Specifications

Technology: PCI Express
Specification Title Spec Rev Document Type Release Date
Cin Maximum Increase ECN
Smaller lithography has led to smaller pad sizes whi...view more Smaller lithography has led to smaller pad sizes which has increased parasitics on inputs. For the Card Electromechanical Specification, this ECR increases Cin, the maximum input pin capacitance on 3.3 V logic signals (applies to PERST# and PWRBRK#) from 7 pF to 20 pF (see CEM Table 3). For the M.2 specification, this ECR increases M.2 CIN, the maximum input pin capacitance for both 3.3 V logic signal (applies to PERST#, see M.2 Table 4-1) and 1.8 V logic signals (applies to PERST# and PEWAKE# (when used for OBFF signaling), see M.2 Table 4-2) from 10 pF to 20 pF. This capacitance increase is large enough for known upcoming lithographies. It had not been clear what the measurement point was for CIN in CEM or M.2 specifications. This 18 ECN extends the COUT measurement point specified in M.2 to apply to CIN and COUT for both 19 CEM and M.2 specifications. show less
4.x ECN
PCI Express External Cabling Specification Revision 3.0a (Change Bar)
This is a companion specification to the PCI Express...view more This is a companion specification to the PCI Express Base Specification. The primary focus of this specification is the implementation of cabled PCI Express®. No assumptions are made regarding the implementation of PCI Express-compliant Subsystems on either side of the cabled Link (PCI Express Card Electromechanical (CEM), ExpressCard™, ExpressModule™, PXI Express™, or any other form factor). Such form factors are covered in separate specifications show less
4.x Specification
PCI Express External Cabling Specification Revision 3.0a (Clean)
This is a companion specification to the PCI Express...view more This is a companion specification to the PCI Express Base Specification. The primary focus of this specification is the implementation of cabled PCI Express®. No assumptions are made regarding the implementation of PCI Express-compliant Subsystems on either side of the cabled Link (PCI Express Card Electromechanical (CEM), ExpressCard™, ExpressModule™, PXI Express™, or any other form factor). Such form factors are covered in separate specifications show less
3.x Specification
PCI Express Architecture PHY Test Specification Revision 4.0, Version 1.01 (Change Bar)
This document provides test descriptions for PCI Exp...view more This document provides test descriptions for PCI Express electrical testing. It is relevant for anyone building Add-in Cards or system boards to the PCI Express Card Electromechanical Specification 4.0. This specification does not describe the full set of PCI Express tests and assertions for these devices. show less
4.x Specification
PCI Express Architecture PHY Test Specification Revision 4.0, Version 1.01 (Clean)
This document provides test descriptions for PCI Exp...view more This document provides test descriptions for PCI Express electrical testing. It is relevant for anyone building Add-in Cards or system boards to the PCI Express Card Electromechanical Specification 4.0. This specification does not describe the full set of PCI Express tests and assertions for these devices. show less
4.x Specification
PCI Express External Cabling Specification Revision 3.0, Version 1.0
This is a companion specification to the PCI Exp...view more This is a companion specification to the PCI Express Base Specification. The primary focus of this specification is the implementation of cabled PCI Express®. No assumptions are made regarding the implementation of PCI Express-compliant Subsystems on either side of the cabled Link (PCI Express Card Electromechanical (CEM), ExpressCard™, ExpressModule™, PXI Express™, or any other form factor). Such form factors are covered in separate specifications. show less
3.x Specification
PCI Express Card Electromechanical Specification Revision 4.0, Version 1.0 (Clean)
This specification is a companion for the PCI Expres...view more This specification is a companion for the PCI Express® Base Specification, Revision 4.0. Its primary focus is the implementation of an evolutionary strategy with the current PCI™ desktop/server mechanical and electrical specifications. show less
4.x Specification
PCI Express Card Electromechanical Specification Revision 4.0, Version 1.0 (Change Bar)
This specification is a companion for the PCI Expres...view more This specification is a companion for the PCI Express® Base Specification, Revision 4.0. Its primary focus is the implementation of an evolutionary strategy with the current PCI™ desktop/server mechanical and electrical specifications. show less
4.x Specification
PCI Express Architecture PHY Test Specification Revision 4.0, Version 1.0
This document provides test descriptions for PCI Exp...view more This document provides test descriptions for PCI Express electrical testing. It is relevant for anyone building Add-in Cards or system boards to the PCI Express Card Electromechanical Specification 4.0. This specification does not describe the full set of PCI Express tests and assertions for these devices. show less
4.x Specification
OCuLink Skew
A PCI Express Receiver is required to tolerate 6 ns ...view more A PCI Express Receiver is required to tolerate 6 ns of lane to lane skew when operating at 8.0 GT/s. The PCI Express OCuLink Specification allowed the cable assembly to consume the entire budget. The Transmitter and traces routing to the OCuLink connector need some of this budget. The PCI Express Card Electromechanical Specification Revision 3.0 assigns 1.6 ns to the total interconnect lane to lane skew budget. show less
