JPH09198363A - Connection system for micro processor system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the processing capacity and data transfer capacity of element processors, to reduce the number of connection switches and to reduce the transmission delay of a data transfer route. SOLUTION: The element processors PE1-PE4 are provided with data input circuits IC1-IC4 and data output circuits OC1-OC4, which are mutually independent and which can simultaneously operate. In the connection of the data input circuit IC1-IC4 and the data output circuits OC1-OC4, the data input circuit IC of one element processor PE and the data output circuit OC1-OC4 of the other three element processors PE are connected through switches SW12-SW43. For transferring data from the element processor PE1 to PE2, the switch SW 21 is turned on and data from the output circuit OC1 is received in the input circuit IC2. For transferring data from the element processor PE3 of PE1, the switch SW 13 is turned on and data from the output circuit OC3 is received in the input circuit IC1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coupling system of a microprocessor system in which a plurality of element processors operate while exchanging data with each other.

[0002]

2. Description of the Related Art As a conventional coupling system for a microprocessor system, a plurality of element processors PE each having a data input / output circuit IOC as shown in FIG. There is a crossbar coupling method. FIG. 3 shows an example in which four element processors PE1 to PE4 are used, and 16 switches SW11 to SW14 and SW21 are provided.
~ SW24, SW31 to SW34, SW41 to SW44
Are connected by

In this coupling system, the element processor PE
For data transfer from 1 to PE2, switch SW11
And SW21 are turned on and the data input / output circuits IOC1 and I
A connection line is formed between OC2 and the data input / output circuit I
The data input / output circuit IOC2 receives the data output by the OC1. While this transfer is being performed, the element processor PE3 can turn on the switches SW34 and SW44 to transfer data to the element processor PE4, but the data transfer to the element processor PE1 is the data transfer between the element processors PE1 and PE2. I have to wait until the end.

[0004]

Problem to be Solved by the Invention
In the case of a system, one element processor PE is usually
Although the input data is processed and output, the above-mentioned conventional crossbar coupling method has the following drawbacks.

(A) Since one element processor PE cannot input / output data at the same time, in order to perform one processing, data input, data processing, and data output must be performed in this order. It is difficult to increase the processing capacity of the system, and it is difficult to increase the processing capacity of the entire system due to waiting for data transfer.

(B) The coupling switch is the element processor P
The square of the number E is required, and the hardware scale becomes large. (C) Since two coupling switches are included in the data transfer path, the propagation delay is large.

The present invention has been made to solve the above problems, and can improve the processing capacity and data transfer capacity of element processors, reduce the number of coupling switches, and further reduce the propagation delay in the data transfer path. It is an object of the present invention to provide a coupling system of a microprocessor system which can be downsized.

[0008]

SUMMARY OF THE INVENTION The present invention is a microprocessor system in which a plurality of element processors operate while exchanging data with each other. A data input circuit and a data output circuit, and mutual data transfer means between the element processors, each of which is composed of a coupling switch for connecting the data input circuit of each one element processor and the data output circuit of the other one element processor. It is characterized by having.

According to the above configuration, each element processor can input the data to be processed next while outputting the processed data, so that the processing capacity of each element processor can be increased and the transfer waiting time can be increased. It can be eliminated and the data transfer capability can be improved. Also, the number of coupling switches is “square of the number of element processors PE−PE.
The number of switches can be reduced by the same number as the number of element processors as compared with the crossbar coupling method. Furthermore,
Since only one coupling switch is inserted in the data transfer path, the propagation delay can be reduced as compared with the crossbar coupling method.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a coupling system of a microprocessor system according to an embodiment of the present invention, and FIG. 2 is an enlarged view of each switch SW portion. In this embodiment, four element processors PE1,
There are PE2, PE3, PE4, and the respective element processors PE1 to PE4 are provided with data input circuits IC1, IC2, IC3, IC4 and data output circuits OC1, OC2, OC3, OC4 that are independent of each other and can operate simultaneously. .

