PICMG EXP.0 R1.0 Specification
Release Candidate 1
Draft
May 27, 2005
DRAFT SPECIFICATION FOR REVIEW ONLY
DO NOT DESIGN TO/DO NOT CLAIM COMPLIANCE TO/DO NOT
DISTRIBUTE THIS SPECIFICATION
CompactPCI Express
®
PICMG EXP.O CompactPCI Express Specification, Draft R1.0 RC1, May 27, 2005
Do Not Design To/Do Not Claim Compliance To/Do Not Distribute This Specification
©
Copyright 2005, PCI Industrial Computer Manufacturers Group.
The attention of adopters is directed to the possibility that compliance with or adoption of PICMG
®
specifications may require use of an invention
covered by patent rights. PICMG
®
shall not be responsible for identifying patents for which a license may be required by any PICMG
®
specification or
for conducting legal inquiries into the legal validity or scope of those patents that are brought to its attention. PICMG
®
specifications are prospective
and advisory only. Prospective users are responsible for protecting themselves against liability for infringement of patents.
NOTICE:
The information contained in this document is subject to change without notice. The material in this document details a PICMG
®
specification in
accordance with the license and notices set forth on this page. This document does not represent a commitment to implement any portion of this
specification in any company's products.
WHILE THE INFORMATION IN THIS PUBLICATION IS BELIEVED TO BE ACCURATE, PICMG
®
MAKES NO WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY OF TITLE OR OWNERSHIP,
IMPLIED WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR PARTICULAR PURPOSE OR USE.
In no event shall PICMG
®
be liable for errors contained herein or for indirect, incidental, special, consequential, reliance or cover damages, including
loss of profits, revenue, data or use, incurred by any user or any third party.
Compliance with this specification does not absolve manufacturers of CompactPCI
®
Express equipment from the requirements of safety and
regulatory agencies (UL, CSA, FCC, IEC, etc.).
The PICMG
®
and CompactPCI
®
names and the PICMG
®
, CompactPCI
®
, and CompactPCI
®
Express logos are registered trademarks of the PCI
Industrial Computer Manufacturers Group.
All other brand or product names may be trademarks or registered trademarks of their respective holders.
PICMG EXP.O CompactPCI Express Specification, Draft R1.0 RC1, May 27, 2005 3
Do Not Design To/Do Not Claim Compliance To/Do Not Distribute This Specification
Contents
1 Introduction ..........................................................................................................13
1.1 Statement of Compliance ............................................................................ 13
1.2 Terminology.................................................................................................13
1.3 Applicable Documents.................................................................................18
1.4 Objectives....................................................................................................19
1.5 Name and Logo Usage ...............................................................................20
1.5.1 Logo Use ........................................................................................20
1.5.2 Trademark Policy ...........................................................................20
1.6 Intellectual Property.....................................................................................21
1.7 Special Word Usage....................................................................................22
1.8 Connectors ..................................................................................................22
1.8.1 Legacy CompactPCI Connectors ...................................................22
1.8.2 High-Speed Advanced Differential Fabric Connectors...................23
1.8.3 UPM Power Connectors .................................................................25
1.8.3.1 System Slot/Board and Type 1 Peripheral Slot/Board.... 25
1.8.3.2 Switch Slot/Board ...........................................................26
1.8.4 eHM Connector ..............................................................................27
1.8.5 CompactPCI Pluggable Power Supply Connector ......................... 27
1.9 Slot and Board Descriptions........................................................................28
1.9.1 Connector Reference Designators ................................................. 31
1.9.2 System Slot and Board...................................................................31
1.9.3 Type 1 Peripheral Slot and Board ..................................................32
1.9.4 Type 2 Peripheral Slot and Board ..................................................33
1.9.5 Hybrid Peripheral Slot .................................................................... 35
1.9.6 Legacy Slot.....................................................................................36
1.9.7 Switch Slot and Board ....................................................................36
1.9.7.1 3U Switch Slot and Board...............................................36
1.9.7.2 6U Switch Slot and Board...............................................37
1.10 Example Configurations ..............................................................................40
