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PCIX bus operating mode and arbitration decision test card

A technology of operation mode and test card, which is applied in the direction of error detection/correction, instrumentation, electrical digital data processing, etc., can solve problems such as troublesome, inconvenient arbitration judgment, etc., and achieve the effect of reducing signal attenuation

Inactive Publication Date: 2006-05-17
HUANDA COMPUTER (SHANGHAI) CO LTD
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  • Summary
  • Abstract
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Problems solved by technology

At the same time, according to the existing technology, it is very inconvenient to make an arbitration judgment in PCIX mode. An additional oscilloscope must be used to make a judgment by sampling the signals on the PCIX bus through the oscilloscope. Usually, this kind of judgment needs to occupy the oscilloscope channel for arbitration. It is too troublesome to judge and need to use additional devices at the same time.

Method used

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  • PCIX bus operating mode and arbitration decision test card
  • PCIX bus operating mode and arbitration decision test card
  • PCIX bus operating mode and arbitration decision test card

Examples

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Embodiment Construction

[0020] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] refer to figure 1 , figure 1 Illustrated are the mode of operation of the PCIX bus of the present invention and the arbitration decision test card 100, this test card is connected to the PCIX bus, can gather the bus signal on the PCIX bus, these signals comprise FRAME, IRDY, TRDY, DEVSEL, STOP, RST, PCICLK, GNT0, GNT1, GNT2, GNT3.

[0022] The basic idea of ​​the arbitration judgment in the present invention is to sample multiple groups of signals on the bus at different times, and then combine the signals of these groups together for judgment, so as to realize the arbitration judgment. Specifically include these devices:

[0023] A clock separation device 104 separates the bus clock signal from the bus into several clock signals separated from each other and displays it. In this embodiment, it is displayed by a seco...

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Abstract

A test card consists of clock separation device for generating multiple clock signals being separated to each other, multiple signal sampling device for receiving separated clock signal and using it as locking signal as well as sampling signal on bus at leading edge of locking signal, and an arbitration and judgment device for receiving sampled signals and for carrying out arbitration and judgment according to these signals then displaying result. The card is connected to PCIX bus for collecting signal on bus so as to decide transmission end and to judge operation mode.

Description

technical field [0001] The invention relates to the detection technology of the PCIX bus, more specifically, relates to a PCIX bus operation mode and an arbitration judgment test card. Background technique [0002] With the popularization of the PCIX bus application at present, it becomes more and more important to detect the running condition of the PCIX bus. Usually, multiple devices are connected to the PCIX bus, so it is necessary to determine which device is currently occupying the PCIX bus. This kind of judgment is called an arbitration decision. At the same time, according to the existing technology, it is very inconvenient to make an arbitration judgment in PCIX mode. An additional oscilloscope must be used to make a judgment by sampling the signals on the PCIX bus through the oscilloscope. Usually, this kind of judgment needs to occupy the oscilloscope channel for arbitration. It is too troublesome to judge and need to use additional devices at the same time. [0...

Claims

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Application Information

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IPC IPC(8): G06F11/28G06F13/20
Inventor 郑丽樱
Owner HUANDA COMPUTER (SHANGHAI) CO LTD
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