Then, each of the data input circuits IC1 to IC4
And the data output circuits OC1 to OC4 are connected to each other by the data input circuit IC of one element processor PE and the data output circuits OC1, OC2 and OC of the other three element processors PE.
3, OC4 and switches SW12, SW13, SW1
4, SW21, SW23, SW24, SW31, SW3
2, SW34, SW41, SW42, and SW43 are connected. That is, the element processor PE1 switches the data input circuit IC1 to the switch SW1.
2, bus lines DB2, D via SW13, SW14
The data output circuit OC1 is connected to B3 and DB4 and the bus line DB1. The element processor PE2 is
The data input circuit IC2 is connected to the switches SW21, SW23,
The data output circuit OC2 is connected to the bus line DB2 via the SW24 and the bus lines DB1, DB3, DB4. The element processor PE3 connects the data input circuit IC3 to the bus lines DB1, DB2, DB4 via the switches SW31, SW32, SW34, and connects the data output circuit OC3 to the bus line DB3. The element processor PE4 connects the data input circuit IC4 to the bus line D via the switches SW41, SW42 and SW43.
Data output circuit OC4 connected to B1, DB2, DB3
Is connected to the bus line DB4.

Next, the operation of the above embodiment will be described. As an operation example, a case where data transfer from the element processors PE3 to PE1 is simultaneously performed during data transfer from the element processors PE1 to PE2 will be described. Element processor PE1
Data is transferred from PE to PE2 by turning on the switch SW21 to form a connection line between the data output circuit OC1 and the data input circuit IC2 and the data input circuit IC2 receiving the data output from the data output circuit OC1. Be done.

For data transfer from the element processor PE3 to the element processor PE1, the switch SW13 is turned on to form a connection line between the data output circuit OC3 and the data input circuit IC1 and the data output from the data output circuit OC3 is input as data. This is performed by the reception by the circuit IC1. Since the data input circuit IC1 and the data output circuit OC1 are independent and can operate simultaneously, data transfer from the element processors PE1 to PE2 and data transfer from the element processors PE3 to PE1 can be performed simultaneously. In this example, although the element processor PE1 is an element processor PE having a different transfer destination and transmission source, even if the transfer destination and the transfer source are the same element processor PE, transmission / reception can be performed at the same time.

Therefore, when each element processor PE performs an operation of processing and outputting the input data, it is possible to input the data to be processed next while outputting the processed data. Therefore, each element processor P
The processing capacity of E can be increased, the transfer waiting time can be eliminated, and the data transfer capacity can be increased.

Further, according to the configuration of the present invention, the number of switches is "the square of the number of element processors PE-the number of PEs", and the number of switches can be changed by the crossbar coupling method.
It can be reduced by the number of pieces. Further, since only one switch SW is included in the data transfer path, the propagation delay can be reduced as compared with the crossbar coupling method.

[0016]

As described above in detail, according to the present invention, each element processor is provided with a data input circuit and a data output circuit that can operate independently of each other and at the same time. Since the data output circuit of one element processor is connected by a switch, the processing capacity and the data transfer capacity of the element processor can be improved, the number of coupling switches can be reduced, and the propagation delay in the data transfer path can be reduced. Can be made smaller.

[Brief description of drawings]

FIG. 1 is a block diagram showing a combination method of a microprocessor system according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a coupling switch according to the same embodiment.

FIG. 3 is a block diagram of a crossbar coupling system of a conventional microprocessor system.

[Explanation of symbols]

 PE1 to PE4 element processors IC1 to IC4 data input circuits OC1 to OC4 data output circuits SW11 to SW44 coupling switches DB1 to DB4 bus lines

Claims (1)

[Claims] 1. In a microprocessor system in which a plurality of element processors operate while exchanging data with each other, a data input circuit and a data output circuit provided in each of the element processors and capable of operating independently of each other at the same time. And a mutual data transfer means between the element processors, which comprises a coupling switch for connecting the data input circuit of each one element processor and the data output circuit of the other one element processor. Coupling method of processor systems.