2 Mechanical Requirements ..................................................................................45
2.1 Mechanical Overview ..................................................................................45
2.2 Drawing Standard........................................................................................45
2.3 Units ............................................................................................................ 45
2.4 Keepout Zones ............................................................................................45
2.5 Connector Requirements ............................................................................45
2.5.1 ADF Connectors .............................................................................45
2.5.1.1 Board Connectors...........................................................45
2.5.1.2 Backplane Connectors without Hot-Plug Support ..........46
2.5.1.3 Backplane Connectors with Hot-Plug Support ...............46
2.5.2 eHM Connectors ............................................................................46
2.5.2.1 Board Connector Type Designation ............................... 46
2.5.2.2 Backplane Connectors without Hot-Plug Support ..........46
2.5.2.3 Backplane Connectors with Hot-Plug Support ...............46
2.5.3 UPM Connectors ............................................................................46
2.5.3.1 Backplane Connectors ................................................... 46
2.5.3.2 Board Connectors without Hot-Plug Support..................47
4 PICMG EXP.O CompactPCI Express Specification, Draft R1.0 RC1, May 27, 2005
Do Not Design To/Do Not Claim Compliance To/Do Not Distribute This Specification
2.5.3.3 Board Connectors with Hot-Plug Support....................... 47
2.5.4 HM Connectors .............................................................................. 47
2.5.5 47-Position Pluggable Power Supply Connector............................ 47
2.6 Chassis Subrack Requirements .................................................................. 47
2.7 Backplane Requirements ............................................................................ 47
2.7.1 3U Backplane Dimensions and Connector Locations .................... 47
2.7.2 6U Backplane Dimensions and Connector Locations .................... 49
2.8 Slot Numbering and Glyphs ........................................................................ 51
2.9 Board Requirements ................................................................................... 51
2.9.1 3U System/Type 1/Type 2 Board Dimensions and Connector
Locations ........................................................................................ 51
2.9.2 6U System/Type 1/Type 2 Board Dimensions and Connector
Locations ........................................................................................ 53
2.9.3 3U Switch Board Dimensions and Connector Locations................ 54
2.9.4 6U Switch Board Dimensions and Connector Locations................ 55
2.9.5 Board PCB Thickness .................................................................... 56
2.9.6 ESD Discharge Strip ...................................................................... 56
2.9.7 ESD Clip......................................................................................... 56
2.9.8 Front Panels ................................................................................... 56
2.9.9 CompactPCI Express Logo ............................................................ 57
2.9.10 PMC/XMC Support......................................................................... 57
2.9.11 Cross Sectional View ..................................................................... 58
2.9.12 Component Outline and Warpage.................................................. 58
2.9.13 Solder Side Cover (Optional) ......................................................... 58
2.9.14 Component Heights........................................................................ 59
2.9.15 System Slot Identification ............................................................... 59
2.10 Rear-Panel I/O Board Requirements .......................................................... 59
2.10.1 3U Rear-Panel I/O Board Dimensions ........................................... 59
2.10.2 6U Rear-Panel I/O Board Dimensions ........................................... 60
3 Electrical Requirements ...................................................................................... 62
3.1 Signal Definitions......................................................................................... 62
3.1.1 PCI Express Signals....................................................................... 62
3.1.1.1 PCI Express Transmit Signals........................................ 62
3.1.1.2 PCI Express Receive Signals......................................... 62
3.1.1.3 Interconnect Definition.................................................... 63
3.1.1.3.1 Link Definition .............................................. 63
3.1.1.3.2 Link Grouping .............................................. 63
3.1.1.4 Electrical Budgets........................................................... 64
3.1.1.4.1 AC Coupling................................................. 65
3.1.1.4.2 Insertion Loss .............................................. 65
3.1.1.4.3 Crosstalk...................................................... 66
