PCI Express®: Performance Scalability for the Next Decade

	Download the Specifications (Members only) PCIe Base Spec 2.1 PCIe CEM Spec 2.0 PCIe Base Spec 1.1  PCIe CEM Spec 1.1 PCIe External Cabling Spec 1.0 PCIe Mini CEM Spec 1.2    PCIe ExpressModule Electromechanical Spec 1.0 PCIe x16 Graphics 150W-ATX Spec 1.0 PCI Express Label Spec and Usage Guidelines NEW PCIe to PCI/PCI-X Bridge Spec 1.0 PCIe Mobile Graphics Low-Power Addenum 1.0

PCI Express Specifications

PCI-SIG Members are entitled to review draft specifications and participate in the ECR/ECN process. PCI-SIG members may also download PCI Express specifications for free (see adjacent table), or purchase paper copies of PCI Express specifications at a lower cost.

Non-members who are interested in reviewing copies of the PCI Express specifications may submit a specification order form.

PCI Express 2.0

Protocol & Software

• PCIe Device Labeling under Operating Systems ECN (126k PDF)
• Protocol Multiplexing ECN (299k PDF)
• End-End TLP Prefix Changes for RCs ECN (72k PDF)
• ACPI Additions for ASPM, OBFF, LTR ECN (78k PDF)
• Optimized Buffer Flush/Fill ECN (276k PDF)
• Update DMTF SM CLP Specification References ECN (90k PDF)
• UEFI PCI Services Update ECN (163k PDF)
• ASPM Optionality ECN (127k PDF)
• TLP Prefix ECN (230k PDF) 
• TLP Processing HInts ECN (146k PDF)
• Extended Tag Enable Default ECN (64k PDF)
• Latency Tolerance Reporting ECN (149k PDF)
• ID-Based Ordering ECN (171k PDF)
• Dynamic Power Allocation ECN (90k PDF)
• Multicast ECN (212k PDF)
• Internal Error Reporting ECN (207k PDF)
• Atomic Operations ECN (195k PDF)
• Resizable BAR ECN (154k PDF)
• Alternative Routing-ID Interpretation ECN (249k PDF) 

Electromechanical

• CEM Support Power ECN (37k PDF)
• UICC Inter-Chip USB Interface ECN (79k PDF)
• Display-Mini Card (DMC) Definition ECN (666k PDF)
• Mini-Card PCIe 2.0 Update ECN (188k PDF)
• Optimized Buffer Flush/Fill ECN (276k PDF)
• System Board Eye Height ECN (27k PDF) 

Test Specifications

• PCI Express Architecture Configuration Space Test Specification 2.0a (398k PDF) - without change bar
• PCI Express Architecture Configuration Space Test Specification 2.0a (401k PDF) - with change bar
  
   
• PCI Express Architecture PHY Test Specification 2.0 (121k PDF)
• PCI Express Architecture Configuration Space Test Specification 2.0 (345k PDF)
• PCI Express Architecture Link Layer Test Specification 2.0 (308k PDF)
• PCI Express Architecture Transaction Layer Test Specification 2.0 (168k PDF)

PCI Express 1.1

Electromechanical

• Input Power and Voltage Tolerance ECN (189k PDF)
• Mini-WFF Alignment Changes ECN (267k PDF)
• Slot Short Wiring ECN (112k PDF)
• Thermal ECN (300k PDF)
• Host Socket Recommendations ECN (4.31MB PDF
• Half Mini CEM ECN (2.23MB PDF)

Protocol & Software

• Alternative Routing-ID Interpretation ECN (249k PDF) 
• Link Bandwidth Notification ECN (74k PDF)
   
• Access Control Services ECN (170k PDF)
   
• Completion Timeout Control Capability ECN (210k PDF)
   
• PCI Express Capability Structure Expansion ECN (38k PDF)
   
• Trusted Configuration Space for PCI Express ECN (782k PDF)
• Function Level Reset (FLR) ECN (162k PDF)
• Power Limit Re-definition ECN (85k PDF)
   

Errata

• PCI Express Base Specification 1.1 Errata (268k PDF)
  
  

  View the PCI Express 1.0a Specification and ECN archive.