Method for reading and writing on-line serial data of on-chip system

Abstract

The invention discloses a method for reading and writing on-line serial data of an on-chip system, and belongs to the technical field of integrated circuits. The method comprises the following steps of: generating an ISP (in-system programming) module by using a comprehensive hardware description language, and inserting the ISP module into the on-chip system with a program memory to implement read-write of the on-line serial data of the program memory. The ISP module comprises a controller module, a status register module, an SPI (serial peripheral interface) module, a data path module, a timer module, an address generator module and a control signal generator module. The controller module is connected with the SPI module, the status register module, the data path module, the timer module, the address generator module and the control signal generator module; the timer module is connected with the control signal generator module; and the control signal generator module is connected with the address generator module. The module in the method is clear to divide, simple to implement and high in reliability, is easily transplanted in different on-chip systems, is convenient to develop and debug the on-chip system, and shortens the development period of the on-chip system.

Description

technical field [0001] A method for reading and writing online serial data of a system on a chip belongs to the field of integrated circuit design. Background technique [0002] With the continuous maturity of ASIC design technology, more and more special-purpose chips will be produced in this field, and various SoCs will continue to appear, and program memory is one of the main modules constituting SoC. First, how to read and write data to the program memory has become one of the main issues that need to be considered in system-on-chip design. At present, there are three main methods for reading and writing program memory data: dedicated programmer data reading and writing, board-level data reading and writing, and online serial data reading and writing. [0003] The data read and write of the special programmer refers to leading the data read and write interface of the program memory to the IO pin of the system on chip, and then using the special programmer to generate th...

AI Technical Summary

Problems solved by technology

The chip supporting the serial data reading and writing method in this patent still needs to embed special analysis logic in the chip

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