 bus interface design of host and FPGA interface design of DSP,and provides bus timing diagram.At last system debugging demonstrates the correctness of system design.