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Bus control device, arbitration device, integrated circuit device, bus control method, and arbitration method

A bus control and integrated circuit technology, applied in the field of bus system, can solve the problems of not being able to meet the transmission bandwidth of stable moving image data, increasing sound jumps and video disturbances, etc.

Inactive Publication Date: 2006-05-10
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This may result in an inability to meet the data transmission bandwidth required to stabilize moving images, and increase the possibility of sound jumps and video disturbances, etc.

Method used

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  • Bus control device, arbitration device, integrated circuit device, bus control method, and arbitration method
  • Bus control device, arbitration device, integrated circuit device, bus control method, and arbitration method
  • Bus control device, arbitration device, integrated circuit device, bus control method, and arbitration method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0075] structure

[0076] figure 1 Shown is the structure of a bus system 1 including a bus control device according to the first embodiment.

[0077] The bus system 1 includes a first bus and a second bus connected via a bridge unit 21, a first device 91 and a third device 93 connected to the first bus, a second device 92 and a fourth device connected to the second bus The device 94, the first arbitration unit 11 for arbitrating the right to use the first bus, and the second arbitration unit 12 for arbitrating the right to use the second bus.

[0078] The first arbitration unit 11, the second arbitration unit 12 and the bridge unit 21 are realized by integrated circuits.

[0079] The bus control device is composed of a first arbitration unit 11 and a second arbitration unit 12 .

[0080] The first arbitration unit 11 has a bandwidth information acquisition unit 111 , an arbitration period setting unit (arbitration period setting unit) 112 and a bandwidth information notifi...

no. 2 approach

[0206] structure

[0207] Figure 23 Shown is the structure of a bus system 2 including a bus control device related to the second embodiment.

[0208] The bus system 2 includes a first bus and a second bus connected via the first bridge unit 21, a third bus connected to the second bus via the second bridge unit 22, a first device 91 and a second bus connected to the first bus. Three devices 93, the fourth device 94 connected to the second bus, the second device 92 and the fifth device 95 connected to the third bus, the first arbitration unit 11 for arbitrating the right to use the first bus, arbitrating the use of the second bus The second arbitration unit 14 for arbitrating the right to use the third bus, and the third arbitration unit 15 for arbitrating the right to use the third bus.

[0209] The first arbitration unit 11 , the second arbitration unit 14 , the third arbitration unit 15 , the first bridge unit 21 and the second bridge unit 22 are implemented by integrated...

no. 3 approach

[0237] structure

[0238] Figure 28 Shown is the structure of a bus system 3 including a bus control device related to the third embodiment.

[0239] The bus system 3 includes a first bus and a third bus connected via the first bridge unit 21, a second bus connected to the third bus via the second bridge unit 22, and a first device 91 and a third bus connected to the first bus. Four devices 94, the second device 92 and the fifth device 95 connected to the second bus, the third device 93 and the sixth device 96 connected to the third bus, the first arbitration unit 11 for arbitrating the right to use the first bus, A second arbitration unit 16 for arbitrating the right to use the second bus, and a third arbitration unit 17 for arbitrating the right to use the third bus.

[0240] The first arbitration unit 11 , the second arbitration unit 16 , the third arbitration unit 17 , the first bridge unit 21 and the second bridge unit 22 are implemented by integrated circuits.

[024...

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Abstract

The present invention relates to a bus control device capable of ensuring data transmission bandwidth based on simple settings. The first arbitration unit (11) acquires bandwidth information indicating that data transmission of a data amount D is requested between the first device (91) and the second device (92) at each time S1. The first arbitration unit (11) sets the right to use the first bus to the first device (91) for a period of time that can satisfy the transmission data amount D in the time S1, and notifies the second arbitration unit (12) of the bandwidth information ). Based on the notified bandwidth information, the second arbitration unit (12) sets the right to use the second bus to the bridge unit (21) for a period of time suitable for transmitting the amount of data D within the time S2, and the time S2 is less than or equal to Time S1. The first arbitration unit (11) and the second arbitration unit (12) arbitrate the right to use the first bus and the second bus according to their respective settings.

Description

[0001] This application is based on Patent Application No. 2004-318494 filed in Japan, the contents of which are incorporated herein by reference. technical field [0002] The present invention relates to a bus system having a plurality of buses connected via a bus bridge, and more particularly to controlling the transmission of data between the buses. Background technique [0003] In a computer, devices such as a CPU and a memory are connected via a common signal path called a bus. From a safety and electronic load point of view, the number of devices that can be connected to one bus is limited. Therefore, most computers are usually configured with a bus system that uses multiple buses and bus bridges that connect to the buses and act as bridges for data transfer between the buses. [0004] Execution of application programs in personal computers and personal computers configured with the bus system as described above, the application programs include programs for recording...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/36G06F13/38
CPCG06F13/1605G06F13/4031
Inventor 平山笃史川口谦一河合秀树
Owner PANASONIC CORP
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