Communication system and communication method between multiple processors based on FPGA (Field Programmable Gate Array)

Abstract

The invention discloses a communication system and a communication method between multiple processors based on an FPGA (Field Programmable Gate Array). The communication system comprises processors and an FPGA module connected with the processors; the FPGA module comprises interface units, cache units and a control unit which are sequentially connected with each other; the number of the interfaceunits and the number of the cache units are determined according to the number of processors needing to be communicated, wherein one end of each interface unit is connected with a communication interface of one processor, and used for sending and receiving a communication instruction by the processor; the other end of the interface unit is connected with the control unit through the cache units; and the control unit is used for transferring a communication instruction received by a cache unit of a source end processor to a cache unit of a destination end processor. The communication system ofthe invention can support different processors to realize mutual communication by adopting different communication interface types; the processors can all initiate communication requests without master slave restrictions; and for a system designed originally with an FPGA device, the complexity of a system circuit can be reduced and the system stability can be improved.

Description

technical field [0001] The invention relates to the field of communication and digital signal processing, in particular to a communication system and a communication method between FPGA-based multiprocessors. Background technique [0002] With the development of communication technology, the amount of data that processors need to process has increased sharply. A single processor can no longer meet the functional and performance requirements of the device. Multiple processors need to be integrated in a device or system, and each processor completes part Function, multi-processors work together to achieve the target function, therefore, the demand for mutual communication between the processors also increases. [0003] At present, the communication interfaces supported by the processor mainly include parallel bus interface, Ethernet interface, asynchronous RS232 interface and SPI interface. [0004] In order to realize the communication between multi-processors, it is often n...

AI Technical Summary

Problems solved by technology

[0005] For the Ethernet interface communication mode, an additional Ethernet switch chip and peripheral circuits are required, and some processors with simple functions do not support the Ethernet interface; for dual-port RAM or RS232 communication mode, only two processors can be connected at the same time. Communication; for the SPI communication method, only one processor can be used as the master, and the rest of the processors can be used as slaves. The slaves can only receive communication requests, but cannot initiate communication requests, so the communication capability is limited

[0006] In addition, all the above-mentioned communication methods require that the communication interface types used by each processor must be the same, but in actual use, because each processor has different requirements for communication bandwidth, in order to adapt to the processor with the largest communication bandwidth requirements, the rest All processors must use the same communication interface, resulting in waste of processor performance and cost

Images