1.x ECN
PCI Express® Mini Card Electromechanical Specification Revision 2.1
This specification defines an implementation for sma...view more This specification defines an implementation for small form factor PCI Express cards. The specification uses a qualified subset of the same signal protocol, electrical definitions, and configuration definitions as the PCI Express Base Specification, Revision 2.0. Where this specification 5 does not explicitly define PCI Express characteristics, the PCI Express Base Specification governs. show less
2.x Specification
PCI Express® Mini Card Electromechanical Specification Revision 2.1 with Change Bar
This specification defines an implementation for sma...view more This specification defines an implementation for small form factor PCI Express cards. The specification uses a qualified subset of the same signal protocol, electrical definitions, and configuration definitions as the PCI Express Base Specification, Revision 2.0. Where this specification 5 does not explicitly define PCI Express characteristics, the PCI Express Base Specification governs. show less
2.x Specification
Emergency Power Reduction Mechanism with PWRBRK Signal ECN
This ECN defines two sets of related changes to supp...view more This ECN defines two sets of related changes to support an Emergency Power Reduction mechanism and to provide software visibility for this mechanism: 1. The Card Electromechanical Specification is updated to define an optional Emergency Power Reduction mechanism using RSVD pin B30. 2. The PCI Express Base Specification is updated to define an optional mechanism to indicate support for Emergency Power Reduction and to provide visibility as to the power reduction status of a Device. show less
3.x ECN
PCI Express Card Electromechanical Specification Revision 3.0
This specification is a companion for the PCI Expres...view more This specification is a companion for the PCI Express Base Specification, Revision 3.0. Its primary focus is the implementation of an evolutionary strategy with the current PCI™ desktop/server mechanical and electrical specifications. Access Test Channel S-Parameters. show less
3.x Specification
PCI Express Architecture PHY Test Specification Revision 3.0
This document provides test descriptions for PCI Exp...view more This document provides test descriptions for PCI Express electrical testing. It is relevant for anyone building add-in cards or system boards to the PCI Express Card Electromechanical Specification 3.0. This specification does not describe the full set of PCI Express tests and assertions for these devices. show less
3.x Specification
PCI Express Architecture PHY Test Specification Revision 2.0
This document provides test descriptions for PCI Exp...view more This document provides test descriptions for PCI Express electrical testing. It is relevant for anyone building add-in cards or system boards to the PCI Express Card Electromechanical Specification, Revision 2.0. This specification does not describe the full set of PCI Express tests and assertions for these devices.  show less
2.x Specification
PCI Express External Cabling Specification Revision 2.0
This is a companion specification to the PCI Express...view more This is a companion specification to the PCI Express Base Specification. Its primary focus is the implementation of cabled PCI Express®. The discussions are confined to copper cabling and their connector requirements to meet the PCI Express signaling needs at 5.0 GT/s. No assumptions are made regarding the implementation of PCI Express compliant Subsystems on either side of the cabled Link; e.g., PCI Express Card Electromechanical (CEM), ExpressCard5 ™, ExpressModule™, PXI Express™, system board, or any other form factor. Such form factors are covered in other separate specifications. show less
2.x Specification
PCI Express External Cabling Specification Revision 2.0 with Change Bar
This is a companion specification to the PCI Express...view more This is a companion specification to the PCI Express Base Specification. Its primary focus is the implementation of cabled PCI Express®. The discussions are confined to copper cabling and their connector requirements to meet the PCI Express signaling needs at 5.0 GT/s. No assumptions are made regarding the implementation of PCI Express compliant Subsystems on either side of the cabled Link; e.g., PCI Express Card Electromechanical (CEM), ExpressCard5 ™, ExpressModule™, PXI Express™, system board, or any other form factor. Such form factors are covered in other separate specifications. show less
2.x Specification
PCI Express Mini Card Electromechanical Specification Revision 2.0 with Change Bar
This specification defines an implementation for sma...view more This specification defines an implementation for small form factor PCI Express cards. The specification uses a qualified sub-set of the same signal protocol, electrical definitions, and configuration definitions as the PCI Express Base Specification, Revision 2.0. Where this specification does not explicitly define PCI Express characteristics, the PCI Express Base Specification governs. show less
2.x Specification
PCI Express Mini Card Electromechanical Specification Revision 2.0
This specification defines an implementation for sma...view more This specification defines an implementation for small form factor PCI Express cards. The specification uses a qualified sub-set of the same signal protocol, electrical definitions, and configuration definitions as the PCI Express Base Specification, Revision 2.0. Where this specification does not explicitly define PCI Express characteristics, the PCI Express Base Specification governs. show less
