ROM data loading module, device and method

Abstract

The embodiment of the invention provides an ROM data loading module, device and method, and relates to the field of data loading. The ROM data loading module is used for obtaining a data reading address sent by the processor after the power-on initialization of the processor is finished; and the ROM data loading module is also used for reading the ROM data corresponding to the data reading addressin the read-only memory through the data selector, so that the processor acquires the ROM data. After the power-on initialization of the processor is finished, the ROM data loading module can read the ROM data corresponding to the data reading address in the read-only memory through the data selector, so that the processor obtains the ROM data. Therefore, the CPU can read the data in the ROM after power-on initialization is completed, and support is provided for functional diversity and design feasibility of a circuit chip.

Description

technical field [0001] The present application relates to the field of data loading, in particular, to a ROM data loading module, device and method. Background technique [0002] ROM (Read-Only Memory) is a read-only memory. During the chip manufacturing stage, pre-stored data (for example, boot programs) are burned in ROM through a specific mask and cannot be changed. [0003] A VLSI chip is often embedded with a CPU. During the power-on initialization process of the chip, the CPU needs to read initialization data from the ROM to successfully complete the power-on initialization of the CPU. The existing initialization data reading method is that the CPU reads the initialization data in the ROM through the SPI (Serial Peripheral Interface) module, and the data in the ROM cannot be read after the CPU is powered on and initialized. [0004] However, with the increase of functional diversity and design complexity of the circuit chip, the CPU can no longer read the data in the ...

AI Technical Summary

Problems solved by technology

The existing initialization data reading method is that the CPU reads the initialization data in the ROM through the SPI (Serial Peripheral Interface, Serial Peripheral Interface) module, and the data in the ROM cannot be read after the CPU power-on initialization is completed

[0004] However, with the increase in the functional diversity and design complexity of the circuit chip, the CPU can no longer read the data in the ROM after the power-on initialization is completed, which will cause many functions of the circuit chip to be unable to be realized.

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