3.1.1.4.4 Lane-to-Lane Skew...................................... 67
3.1.1.4.5 Equalization ................................................. 67
3.1.1.4.6 Skew within the Differential Pair (Intra-Pair
Skew)........................................................... 67
3.1.1.5 Jitter Budget Allocation................................................... 68
3.1.1.5.1 Random Jitter (Rj)........................................ 68
3.1.1.5.2 System Level Jitter Distribution ................... 69
3.1.1.5.3 Interconnect Jitter Budget............................ 69
3.1.1.5.4 Eye Patterns ................................................ 70
3.1.1.5.5 Type 2 Peripheral Transmitter Eye .............. 71
PICMG EXP.O CompactPCI Express Specification, Draft R1.0 RC1, May 27, 2005 5
Do Not Design To/Do Not Claim Compliance To/Do Not Distribute This Specification
3.1.1.5.6 Controller Transmitter Eye ...........................72
3.1.1.5.7 Type 2 Peripheral Receiver Eye ..................73
3.1.1.5.8 Controller Receiver Eye ...............................74
3.1.1.5.9 Backplane Compliance Testing ...................75
3.1.1.5.10 Alternative Controller TX Measurement.......77
3.1.1.6 Reference Clock ............................................................. 78
3.1.1.6.1 Hot-Plug .......................................................78
3.1.1.6.2 Clock Fan-Out..............................................79
3.1.1.6.3 Clocking Dependencies ............................... 79
3.1.1.6.4 AC-Coupling and Biasing.............................79
3.1.1.6.5 Routing Length.............................................80
3.1.1.6.6 Reference Clock Specification .....................81
3.1.1.6.7 REFCLK Phase Jitter Specification .............84
3.1.2 ESD ................................................................................................ 85
3.1.3 5 Vaux ............................................................................................85
3.1.4 SMBus............................................................................................85
3.1.4.1 SMBus “Back Powering” Considerations........................88
3.1.4.2 Backplane Identification and Capability Using SMBus ...88
3.1.5 PWRBTN# Signal ........................................................................... 94
3.1.6 PS_ON# Signal ..............................................................................94
3.1.7 PWR_OK Signal .............................................................................95
3.1.8 WAKE# Signal ................................................................................96
3.1.8.1 Implementation Note ......................................................98
3.1.9 PERST# Signal ..............................................................................99
3.1.9.1 Initial Power-Up (G3 to L0) ...........................................100
3.1.9.2 Power Management States (S0 to S3/S4 to S0) ..........101
3.1.9.3 Power Down .................................................................102
3.1.10 SYSEN# Signal ............................................................................ 103
3.1.11 Geographical Addressing .............................................................103
3.1.12 LINKCAP Signal ...........................................................................104
3.1.13 I/O Pins.........................................................................................104
3.1.14 Reserved Pins ..............................................................................104
3.2 Hot-Plug Support.......................................................................................104
3.2.1 Hot-Plug Sub-System Architecture...............................................104
3.2.2 Power Enable ...............................................................................107
3.2.3 Wake# ..........................................................................................108
3.2.4 Module Power Good.....................................................................108
3.2.5 Present Detection .........................................................................108
3.2.6 System Management Bus ............................................................108
3.2.7 System Management Bus Alert .................................................... 108
3.2.8 Attention LED ...............................................................................109
3.2.9 Attention Switch............................................................................109
3.2.10 DC Specifications .........................................................................109
3.3 Backplane Connector Pin Assignments ....................................................109
3.3.1 System Slot ..................................................................................109
3.3.1.1 4-Link Configuration .....................................................110
3.3.1.2 2-Link Combination Configuration ................................111
3.3.2 Peripheral Slot Type 1..................................................................113
3.3.3 Peripheral Slot Type 2..................................................................115
3.3.4 Hybrid Peripheral Slot .................................................................. 115
3.3.5 Legacy Slot...................................................................................117
