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Pre-arbitration device using bus and its method

An arbitration method and bus technology, applied in the field of pre-arbitration, can solve problems such as complex circuit structure and complex node connection

Inactive Publication Date: 2002-06-26
ERICSSON-LG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the master node needs to be able to display the addresses of all nodes, if the number of nodes increases, the connection of nodes becomes complicated, and the circuit structure for bus usage right arbitration becomes complicated

Method used

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  • Pre-arbitration device using bus and its method
  • Pre-arbitration device using bus and its method
  • Pre-arbitration device using bus and its method

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0045] Preferred embodiments of the present invention will be described in detail below with reference to examples shown in the accompanying drawings.

[0046] Referring to the accompanying drawings, the pre-arbitration device using the bus and its method will be described below.

[0047] image 3 is a simplified diagram of the global bus system, showing the method of arbitration using the bus in the global bus according to the present invention. like image 3 As shown, there are n nodes (master node, slave node, . . . ), including a master node 301 with an arbitration unit (algorithm and / or arbitration logic circuit) and slave nodes 302 to 305. In order to arbitrate bus usage by n nodes 301 to 304, at least two or more bus assertions, frame synchronization, and assertion clocks for bus assertion are used.

[0048] exist image 3 In the actual bus arbitration, the bus grant (BG) signal from the arbitration unit (in the master node) in response to the bus assertion request ...

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PUM

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Abstract

The present invention discloses a bus use right pre-arbitration method and apparatus. When one 1 of the counters( 1~m-1 ) recieves a bus use right request of node j, and at the same time, node i controls the bus and transmits and receives data, the counting value of the counter 1 is temporarily suspended, and node j waits until node i stops controlling the bus (a reservation of user right of a bus of node j is made). If the node i stops controlling the bus, the counter 0 of the node i restarts counting and the bus arbitration unit permits the reserved node j to use the bus. The node j controls the bus to transmit and receive data. The countor performs operating at each node directly and starts to count at a special node and is used to determine if the node requests a bus use right.

Description

field of invention [0001] The present invention relates to a device and a method for arbitrating the right to use a bus requested by a node in a global bus system having at least two or more nodes (such as processors or terminals). In particular, the present invention relates to pre-arbitration of bus usage rights in a global bus capable of pre-arbitration. Background technique [0002] Generally, in a bus system with at least two or more nodes (such as processors or terminals), in order to arbitrate the node's bus assertion (bus assert), some technologies with a global bus system have been disclosed, and the global bus system uses A round robin method or packet bus structure capable of pre-arbitration. [0003] Figure 1 shows a schematic diagram of a global bus system for an arbitrated bus on a conventional round robin basis. [0004] This method for arbitrating bus usage rights by round robin assigns a specific time period to each processor (node) that performs multiproc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/40G06F13/374H04J3/02H04L12/56H04L29/06
CPCG06F9/50G06F13/374H04L12/40
Inventor 朴禧哲
Owner ERICSSON-LG