PCIe Devices - PLX Technology
PCIe Devices - PLX Technology
PCIe Devices - PLX Technology
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Logical Sub-Block Services<br />
n<br />
The Physical Layer Logical sub-block performs the<br />
following<br />
l Symbol encoding/decoding<br />
– Per ANSI X3.230-1994, clause 11, and IEEE 802.3z,<br />
36.2.4<br />
• Encoding allows for 12 special symbols used for framing and Link<br />
management<br />
• Used for Link Transmitting<br />
– Adding framing symbols to symbol encoded packet, feeding packet<br />
byte stream to the appropriate Physical Layer Lane<br />
• Used for Receiving<br />
– Receiving serial byte stream from device’s receive port, stripping<br />
framing symbols, decoding received packet, and passing packet to<br />
the Data Link Layer<br />
l<br />
Link initialization, training, and status state rules<br />
l<br />
Link error recovery<br />
Copyright by Dashcourses, Inc. 2009<br />
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