PCI Express Base Specification, Revision 2.1 (source code)

= PCI Express Base Specification, Revision 2.1
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{title2=2009}

https://www.intel.com/content/dam/support/us/en/programmable/support-resources/fpga-wiki/asset03/pci-express-base-r2.1.pdf

Section 1.3, figure 1-2