Compaq COM Express Extension User's Manual
Contents
1. 6 2 Smart Battery BIOS support The BIOS supports smart battery to monitor the actual battery state on your system MARS is a Smart Battery reference System that is able to control up to two Smart batteries The reference system will be implemented on a customized carrier board The core of the SBS MARS is a dual Smart Battery System Manager Additionally the system contains a buck boost converter at the input side a dual buck converter and a buck boost converter at the output side There is also a CPLD used in MARS to get the functionality of an ATX power supply and for additional tasks Copyright COM Express Extension 19 Specification Rev 013 6 Software extensions MARS Mobile Application platform for Rechargeable Systems Please following the link listed below to the document where you can find more information regarding a Smart Battery reference system http emea kontron com products computeronmodules etx mars html 6 3 Legacy Super I O support in BIOS Although COM Express M is meant for legacy free systems there still often is the need for legacy interfaces like serial port parallel port floppy etc To make an adaption of these ports possible the BIOS of COM Express modules has integrated support for LPC SUPER I O chips For detailed description please see the COM Express Design Guide More information http www comexpress extension com datasheet COM Express Design Guide Rev 14 pdf 6 4 CMOS b2. gt COM Express Extension gt Specification Rev 013 This page intentionally left blank Table of Contents Table of Contents 1 5 1 1 About This 1206 5 1 2 Copyright NOUCE LE 5 1 3 Technical Er en d 5 1 4 DiS CNAME A ETE 5 2 Tntrodtcti n DL 6 2 1 COM Express Extension Specification 7 6 2 2 COM Express Design Guide mirra e oe ER rege iy ai ee evade 6 2 3 COM Express Computer On Module eene nne 6 2 4 ODOC VE eege ies 8 3 COM Express Module sizes 25225282 26222522226265526 5240 22520821202 2582 268 258266 25 62262266 26 9 3 1 Overview Module Size ore etie teneret lascagteshaceven AEN OR Eden 9 3 1 1 Figure Overview three module sizes esee 10 3 1 2 Small Form Factor nano COM Express Type 1 eee 10 Figure 3 Small Form Factor egesegueeegetege eebe gheet 11 4 Sional Tenit 12 4 1 Graphic Signal 12650 eerte ua deett hb edo osa eaa 12 4 1 Table Graphic Signal Description Row C for Pin out Type 2 12 4 1 2 Table Graphic Signal Description Row D for Pin out Type 2 13 5 Hardware EXTENSIONS MT 15 5 1 Wide Rang
3. future more compact footprints like microETXexpress and nanoETXexpress are present High performance mezzanine connector with several defined pin out types to satisfy a range of application requirements The COM Express Extension specification has been created to support to a range of vertical embedded markets It has been formulated to be applicable to a broad range of system types from floor installed and bench top to mobile handheld Markets and applications include but are not limited to VV ON WV Healthcare clinical diagnostic imaging systems patient bedside monitors etc Retail amp advertising electronic shopping carts billboards kiosks POS POI systems etc Gaming amp entertainment simulators slot machines etc Test amp measurement scientific and industrial test and measurement instruments Industrial automation industrial robots vision systems etc Security digital CCTV luggage scanners intrusion detectors etc Defence amp government unmanned vehicles rugged laptops wearable computers etc Systems developed according to the COM Express Extension Specification require the implementation of an application specific carrier board that accepts the module The carrier board is typically a 4 to 8 layer PCB User specific features such as external connector choices and locations and peripheral circuits can be tailored to suit the application The OEM can focus on applica
