Method for converting data between interface of parallel processor and AHB interface of AMBA in RISC system

Abstract

The invention relates to a method for switching data between an AHB interface of AMBA and a parallel processor interface in an RISC system, which comprises the following steps: data switching group quantity in a single operation between a high-grade high-speed bus interface of a high-grade microcontroller bus framework and a general-purpose parallel microprocessor interface is determined, data transmitted by the high-grade high-speed bus of the high-grade microcontroller bus framework are switched into grouped data at the general-purpose parallel microprocessor interface according to the dataswitching group quantity, and the grouped data are transmitted by the general-purpose parallel microprocessor interface. With the adoption of the method for switching data between the AHB interface ofAMBA and the parallel processor interface in an RISC system, the operation of data switching and transmission can be finished in a single operation by the AHB interface of the AMBA, thus greatly saving AMBA AHB bus resources of RM and effectively improving the transmission efficiency of data switching between interfaces. In addition, the method for switching data between the AHB interface of AMBAand the parallel processor interface in the RISC system is convenient and rapid in use, and has stable and reliable work performance and wider application scope.

Description

technical field [0001] The present invention relates to the field of RISC processor (RM) systems, in particular to the technical field of data conversion between interface types in RISC processor systems, specifically referring to the data conversion between the AHB interface of AMBA and the parallel microprocessor interface in a RISC system method. Background technique [0002] With the continuous development of modern computer technology, more and more RISC processor systems have been used in various fields, and in this RM system, the most widely used interface is AMBA (Advanced Microcontroller Bus Architecture, Advanced Microcontroller Bus Architecture ) in AHB (Advanced High Speed ​​Bus, Advanced High Speed ​​Bus (AHB) interface, and for the typical interface timing of the AHB interface in AMBA, please refer to figure 1 As shown, it is mainly used on the interface between the RM and the slave device. For the typical interface timing of PARALLEL HOST (general parallel m...

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Problems solved by technology

[0003] In the prior art, it is often necessary to convert the AMBAAHB interface data into the interface data of the PARALLEL HOST, and the conventional method is to read and write the AHB interface of the AMBA ( figure 1 shown in ) into a set of transports for the PARALLELHOST interface ( figure 2 shown in ); if the bus width of the PARALLEL HOST interface is small, such as 8 bits, and each group of address and data transmitted is only 8 bits, while the AMBA bus is 32 bits; then if each AMBA bus AHB interface read and write operation corresponding conversion A group of PARALLEL HOST interface transmission, so AMBA AHB needs 4 operations to complete a 32bits data transmission, so the efficiency of data conversion is relatively low

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