Self-starting serial boot program loading and reading system and method thereof

Abstract

The invention provides a self-starting serial boot program loading and reading system and method thereof. The system comprises a system chip and an exterior SPI interface storage, wherein the system chip comprises a CPU, an inner program storage, a self-starting serial boot program loading module, a two-way multiplexer and a standard SPI protocol interface. The self-starting serial boot program loading module is respectively connected with an input end I of the two-way multiplexer and the CPU and is connected with the exterior SPI interface storage by the standard SPI protocol interface; the input end I of the two-way multiplexer is connected with the CPU while the output end thereof is connected with a RAM; and the self-starting serial boot program loading module comprises a self-starting loading circuit, a work mode switch circuit and an SPI major mode circuit. After being electrified, the self-starting serial boot program loading module directly reads an algorithm routine in the exterior storage and rapidly loads in the inner program storage. The program loading method is simple, the system starting time is short and the loading and reading operations can be performed for many times.

Description

technical field [0001] The invention relates to the field of program loading systems, in particular to a self-starting serial boot program loading and reading system based on a system-level chip and a method thereof. Background technique [0002] At present, the program loading and reading system based on the system-level chip (SOC chip or DSP chip, etc.) has a structure such as figure 1 As shown, it includes SOC chip or DSP chip and external memory for storing algorithm programs, such as SPI-EEPROM (high-speed synchronous serial port-electrically erasable programmable read-only memory) and so on. Wherein, SOC or DSP chip comprises CPU, program loading module and internal program memory (RAM) of the chip, and this program loading module is made up of external interface and a ROM of carrying initialization boot program, described RAM, external interface, carrying initializing guiding The ROM of the program is respectively connected to the signal of the CPU, and the external ...

AI Technical Summary

Problems solved by technology

[0003] The problem with the program loading method of the above-mentioned program loading system is: after each system is powered on, the CPU takes a while to start the initialization boot program and other complex initialization configurations.

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