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Digital signal processor addressing method

A digital signal and processor technology, applied in the field of digital signal processor addressing, can solve problems such as unsatisfactory DSP addressing method support, and achieve the effect of reducing memory access time

Active Publication Date: 2012-08-08
安徽芯纪元科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0017] The addressing method of DSP is closely related to its internal memory and bus structure, for how to realize efficient data access based on the large-bandwidth memory block that forms in the array mode and face digital signal processing application, existing DSP addressing method can The support provided is not ideal

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Embodiment Construction

[0121] The present invention will be described in detail below by taking the BWDSP100 digital signal processor as an example.

[0122] The structure block diagram of BWDSP100 digital signal processor is as follows: figure 2 shown. The BWDSP100 digital signal processor contains 4 calculation cores X, Y, Z, T, each calculation core contains a general-purpose register group (composed of 64 registers R0~R63), a memory access unit and a set of arithmetic components: 4 A multiplier, 8 arithmetic logic units (ALU), 2 shifters, and a specific function operation circuit. There is a high degree of parallelism between the computing components located in each computing core. In order to reduce the complexity of control, a combination of single instruction multiple data (SIMD) and multiple instruction multiple data (MIMD) is used to perform multiple calculations inside the DSP. components are controlled. The SIMD method is used for control between the computing cores, that is, one inst...

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Abstract

Belonging to the technical field of computer digital signal processing, the invention specifically relates to a digital signal processor addressing method. The addressing method comprises following steps that: the access unit of the digital signal processor reads data from an embedded memory; the access unit writes the read data in the register set of the digital signal processor; the arithmetic unit in the digital signal processor carries out calculation by taking the data in the register set as a source operand, and writes a calculating result back in the register set; the access unit writes the calculating result in the register set back in the embedded memory; and the access unit accesses the data in the embedded memory by selecting one from the addressing types of direct addressing, base address offset addressing, matrix norm addressing, and bit-reversed addressing. Based on large bandwidth storage blocks formed in an array mode, the addressing method of the invention can realize highly efficient data access, facing digital signal processing application.

Description

technical field [0001] The invention belongs to the technical field of computer digital signal processing, and in particular relates to an addressing method for a digital signal processor. Background technique [0002] Digital signal processing has become a main means to improve product performance. As a device based on the characteristics of digital signal processing, digital signal processor (DSP) has become an indispensable core device of digital system. Driven by application requirements, the performance of DSP has been continuously improved. At present, new systems such as radar and 4G communication have put forward higher requirements for DSP performance. [0003] The realization of high-performance computing essentially depends on the number of computing components activated per unit of time. The number of computing components activated can be described by the following formula: [0004] UnitNum = Σ 0 ...

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Application Information

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IPC IPC(8): G06F9/34
Inventor 洪一郭二辉耿锐刘小明汪灏
Owner 安徽芯纪元科技有限公司