PCIe Devices - PLX Technology
PCIe Devices - PLX Technology
PCIe Devices - PLX Technology
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n<br />
n<br />
Data Link Layer Services<br />
<strong>PCIe</strong> defines the following DLLP types relating to Link<br />
services<br />
l<br />
l<br />
l<br />
l<br />
Ack/Nak of DLLPs received from the Physical Layer<br />
Initialization and Flow Control Update<br />
Power Management (PM)<br />
Vendor Specific<br />
Services provided to Transaction Layer<br />
l<br />
l<br />
Receive TLP from Transaction Layer<br />
– Pre-pending a sequence number to the TLP<br />
– Calculating and adding a 32 bit Link CRC (LCRC) to<br />
the TLP<br />
• Sending to Physical Layer<br />
Validates received packets sent to Transaction Layer<br />
– Ack/Nak as appropriate<br />
– Error log/generation as appropriate<br />
Copyright by Dashcourses, Inc. 2009<br />
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