Internet security and acceleration (ISA) interface internet protocol (IP) core based on processor local bus (PLB)

Abstract

The invention relates to an internet security and acceleration (ISA) interface internet protocol (IP) core based on a processor local bus (PLB), and the ISA interface IP core is characterized by comprising a decoder, a double-port random access memory (RAM), a register array, a read-write state machine and a user logic module; the decoder is connected with the user logic module through a control wire, and the decoder is connected with the double-port RAM and the register array through an address line; the input end of the read-write state machine is connected with an ISA bus, and the output end of the read-write state machine is connected with the double-port RAM; one end of the register array is connected with the ISA bus, the other end of the double-port RAM and the other end of the register array are respectively connected with the user logic module through a two-directional data line, the other end of the user logic module is connected with the PLB, the ISA bus is connected with a principal computer control unit, and the PLB bus is connected with a central processing unit (CPU). The ISA bus is connected with the principal computer control unit, and the PLB bus is connected with the CPU, so that a data interaction function is realized, and the ISA interface IP core has characteristics of simpleness in control logic, high reliability, rapid speed, strong compatibility, easiness in expansion and the like.

Description

technical field [0001] The invention belongs to the field of mobile robots, in particular to an ISA interface IP core based on a PLB bus. Background technique [0002] In the field of mobile robots, PC104 is usually used to control motors or sensors. Due to the design characteristics of PC104 itself, it cannot directly control the motor. Therefore, the information exchange between PC104 and the motor requires an intermediate link, which is the interface board. At present, the microcontroller (MCU) module is usually used as the interface board, that is, the control method of PC104+microcontroller+motor (or sensor), the problems of this control method are: 1. The programming language of MCU is mainly C language , implemented by soft logic, it implements specific functions by sequentially executing instructions, which cannot avoid the disadvantage of low speed; 2. The feature that MCU can only process one instruction at a time also affects its application, and it can only be u...

AI Technical Summary

Problems solved by technology

At present, the microcontroller (MCU) module is usually used as the interface board, namely: PC104 + microcontroller + motor (or sensor) control mode, the problems of this control mode are: 1. The programming language of MCU is mainly C language , implemented with soft logic, which realizes specific functions by sequentially executing instructions, which cannot avoid the disadvantage of low speed; 2. The fact that MCU can only process one instruction at the same time also affects its application, and it can only be used for some algorithms design and simple controls

To sum up, it is very difficult to implement the control method of PC104+microcontroller+motor (or sensor) in terms of complex logic control, parallel high speed, interface board reusability and upgradeability

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