PCI Express Specifications and ECRs for Review
PCI-SIG members can influence PCI technology development by submitting engineering change requests (ECRs) as well as reviewing and commenting on draft specifications, ECRs and engineering change notices (ECNs). Members should check the Review Zone regularly for new postings.

Specifications and ECRs currently under review are listed below. PLEASE NOTE: THESE ARE DRAFT SPECIFICATIONS ONLY AND, AS SUCH, ARE SUBJECT TO FURTHER REVISION AND REVIEW WITHOUT NOTICE. THESE DRAFT SPECIFICATIONS ARE PROVIDED TO YOU FOR REVIEW PURPOSES ONLY AND SHOULD NOT BE RELIED UPON FOR DESIGN OR MANUFACTURING PURPOSES. For a list of documents with completed review cycles, visit the PCI Express Review Archive. 

Additional information on the ECR/ECN process can be found in the Procedures Center.

Documents for Review
Please submit review feedback on all documents below to administration@pcisig.com by the designated review period deadline. All documents for review can be accessed HERE.​​

PCI Express Base Specification Revision 7.0 Version 0.9

• Review period closes on Monday, May 19, 2025
   

LTR Enhancements for MFD ECN

• Review period closes on Monday, May 19, 2025
   

REFCLK and AC Coupling for CopprLink External Limit

• Review period closes on Monday, June 2, 2025
   

IDE_KM GETKEY and AEAD Limit

• Review period closes on Monday, June 9, 2025
   

_DSM Function Revision Simplification

• Review period closes on Monday, June 16, 2025
   

update_Error_Reporting_DSM_function_number

• Review period closes on Monday, June 16, 2025
   

Add M.2 1.2V I/Os for WWAN. Remove HSIC, SSIC, M-PCIe.

• Review period closes on Monday, June 20, 2025

ACCESS ALL DOCUMENTS FOR REVIEW HERE