2.x Specification
PCI Express® 225 W/300 W High Power Card Electromechanical Specification Revision 1.0
The main objective of this specification is to suppo...view more The main objective of this specification is to support PCI Express® add-in cards that require higher power than specified in the PCI Express Card Electromechanical Specification and the PCI Express x16 Graphics 150W-ATX Specification. show less
1.x Specification
PCI Express Mini Card Electromechanical Specification Revision 1.2 with Change Bar
This specification defines an implementation for sma...view more This specification defines an implementation for small form factor PCI Express cards. The specification uses a qualified sub-set of the same signal protocol, electrical definitions, and configuration definitions as the PCI Express Base Specification, Revision 1.1. Where this specification does not explicitly define PCI Express characteristics, the PCI Express Base Specification governs. show less
1.x Specification
PCI Express Mini Card Electromechanical Specification Revision 1.2
This specification defines an implementation for sma...view more This specification defines an implementation for small form factor PCI Express cards. The specification uses a qualified sub-set of the same signal protocol, electrical definitions, and configuration definitions as the PCI Express Base Specification, Revision 1.1. Where this specification does not explicitly define PCI Express characteristics, the PCI Express Base Specification governs. show less
1.x Specification
PCI Express Card Electromechanical Specification Revision 2.0 with Change Bar
This specification is a companion for the PCI Expres...view more This specification is a companion for the PCI Express Base Specification, Revision 2.0. Its primary focus is the implementation of an evolutionary strategy with the current PCI™ desktop/server mechanical and electrical specifications. The discussions are confined to ATX or ATX-based form factors. Other form factors, such as PCI Express® Mini Card are covered in other separate specifications. show less
2.x Specification
PCI Express Card Electromechanical Specification Revision 2.0
This specification is a companion for the PCI Expres...view more This specification is a companion for the PCI Express Base Specification, Revision 2.0. Its primary focus is the implementation of an evolutionary strategy with the current PCI™ desktop/server mechanical and electrical specifications. The discussions are confined to ATX or ATX-based form factors. Other form factors, such as PCI Express® Mini Card are covered in other separate specifications. show less
2.x Specification
PCI Express External Cabling Specification Revision 1.0
This is a companion specification to the PCI Express...view more This is a companion specification to the PCI Express Base Specification. Its primary focus is the implementation of cabled PCI Express®. The discussions are confined to copper cabling and their connector requirements to meet the PCI Express signaling needs at 2.5 GT/s. No assumptions are made regarding the implementation of PCI Express compliant Subsystems on either side of the cabled Link; e.g., PCI Express Card Electromechanical (CEM), ExpressCard™, ExpressModule™, PXI Express™, system board, or any other form factor. Such form factors are covered in other separate specifications. show less
1.x Specification
PCI Express Card Electromechanical Specification Revision 1.1
This specification is a companion for the PCI Expres...view more This specification is a companion for the PCI Express Base Specification, Revision 1.1. Its primary focus is the implementation of an evolutionary strategy with the current PCI desktop/server mechanical and electrical specifications. The discussions are confined to ATX or ATX-based form factors. Other form factors, such as PCI Express Mini Card are covered in other separate specifications. show less
1.x Specification
PCI Express Card Electromechanical Specification Revision 1.1 with Change Bar
This specification is a companion for the PCI Expres...view more This specification is a companion for the PCI Express Base Specification, Revision 1.1. Its primary focus is the implementation of an evolutionary strategy with the current PCI desktop/server mechanical and electrical specifications. The discussions are confined to ATX or ATX-based form factors. Other form factors, such as PCI Express Mini Card are covered in other separate specifications. show less
1.x Specification
PCI Express ExpressModule Electromechanical Specification Revision 1.0
This document is a companion specification to the PC...view more This document is a companion specification to the PCI Express Base Specification. Its primary focus is the implementation of a modular I/O form factor that is focused on the needs of workstations and servers from mechanicals and electrical requirements. The discussions are confined to the modules and their chassis slots requirements. Other form factors are covered in other separate specifications. show less
1.x Specification
PCI Express x16 Graphics 150W-ATX Specification Revision 1.0
The objectives of this specification are Support for...view more The objectives of this specification are Support for PCI Express™ graphics add-in cards that are higher power than specified in the PCI Express Card Electromechanical Specification, Forward looking for future scalability, Allow evolution of the PC architecture including graphics, Upgradeability, and Enhanced end user experience. show less
1.x Specification