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Method and device for determining time sequence parameter of input/output bus

An output bus and parameter determination technology, applied in the field of communication, can solve problems such as waste of access time, achieve the effects of avoiding waste of access time, and solving operational efficiency and stability

Inactive Publication Date: 2009-09-02
HUAWEI TECH CO LTD
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0007] The existing technology has the problem of wasting access time, that is, the access time of most single boards is sacrificed for the difference of individual boards

Method used

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  • Method and device for determining time sequence parameter of input/output bus
  • Method and device for determining time sequence parameter of input/output bus
  • Method and device for determining time sequence parameter of input/output bus

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Embodiment Construction

[0024] 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. It should be understood that the described embodiments are only some of the embodiments of the present invention, not all of them. example. 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.

[0025] Embodiments of the present invention provide a method for determining IO-BUS timing parameters, such as figure 1 , including the following steps:

[0026] Step 10: Select a group of IO-BUS timing parameters, take the initial value of the selected group of timing parameters as the center value of dynamic scanning, adjust the initial value to the specified boundary, and fix other groups of the IO-BUS Timing paramet...

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Abstract

The embodiment of the invention provides a method for determining IO-BUS time sequence parameters of an input / output bus, which relates to the field of communication. The method comprises the steps: a group of IO-BUS time sequence parameters is selected, initial values of the group of time sequence parameters are used as center values of dynamic scan, the initial values are regulated to a standard boundary, the time sequence parameter values of other groups of the IO-BUS are fixed, the IO-BUS time sequence parameters are configured by values of the initial values which are regulated to the standard boundary and the time sequence parameter values of other groups, the IO-BUS with the configured time sequence parameters accesses at least two addresses as standard time, and if the addresses are successfully accessed in the standard time, the current values of the selected group of sequence parameters are used as determining values of the selected group of sequence parameters. The embodiment of the invention also provides a corresponding device and can select proper IO-BUS time sequence parameters according to different individual differences and operating environments of single plates, and consequently, the conflict between the operating efficiency and the operating stability can be effectively solved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for determining timing parameters of an input / output bus. Background technique [0002] The input / output bus (IO-BUS, Input / Output BUS), as a mature inter-chip bus, is widely used in various single-board products, and its wiring is simple and the technology is mature. At present, the main devices on each wireless manufacturing board are: CPU, complex programmable logic device (CPLD, Complex programmable Logical Device), logic chip and external double-rate SDRAM (DDR, DSP, Digital Signal Processor) of digital signal processor (DSP, Dual Data RateSDRAM) are accessed by other devices through this bus. IO-BUS is not only responsible for the transmission of control commands in the World Interoperability for Microwave Access (WiMAX, World Interoperability for MicrowaveAccess) base station, such as the access task of chip registers, but also shoulders the tra...

Claims

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Application Information

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IPC IPC(8): G06F13/42
Inventor 王天成李祥
Owner HUAWEI TECH CO LTD
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