Processor hardware configuration word loading method and device

A hardware configuration and processor technology, applied in the field of digital circuits, can solve the problems of complicated process of changing hardware configuration words, introducing uncertain factors, affecting system stability, etc., reducing startup time, facilitating mass production and Maintenance and efficiency improvement

Inactive Publication Date: 2016-06-01
POTEVIO INFORMATION TECH
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Problems solved by technology

The process of changing the entire hardware configuration word is relatively complicated and takes a long time, and the power cannot be cut off during the modification process, so this method is no

Method used

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  • Processor hardware configuration word loading method and device
  • Processor hardware configuration word loading method and device
  • Processor hardware configuration word loading method and device

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Embodiment Construction

[0024] The method for loading processor hardware configuration words provided by the present application is a method for loading multiple configuration modes of processor hardware configuration words through switches and peripheral circuits. The method uses the following devices in the circuit: resistors, NOT gates, switches With the driver, the different hardware configuration words of the processor are loaded by closing or opening the switch. In order to simplify the design, the processor configuration words can be analyzed, and the internal functions of the processor can be used to reduce the pull-up and pull-down resistors. For different data bits, it is realized by devices that can invert the signal such as a NOT gate; by analyzing the hardware configuration words of the processor, find out the rules of the hardware configuration words corresponding to different working modes, and for those that are often low For the data bit, you can use the weak pull-down resistor insid...

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Abstract

The application discloses a processor hardware configuration word loading device. The processor hardware configuration word loading device comprises a second-category data bit output module and a third-category data bit output module. The second-category data bit output module comprises m branches, each branch comprises a resistor and a driver, an input end of each driver is pulled up to a power source through a corresponding resistor, and an output end of each driver outputs corresponding second-category data bits. The third-category data bit output module comprises at least one resistor, at least one NOT gate, at least one switch and n drivers respectively corresponding to n third-category data bits, an output end of each driver outputs corresponding third-category data bits, and an input end of each driver achieves connection through a corresponding resistor, a corresponding NOT gate and a corresponding switch; combination of high and low levels under corresponding operating modes is achieved through the resistors, the NOT gates and the switches, and combination switching of high and low levels under different operating modes is achieved through on and off of the switches; an enabling end of each driver is connected with a reset signal of a processor.

Description

technical field [0001] The present application relates to the technical field of digital circuits, in particular to a method and device for loading processor hardware configuration words. Background technique [0002] With the development of the electronics industry, the application scenarios of processors are becoming more and more extensive. General processors need to provide hardware configuration words at power-on reset, and the processor determines how to initialize the hardware resources of the processor according to the hardware configuration words obtained at reset, such as the processor working clock, data interface mode, and certain pins definition etc. [0003] The processor obtains the hardware configuration word when it is in the reset state, that is, the processor reads the data on the data bus when it is in the reset state, and determines its working mode according to the obtained data. If you want to change the operating mode of the processor, you must rese...

Claims

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Application Information

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IPC IPC(8): G06F1/24
Inventor 卫强黄健立
Owner POTEVIO INFORMATION TECH
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