ARM processor and FPGA bi-directional data transmission implementation method

Abstract

The invention provides an ARM processor and FPGA bi-directional data transmission implementation method. The method at least includes creating a data transmission interface of the ARM processor, configuring a data transmission approach of the data transmission interface of the ARM processor, providing FPGA of data transmission interface that matches the data transmission interface and the data transmission approach of the ARM processor, and connecting the ARM processor with the FPGA through respective data transmission interfaces, thereby the bi-directional data transmission of the ARM processor and FPGA is achieved. By utilizing component parts and signals of an EIM interface of the NXP ARM processor and introducing parts of GPIO pins of ARM processor, the method creates an interface that is able to transmit parallel data bi-directionally at high speed, simplifies the signal connection method of EIM interface and reduces the development cost and difficulties of FPGA and the ARM processor data transmission.

Description

technical field [0001] The invention relates to the technical field of data transmission, in particular to a method for realizing bidirectional data transmission between an ARM processor and an FPGA. Background technique [0002] For NXP (NXP Semiconductors), most of the application processors (mainly ARM processors) produced by it adopt EIM (External Interface Module, external interface module) interface. EIM interface is an expandable interface module, which mainly includes chip select signal, clock signal, control signal, address line and data line, etc. The controller of this interface mainly supports SRAM-like interface, NOR-Flash-like interface and PSRAM-like interface for data access. [0003] Since the EIM interface of the NXP ARM processor is not designed for data transmission with FPGA (Field Programmable GateArray, Field Programmable Gate Array), it is an extensible interface designed to be compatible with various memory chip types . The EIM interface mainly in...

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Problems solved by technology

[0005] In view of the above-mentioned shortcoming of prior art, the object of the present invention is to provide a kind of realization method of ARM processor and FPGA two-way data transmission, be used to solve the complex EIM interface of NXP ARM processor in the prior art, and FPGA data communication When the FPGA is required to have an interface that matches its data access, resulting in the high cost and difficulty of development on the FPGA side

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