Pci fast channel device, link energy management method and system

An energy management and link technology, applied in the field of communication, which can solve problems such as transmission data loss
CN102439916AActive Publication Date: 2012-05-02HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2012-05-02

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Abstract

The embodiment of the invention discloses a PCI fast channel device, a link energy management method and a system; wherein, a PCI fast channel link energy management method comprises the steps of using a first device to obtain the adjustment information for adjusting the current speed and / or bit width of a PCI fast channel link; making the first device stop transmitting data and eliminating a main device enabling bit of a configuration space command register of a second device at the opposite end of the link to make the second device stop transmitting data after the current data is sent; using the first device to adjust the current speed and / or bit width of the link according to the adjustment information; making the first device recover data transmission and positioning the main device enabling bit again to make the first device and the second device adjust the processed speed and / or bit width to send and receive data again. The embodiment of the invention can guarantee that the dynamic regulation of the PCI fast channel during the link energy management can be realized while the businesses of the link are not affected.
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Description

technical field

[0001] The invention relates to communication technology, in particular to a PCI fast channel device, a link energy management method and a system. Background technique

[0002] Peripheral Component Interconnect Express (PCI Express for short) provides a high-speed point-to-point serial communication link for PCI Express devices. PCI Express is used for multimedia, high-speed LAN and other data-intensive Applications that provide sufficient bandwidth also face energy management issues in the link.

[0003] The power consumption of the PCI fast lane link increases with the increase of the link bandwidth, and the link bandwidth is related to the transmission rate and bit width of the link. When the traffic flow in the link is small and high bandwidth is not required , the bandwidth of the link can be reduced by reducing the transmission rate or bit width of the link, thereby reducing the power consumption of the link. When the business traffic in the link incr...

Claims

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