4. indeed ec tote doo ER tete ie ede 23 8 APPENDIX B DOCUMENT REVISION HISTORY eee esee eee eee en sees eese ete to noto 24 Copyright COM Express Extension iv Specification Rev 012 User Information 1 User Information 1 1 About This Document This document provides information about products from Kontron Embedded Modules GmbH and or its subsidiaries No warranty of suitability purpose or fitness is implied While every attempt has been made to ensure that the information in this document is accurate the information contained within is supplied as is and is subject to change without notice For the circuits descriptions and tables indicated Kontron assumes no responsibility as far as patents or other rights of third parties are concerned 1 2 Copyright Notice Copyright 2007 2008 COM Express Extension Kontron Embedded Modules GmbH and Advantech Co Ltd are founding members of the COM Industrial Group the purpose of which is the definition marketing and promotion of the COM Technologies Kontron Embedded Modules GmbH and Advantech Co Ltd Have significantly contributed to the development and promotion of the COM Industrial Standard and administrates the COM Industrial Group s website http www com ig org All rights reserved No part of this document may be reproduced transmitted transcribed stored in a retrieval system or translated into any language
5. PEG_TX6 SDVOC_BLU TMDS DATA 3 DPC_LANE2 D72 PEG_TX6 SDVOC_BLU TMDS DATA 3 DPC_LANE2 D73 SDVO_CLK D74 PEG_TX7 SDVOC_CLK TMDS_2_CLK DPC_LANE3 D75 PEG_TX7 SDVOC_CLK TMDS_2_CLK DPC_LANE3 D76 GND GND GND D77 IDE_CBLID IDE_CBLID IDE_CBLID D78 PEG_TX8 DVO_SDA DPD LANEO D79 PEG_TX8 DVO_SCL DPD_LANEO D80 GND FIXED GND FIXED GND FIXED D81 PEG_TX9 DVO_HPD DPD_LANE1 D82 PEG TXO9 DPD_LANE 1 D83 RSVD RSVD RSVD D84 GND GND GND D85 PEG_TX10 DPD_LANE2 D86 PEG TXI10 DPD_LANE2 D87 GND GND GND D88 PEG_TX11 DVO CLK DPD_LANE3 D89 PEG_TX11 DPD_LANE3 D90 GND FIXED GND FIXED GND FIXED D91 PEG_TX12 D92 PEG_TX12 D93 GND GND GND D94 PEG_TX13 D95 PEG TXI13 D96 GND GND GND D97 PEG_ENABLE PEG_ENABLE PEG_ENABLE D98 PEG_TX14 D99 PEG_TX14 D100 GND FIXED GND FIXED GND FIXED D101 PEG_TX15 D102 PEG_TX15 D103 GND GND GND D104 VCC_12V VCC_12V VCC_12V D105 VCC_12V VCC_12V VCC_12V D106 VCC_12V VCC_12V VCC_12V D107 VCC_12V VCC_12V VCC_12V D108 VCC_12V VCC_12V VCC_12V D109 VCC_12V VCC_12V VCC_12V D110 GND FIXED GND FIXED GND FIXED Copyright COM Express Extension 14 Specification Rev 013 5 Hardware extensions 5 Hardware extensions Wide Range Input Power for basic extended and micro form factor Wide range input power 8 5 VDC to 18VDC It allows direct operation from 108 nominal 3 cell lithium ion battery pack to 4 cell lithium ion battery packs
6. or computer language in any form or by any means electronic mechanical photocopying recording or otherwise without the express written permission of COM Industrial Group founding Members 1 3 Technical Support Technicians and engineers from COM Industrial Group Members are available for technical support We are committed to making our product easy to use and will help you use our products in your systems http www comexpress extension org members members php Before contacting COM Industrial Group Members technical support please consult our web site at http www comexpress extension org for the latest product documentation utilities and drivers If the information does not help solve the problem contact us by email http www comexpress extension org contact contact php 1 4 Disclaimer Although the information presented in this document was carefully reviewed and is believed to be accurate it is not guaranteed The reader assumes all liability for the use of the information herein Copyright COM Express Extension Specification Rev 013 2 Introduction 2 Introduction 2 1 COM Express Extension Specification The COM Express Extension Specification builds on the COM Express COM UO standard as defined by the PCI Industrial Computer Manufacturers Group PICMG which is an industry standard adopted for Computer On Modules The COM Express Extension Specification is focused with its
