Microprocessor system bus and microprocessor interface bus converting device and method

Abstract

The invention discloses a microprocessor system bus and MPI bus conversion device and method, which realize the data communication between the microprocessor system bus and peripheral device MPI bus. In the device, a control signal processing module is used to receive control signals sent by the control bus, when the read operation signal or write operation signal in the control signal is effective, the chip select signal on the MPI bus is made to be effective; a read-write operation module is used to receive and store the first paralleling data transmitted by the data bus when the write operation signal is effective, and to transmit the stored second paralleling data onto the data bus when the read operation signal is effective; a paralleling and serial data conversion module is used to transmit the first paralleling data bit-by-bit in sequence onto the MPI bus when the write operation signal is effective, and to receive a set of serial data with the same bit of the data bus from the MPI bus and stores in the read-write operation module bit-by-bit in sequence to form a second paralleling data when the read operation signal is effective.

Description

technical field [0001] The invention relates to the field of integrated circuits, in particular to a conversion technology between a microprocessor system bus and a microprocessor interface bus. Background technique [0002] With the rapid development of large-scale integrated circuit technology, large-scale integrated circuit devices with central processing unit (Central Processing Unit, CPU) functions are collectively referred to as microprocessors (Micro-Processor). According to the application field, microprocessors can be roughly divided into three categories: general-purpose high-performance microprocessors, embedded microprocessors and digital signal processors, and microcontrollers. [0003] The bus refers to the information transmission line shared by multiple functional devices. It can be divided into parallel bus and serial bus according to the number of bits that can transmit information at the same time. The parallel bus can transmit multiple bits of informati...

AI Technical Summary

Problems solved by technology

Since most microprocessors do not have an MPI bus, this method greatly limits the choice of microprocessors

Therefore, how to communicate data between a microprocessor without an MPI bus and an MPI bus of a peripheral device becomes an urgent problem to be solved.

Images