FPGA-based FlexRay communication module

Abstract

The invention discloses an FPGA-based FlexRay communication module. The FPGA-based FlexRay communication module comprises an FPGA minimum system unit, a FlexRay communication unit and a serial interface unit, wherein the FPGA minimum system unit consists of a power supply circuit, a clock circuit, a storage circuit and a debugging interface circuit; the FlexRay communication unit consists of two communication controllers and four bus drivers to form four paths of FlexRay bus channels; the serial interface unit consists of a device driving circuit, a level conversion circuit and an interface circuit to implement connection between a 16-path serial interface and a peripheral device; an IP core is utilized to implement logic and data receiving and transmitting functions of a serial interface and a FlexRay bus interface. The FPGA-based FlexRay communication module solves problems that an interface resource and communication capability during multi-path serial interface communication are insufficient, a FlexRay bus interface is provided for interaction of internal information of a unit-independent distributed system, and engineering application of an FPGA and improvement of serial communication capability are facilitated.

Description

technical field [0001] The present invention relates to a kind of FlexRay communication module based on FPGA, especially relate to a kind of programmable processor FPGA, and under this platform, adopt IP core mode to realize the communication module of multi-channel FlexRay bus line and serial interface, belong to network communication technology field. Background technique [0002] On the basis of the rapid development of programmable logic chips such as PAL, GAL, and CPLD, the programmable logic chip FPGA is used in embedded systems, which not only realizes the programmable user functions that single-chip computers can achieve, but also uses semi-customized professional integrated circuits. Programmable logic units with high flexibility are designed. At present, Xilinx has proposed the concept of SOP (System on Chip, System on Chip), integrating PowerPC series embedded hard cores in high-end products, such as Virtex-4 series embedded hard core PowerPC405, and further inte...

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Problems solved by technology

[0005] However, the current research on FPGA and IP core is still in the exploratory stage, and no major breakthrough has been made. It is difficult to adapt to the rapid development trend of embedded and communication fields, and it also seriously restricts its application in various fields.

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