PCIe学习笔记(33)--- PL

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Link capability register:

Max link speed (supported link speeds vector field bit x)

max link width (x1 ... x32)


link capability 2 register:

supportd link speeds vecotr


link status register:

current link speed

negotiated link width

link training


link control register:

link disable

retrain linnk

extended synch (?, forces the transmission of 4096 FTSs, 1024 TS1s)


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