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Method for sanding and receiving data based on synchronous serial interface in digital signal processor

A synchronous serial and receiving method technology, applied in the direction of synchronization devices, digital transmission systems, electrical components, etc., can solve the problem of limited state detection capabilities of data transmission and reception synchronization, and it is difficult to fundamentally ensure the reliability of synchronous data transmission and reception. performance and other issues, to achieve the effect of lower occupancy rate, better distribution of CPU resources, high efficiency and reliability

Inactive Publication Date: 2003-12-24
HUAWEI TECH CO LTD
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Problems solved by technology

The disadvantage of this method is that the synchronization of data transmission and reception is limited by the DSP's ability to detect the state of the internal DMA controller and the synchronous serial interface, making it difficult to fundamentally guarantee the reliability of synchronous data transmission and reception.

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  • Method for sanding and receiving data based on synchronous serial interface in digital signal processor
  • Method for sanding and receiving data based on synchronous serial interface in digital signal processor
  • Method for sanding and receiving data based on synchronous serial interface in digital signal processor

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Embodiment Construction

[0027] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0028] figure 1 It is a flowchart of an embodiment of the method of the present invention. according to figure 1 , The method described in the first step of the present invention further includes formatting the sent or received data, and divides the sent or received data in units of data blocks, each data block includes multiple data frames, and each frame includes multiple data frames. Time slots, each time slot includes multiple bits. If you determine the size of the data block for each data transmission or reception and the division of data in the block, you can set the data transmission synchronization used when sending and receiving data through the synchronous serial interface of the digital signal processor (DSP) in step 2. Signal, and set the synchronization control interrupt signal. Based on the division of the data format in step 1 above, the settin...

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Abstract

When using synchronous serial interface of digital signal processor (DSP) sends and receives data, the data transmission signal, the synchronous control interrupt signal, the data send out buffer anddata receive buffer are setup. Under control of the transmission synchronous signal, the send module of the synchronous serial interface and the DMA send data controller sends data; the receive module of the synchronous serial interface and the DMA receive data controller receives data. The synchronous controlled interrupt signal controls the data send and data receive carried out by the DMA controller and the synchronous serial interface in DSP synchronously as well as monitors the data processing carried out by CPU in DSP. This mechanism lowers rate of occupying CPU and the data transmission can be returned to normal automatically when timing signal error or frame synchronous signal error occurs.

Description

Technical field [0001] The present invention relates to a data sending and receiving method in a communication system, in particular to a data sending and receiving method based on a digital signal processor synchronous serial interface. Background technique [0002] In computer and communication systems, the main purpose of the literacy signal processor (DSP) is to process digital signals. For most DSPs, it usually contains a central processing unit (CPU) for processing digital data algorithms and a direct access memory (DMA) controller for data transfer. At the same time, most of the synchronous serial interfaces of the DSP, which are the input and output data channels of the DSP, have the capability of multi-channel operation, for example, any time slot can be set to send and receive data. Under the coordination and management of the CPU within the DSP, the synchronous serial interface can cooperate with the DMA controller to realize the reception and transmission of synchrono...

Claims

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Application Information

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IPC IPC(8): H04L7/00
Inventor 李东滨
Owner HUAWEI TECH CO LTD
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