Data storage method and storage control device in DSP
A data storage, data technology, applied in the field of communication
Active Publication Date: 2012-10-03
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology
[0006] The blockage of the EDMA channel of the antenna interface will bring serious consequences. At this time, there will be an overall delay in the time point of EDMA moving data, resulting in misalignment of sending and receiving data
If you increase the priority of the EDMA started by the antenna interface, it may cause EDMA blocking of other devices, because the EDMA started by the antenna interface is always running, and this kind of blocking is likely to cause very serious errors.
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[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0036] The embodiment of the present invention provides a data storage method in a DSP, which is applied in a DSP including an EDMA switching network, and the DSP performs data interaction with an external device. The method as figure 2 shown, including:
[0037] Step s201, when receiving data, obtain the current time point;
[0038] Step s202, at the agreed time point, store the data received from the external device into the specified effectiv...
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The embodiment of the invention discloses a data storage method and a data storage control device in a digital signal processor (DSP). The method and the device are applied to the DSP which comprises an enhanced direct memory access (EDMA) switched network, and data interaction is performed between the DSP and external equipment. The method comprises the following steps of: when data is received,storing the data which is received from the external equipment into a specified valid data storage space at an appointed time point by using the EDMA switched network; and storing the data which is received from the external equipment into a specified invalid data storage space at other time points except the appointed time point by using the EDMA switched network, wherein the data interaction isperformed between the EDMA switched network and the valid data storage space, and between the EDMA switched network and the invalid data storage space through different buses respectively. Due to theadoption of the method and the device, EDMA congestion in the DSP can be avoided.
Description
technical field [0001] The invention relates to the communication field, in particular to a data storage method and a storage control device in a DSP. Background technique [0002] The latest DSP (Digital Signal Processor, digital signal processor) chip, such as TI's 64x+ series, provides an interface to realize the transmission of large amount of data, such as AIF (Antenna Interface, antenna interface). When using the antenna interface, it is necessary to continuously use EDMA (Enhanced Direct Memory Access, Enhanced Direct Memory Access) to read and write data from the storage space. [0003] In the prior art, a schematic diagram of data interaction between a DSP and a device supporting an antenna interface through an AIF interface is shown in figure 1 shown. Wherein, the DSP implements communication through the antenna interface and the device X supporting the antenna interface through the stream transmission protocol. When the antenna interface transmits, the two ends...
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IPC IPC(8): G06F12/00
Inventor 王希李坤
Owner DATANG MOBILE COMM EQUIP CO LTD