Method and device for controlling impact external-equipment interconnected bus interface board circuit
A technology of external equipment and bus interface, which is applied in the field of communication, can solve problems such as wear of pins, increase of contact resistance, adverse effects on signal quality, etc., and achieve the effect of convenient maintenance
Inactive Publication Date: 2009-06-24
HUAWEI TECH CO LTD
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Problems solved by technology
However, because the CompactPCI bus connector used by the interface board has a limit on the number of times of insertion and extraction, the plating layer of the pin will be worn after multiple insertions and extractions, causing an increase in contact resistance, which will adversely affect the signal quality; and, insertion and extraction The interface board will also bring inconvenience to system maintenance
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[0022] In view of the failure of the hot-swappable controller in the prior art, which causes the interface board to be powered off abnormally, and the wear and tear of the interface board due to power-on and plug-in of the interface board, and the inconvenience in maintenance, the embodiment of the present invention provides a A method and device for circuit control of a compact external device interconnection bus interface board.
[0023] like figure 2 as shown, figure 2 It is a schematic flowchart of a compact external device interconnection bus interface board circuit control method according to an embodiment of the present invention;
[0024] Step 101: After the interface board has just been inserted into the slot and powered on, before being pulled out, the interface board is only controlled by the wrench signal;
[0025] For example, set the state machine controlled by the circuit on the CompactPCI interface board, and set the state of the state machine in the three ...
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The invention relates to the field of communication, in particular to a method and device for circuit control of a compact external device interconnection bus interface board. According to the method and device for controlling the circuit of a compact external device interconnection bus interface board provided by the embodiment of the present invention, after the interface board is inserted into the slot and powered on, before it is pulled out, the interface board is set to be controlled only by Wrench signal control, and when the interface board receives the wrench signal, control the power-off or power-on of the interface board, avoiding the abnormal power-off situation of the CompactPCI interface board due to the abnormality of the hot-swap controller, and The power on and off of the interface board can be controlled by opening and closing the wrench, and the maintenance of the interface board is facilitated.
Description
technical field [0001] The invention relates to the field of communication, in particular to a method and device for circuit control of a compact external device interconnection bus interface board. Background technique [0002] Peripheral Component Interconnect (PCI, Peripheral Component Interconnect) bus has been widely used due to its plug-and-play, processor-independent, good scalability and other advantages. The Compact Peripheral Component Interconnect (CompactPCI, Compact Peripheral Component Interconnect) specification released by the PCI Industrial Computer Manufacturers Association (PICMG, PCI Industrial Computer Manufacturers Group) in 1994 marks the beginning of the PCI bus being used in telecommunications that require high reliability. , Industrial control and other fields. [0003] The CompactPCI specification defines a new board and system structure, adopts the mechanical size of the European card, the electrical characteristics and data transmission protocol...
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IPC IPC(8): G06F13/40
Inventor 李延松杨辉刘华伟
Owner HUAWEI TECH CO LTD