A memory access system based on vliw type processor

Abstract

The invention relates to a memory access system based on a VLIW type processor, comprising: a data memory with multiple data channels, and the multiple data channels access the data memory in parallel; an instruction memory with a write port and a read port, and the write port has a high priority on the read port; the processor includes a processor core, a direct memory access controller, a debug module and an arbiter, and the processor core includes an instruction fetch unit, a first memory access unit and a second memory access unit, and the instruction fetch unit and the read Port connection, the first memory access part is directly connected to the data memory through the data channel, the second memory access part, the direct memory access controller and the debugging module are connected to the arbitrator, and other memory access parts in the processor core are connected to the arbitrator through the bus The arbiter is connected to the data memory through the data channel, and the direct access controller is connected to the write port. Compared with the prior art, the present invention has the advantages of high efficiency of simultaneous memory access by multiple memory access components.

Description

technical field [0001] The invention relates to a data access storage technology of a processor, in particular to a memory access system based on a VLIW type processor. Background technique [0002] Digital Signal Processor (DSP) is a microprocessor with a special structure, which is specially used to process large-scale digital signals. The real-time running speed of special-purpose digital signal processors is generally faster than that of general-purpose processors. Its main feature is powerful digital computing capabilities, so it is mainly used in fields involving large-scale digital information calculations. Digital signal processors (DSPs) have become increasingly important chips in the digital world. [0003] With the rapid development of high technology, the performance requirements for digital signal processors (DSP) are also getting higher and higher. Technologies such as Very Long Instruction Word (VLIW) and Single Instruction Multiple Data (SIMD) have been wid...

AI Technical Summary

Problems solved by technology

However, the disadvantage of this is that parallel access to the processor by multiple components cannot be realized, resulting in low system efficiency

Another strategy that can access memory in parallel is to use dual-port memory instead of ordinary single-port memory, but this will increase the delay of a single access, and will also increase the area and power consumption of the entire chip

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