PCIe Devices - PLX Technology
PCIe Devices - PLX Technology
PCIe Devices - PLX Technology
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Data Link Layer Control<br />
n<br />
The Data Link Layer may be in any of three states<br />
and provides two status indicator outputs<br />
l Data Link Layer states<br />
– DL_Inactive<br />
• Link is non-operational or nothing is happening<br />
– DL_Init<br />
• Link is operational<br />
• Flow control initialized for default VC (VC0)<br />
– DL_Active<br />
• Normal operational mode<br />
l Data Link Layer status outputs<br />
– DL_Down<br />
• Link is not communicating with component at the other end<br />
– DL_Up<br />
• Communications established with component at the other end<br />
Copyright by Dashcourses, Inc. 2009<br />
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