7. 0 SDVO_TVCLK HDMI_TVCLKIN C53 PEG_RX0 SDVO_TVCLK HDMI_TVCLKIN C54 TYPEO TYPEO TYPEO TYPEO C55 PEG_RX1 SDVOB_INT C56 PEG RXI SDVOB INT C57 TYPE1 TYPE1 TYPEI TYPE1 C58 PEG_RX2 SDVO_FLDSTALL TMDS_DDC_DAT DPB_AUX C59 PEG_RX2 SDVO_FLDSTALL TMDS_DDC_CLK DPB_AUXB C60 GND FIXED GND FIXED GND FIXED GND FIXED C61 PEG RX3 TMDS HPD DPB HPD C62 PEG RX3 C63 RSVD RSVD RSVD RSVD C64 RSVD RSVD RSVD RSVD C65 PEG RX4 C66 PEG_RX4 C67 RSVD RSVD RSVD RSVD C68 PEG_RX5 SDVOC_INT C69 PEG RX5 SDVOC INT C70 GND FIXED GND FIXED GND FIXED GND FIXED C71 PEG RX6 TMDS 2 DDC DAT DPC AUX C72 PEG RX6 TMDS 2 DDC CLK DPC AUXB C73 SDVO DATA SDVO DATA C74 PEG RX7 TMDS 2 HPD DPC HPD C75 PEG RXT7 C76 GND GND GND C77 RSVD RSVD RSVD Copyright COM Express Extension 12 Specification Rev 013 4 Signal Description C78 PEG 88 DVO DII C79 PEG RXS DVO D10 C80 GND FIXED GND FIXED GND FIXED C81 PEG_RX9 DVO D9 C82 PEG_RX9 DVO 8 C83 RSVD RSVD RSVD C84 GND GND GND C85 PEG_RX10 DVO D7 DPD_AUX C86 PEG_RX10 DVO D6 DPD_AUXB C87 GND GND GND C88 PEG_RX11 DVO CLK DPD_HPD C89 PEG RXII DVO 5 C90 GND FIXED GND FIXED GND FIXED C91 PEG RXI2 DVO D4 C92 PEG RXI2 DVO D3 C93 GND GND GND C94 PEG 13 DVO D2 C95 PEG RXI3 DVODI C96 GND GND GND C97 RSVD RSVD RSVD C98 PEG_RX14 DVO DO C99 PEG_RX14 DVO DE C100 GND
8. 16 8 V fully charged Additionally Smart Battery Support offers a great base for a mobile application See Software section for more details 5 1 Wide Range Input Power for nano SmallFormFactor SFF The nano modules should use a single main power rail with a wide range power supply of 5V to 14V 5 4 75V to 14 7V Two additional rails are specified a 5 V standby power rail and a 43V battery input to power the module real time clock RTC circuit in the absence of other power sources The 5V standby rail could be left unconnected on the carrier board if the standby functions are not required by the application Likewise the 3V battery input may be left open if the application does not require the RTC to keep time in the absence of the main and standby sources There may be module specific concerns regarding storage of system setup parameters that may be affected by the absence of the 5V standby and or the 3V battery The rationale for this power delivery scheme is Module pins are scarce It is more pin efficient to bring power in on a higher voltage rail Single supply operation is attractive to many users Lithium ion battery packs for mobile systems are most prevalent with a 14 4V output This is well suited for the 12V main power rail Contemporary chipsets have no power requirements for 5V other than to provide a reference voltage for 45V tolerant inputs No COM Express module pins are allocated to acce
9. FIXED GND FIXED GND FIXED C101 PEG_RX15 DVO HS C102 PEG RXI5 DVO VS C103 GND GND GND C104 VCC 12V VCC 12V VCC 12V C105 VCC 127 VCC 12V VCC 12V C106 VCC 127 VCC 12V VCC 12V C107 VCC 12V VCC 12V VCC 12V C108 VCC 127 VCC 12V VCC 12V C109 VCC 127 VCC 12V VCC 12V C110 GND FIXED GND FIXED GND FIXED 4 1 2 Table Graphic Signal Description Row D for Pin out Type 2 RowD Definition PCIE x 16 SDVO TMDS DVD HDMI DVO Display Port Pin No Pin Name D52 PEG_TX0 SDVOB_RED TMDS DATA 2 DPB_LANEO D53 PEG TXO SDVOB RED TMDS DATA 2 DPB_LANEO D54 PEG LANE RV PEG LANE PEG LANE PEG LANE D55 PEG_TX1 SDVOB_GRE TMDS DATA 1 DPB LANEI D56 PEG TXI SDVOB GRE TMDS DATA 1 DPB LANEI D57 TYPE2 TYPE2 TYPE2 TYPE2 D58 PEG_TX2 SDVOB_BLU TMDS DATA 0 DPB_LANE2 D59 PEG TX2 SDVOB BLU TMDS DATA 0 DPB_LANE2 D60 GND FIXED GND FIXED GND FIXED GND FIXED Copyright COM Express Extension 13 Specification Rev 013 4 Signal Description D61 PEG TX3 SDVOB_CLK TMDS Clock DPB_LANE3 D62 PEG_TX3 SDVOB_CLK TMDS Clock DPB_LANE3 D63 RSVD RSVD RSVD RSVD D64 RSVD RSVD RSVD RSVD D65 PEG_TX4 SDVOC_RED TMDS DATA 5 DPC LANEO D66 PEG TX4 SDVOC RED TMDS DATA 5 DPC_LANEO D67 GND GND GND GND D68 PEG TX5 SDVOC_GRE TMDS DATA 4 DPC LANEI D69 PEG TX5 SDVOC GRE TMDS DATA 4 DPC_LANE1 D70 GND FIXED GND FIXED GND FIXED GND FIXED D71
