Data feedback method, buffer, controller and system

Abstract

Embodiments of the invention disclose a data feedback method, a buffer, a controller and a system, and aim to solve the problems that the whole chip area of a system on chip is enlarged and the integration level of the system on chip is reduced because a large amount of Code RAMs need to be designed for storing codes, resident in a memory, of different running scenes in system-on-chip design in the prior art. The method comprises the steps that the buffer judges whether a first data address corresponding to a first read command exists in an address mapping relationship or not after the first read command sent by a processor through the controller is received; the buffer determines a second data address corresponding to the first data address according to the address mapping relationship after determining that the first data address corresponding to the first read command exists in the address mapping relationship; and the buffer feeds back data as data required to be acquired by the processor to the processor when determining that the data corresponding to the second data address is in the buffer. By adopting the method provided by the invention, the integration level of the system on chip can be improved.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a data feedback method, buffer, controller and system. Background technique [0002] The system on chip refers to the integration of a complete system on a single chip. The complete system generally includes: processor, memory, and peripheral circuits. Generally, software codes and the like of the system on chip are stored in an external memory. Such as figure 1 As shown, the schematic diagram of the structure of the system on a chip, from figure 1 As can be seen from the above, the system on a chip includes: Bus Bridge (bus bridge), CPU (Central Processing Unit, central processing unit), Memory Controller (storage controller), ROM (Read Only Memory, read-only memory), Data RAM (RAM, Random Access Memory, random access memory; data random access memory), Code RAM (code random access memory), SPI Controller (Serial Peripheral Interface, serial peripheral interface; serial per...

AI Technical Summary

Problems solved by technology

[0004] To sum up, in the current system-on-chip design, a large amount of Code RAM needs to be designed to store codes that reside in memory in different operating scenarios, which increases the overall chip area of ​​the system-on-chip and reduces the integration of the system-on-chip

Images