10. Molex 53261 0390 Mates with 51021 0300 Crimp terminals 50079 8100 Electrical characteristics Vec 5V Imax continuous 0 68 A Imax pulsed 2 A Sense Tacho pulse 4 Pulses per turn Von VoL OV pem rum pum vam 7 12 13 4 T1 T2 T3 T4 FAN 1 TURN T T1 T2 T3 T4 60 N SEC N FAN SPEED r p m Copyright COM Express Extension 18 Specification Rev 013 6 Software extensions 6 Software extensions 6 1 TPM support Trusted Computing is a technology developed and promoted by the Trusted Computing Group TCG The term is taken from the field of trusted systems and has a specialized meaning Trusted computing means that the computer will consistently behave in specific ways and those behaviors will be enforced by hardware and software Trusted computing encompasses five key technology concepts of which all are required for a fully trusted system Endorsement Key Secure Input and Output gt Memory curtaining Protected execution Sealed storage Remote attestation COM Express Extension COM are designed to support basic TPM features more information TBD COM Express Extension COMs are compliant to TCG 1 2 That includes efficient processing of hash and RSA algorithms with key length up to 2048bit and random generator This technology is necessary for all security sensitive applications such as those for the gaming and e commerce industries
11. The SD card includes internal pull up resistors for all data lines By default after power up only DATAO is used for data transfer Wider data bus widths can be configured for data transfer SD CMD UO SDIO Controller 0 1 2 Command This signal is CMOS3 3 used for card initialization and transfer of commands It has two operating modes open drain for initialization mode and push pull for fast command transfer SD1 CLK O SDIO Controller 0 1 2 Clock With each cycle of this CMOS3 3 signal a one bit ransfer on the command and each data line occurs This signal is generated by Intel SCH at a maximum frequency of 24 Mhz for SD and SDIO 48 Mhz for MMC SDO WP SDIO Controller 0 1 2 Write Protect These signals CMOS3 3 denote the state of the write protect tab on SD cards CD SDIO Controller 0 1 2 Card Detect Indicates when CMOS3 3 a card is present in an external slot Copyright COM Express Extension Specification Rev 013 17 5 Hardware extensions 5 3 Thermal Control A three pin fan header is stuffed onboard the module to support thermal control through the use of a fan Through BIOS settings it is possible to control the fan depending on the Active Trip Point temperature The fan switches on off depending on the adjusted Active Trip Point temperature In order for this feature to function properly an ACPI compliant OS is necessary Except for nanoETXexpress modules Part number
12. ackup in BIOS CMOS backup is supported by the BIOS Customer settings are saved in spite of battery remove in the EEPROM 6 4 1 Console redirection in BIOS More information TBD 6 4 2 User editor for default settings More information TBD Copyright COM Express Extension 20 Specification Rev 013 7 Apendix A PC Architecture Information 7 Apendix A PC Architecture Information The following sources of information can help you better understand PC architecture 7 1 Buses 7 1 1 ISA Standard PS 2 Connectors gt AT Bus Design Eight and Sixteen Bit ISA E ISA and EISA Design Edward Solari Annabooks 1990 ISBN 0 929392 08 6 ATIBM Technical Reference Vol 1 amp 2 1985 ISA amp EISA Theory and Operation Edward Solari Annabooks 1992 ISBN 0929392159 gt ISA Bus Specifications and Application Notes Jan 30 1990 Intel ISA System Architecture Third Edition Tom Shanley and Don Anderson Addison Wesley Publishing Company 1995 ISBN 0 201 40996 8 Personal Computer Bus Standard P996 Draft D2 00 Jan 18 1990 IEEE Inc gt Technical Reference Guide Extended Industry Standard Architecture Expansion Bus Compaq 1989 7 1 2 PCI gt PCISIG The PCI SIG provides a forum for its 900 member companies who develop PCI products based on the specifications that are created by the PCI SIG You can search for information about the SIG on the Web gt PCI amp PCI X Hardware and Software Arc
13. e Data Book includes application notes Type 232 as search criteria to obtain a list of application notes You can search for information about the data book on National Semiconductor s Web site 7 3 2 Serial ATA Serial AT Attachment ATA Working Group gt This X3T10 standard defines an integrated bus interface between disk drives and host processors It provides a common point of attachment for systems manufacturers and the system You can search for information about the working group on the Web We recommend you also search the Web for information on 4 2 T O cable if you use hard disks in a DMA3 or PIO4 mode 7 3 3 USB USB Specification USB Implementers Forum Inc is a non profit corporation founded by the group of companies that developed the Universal Serial Bus specification The USB IF was formed to provide a support organization and forum for the advancement and adoption of Universal Serial Bus technology You can search for information about the standard on the Web Copyright COM Express Extension 22 Specification Rev 013 7 Apendix A PC Architecture Information 7 4 Programming C Programmer s Guide to Serial Communications Second Edition Joe Campbell SAMS 1987 ISBN 0 672 22584 0 Programmer s Guide to the EGA VGA and Super VGA Cards Third Edition Richard Ferraro Addison Wesley 1990 ISBN 0 201 57025 4 The Programmer s PC Sourcebook Second Edition Thom Hogan Microsoft Pre
14. e Input POWeL Ire oe he ei rn eret i iba deis EE 15 5 1 1 Wide Range Input Power for nano SEE 15 5 2 GPIO General Purpose I O Recommended Use Ne 16 5 2 1 Alternative GPIO use for SDIO Interface 17 SDIO Pin description 17 5 3 Thermal eu de 18 6 Software exXtensiOnS sssissssssesssassessscasse ssessesisutssussv tssssps esrerseasecksttedicssess dsotopicsstsstes stortc ias 19 6 1 RS EE eer 19 6 2 Smart Battery BIOS 19 6 3 Legacy Super I O support in BOS 20 6 4 CMOS backup m BIOS 20 6 4 Console redirection in BIO 20 Copyright COM Express Extension iii Specification Rev 012 Table of Contents 6 4 2 User editor for default SettingS essere eene nennen 20 7 Apendix A PC Architecture Information ee 21 7 1 BUSES echo eei e le nod e Ea bee E Re SERS a bete aee pet eee 21 7 1 1 ISA Standard PS 2 Connectors nsession oins aianei nennen 21 7 1 3 PCI21 7 2 General PC Archite Cure sissies der re OR STE I beaten EN 21 7 3 e EE 22 3 1 RS232 Seral nen e eanan a Ae rA eola 22 13 22 Seral ATA a oe ite ete tei e HR E dacs des Abeta e e 22 l3 USB isin einen sen i ER RR UG AREE TIS GUT REG IR Ce 22 7 4 Programming
15. hey too will utilize the same connectors and pin outs Up to 440 pins of connectivity are available between COM Express modules and the carrier board Legacy buses such as PCI parallel ATA LPC AC 97 can be supported as well as new high speed serial interconnects such as PCI Express Serial ATA or SAS and Gigabit Ethernet To enhance interoperability between COM Express modules and carrier boards five common signalling configurations Pin out Types have been defined to ease system integration Some Pin out Types definitions require only a single 220 pin connector like nanoETXexpress and others require both 220 pin connectors to supply all the defined signalling Copyright COM Express Extension Specification Rev 013 3 COM Express Module sizes Figure Overview three module sizes All coordinates in mm top view X1 is on bottom side seen through pcb 110 106 35 51 a J d VC 7a a d o a E 5 H m m x m d a 18 m ES 4 4 E Up E yg qe ES gm m ha 3 1 1 Small Form Factor nano COM Express Type 1 Copyright COM Express Extension 10 Specification Rev 013 3 COM Express Module sizes The PCB size for the nano module is defined as 55mm x 84mm The holes shown in this drawing are intended for mounting the module heat spreader combination to the carrier board An independent implementation specific set of holes and spacers shall be used to a
16. hitecture amp Design Fifth Edition Edward Solari and George Willse Annabooks 2001 ISBN 0 929392 63 9 gt PCI System Architecture Tom Shanley and Don Anderson Addison Wesley 2000 ISBN 0 201 30974 2 7 2 General PC Architecture Embedded PCs Markt amp Technik GmbH ISBN 3 8272 5314 4 German Hardware Bible Winn L Rosch SAMS 1997 0 672 30954 8 Interfacing to the IBM Personal Computer Second Edition Lewis C Eggebrecht SAMS 1990 ISBN 0 672 22722 3 The Indispensable PC Hardware Book Hans Peter Messmer Addison Wesley 1994 ISBN 0 201 62424 9 Copyright COM Express Extension 21 Specification Rev 013 7 Apendix A PC Architecture Information The PC Handbook For Engineers Programmers and Other Serious PC Users Sixth Edition John P Choisser and John O Foster Annabooks 1997 ISBN 0 929392 36 1 7 3 Ports 73 1 RS 232 Serial gt EIA 232 E standard The EIA 232 E standard specifies the interface between for example a modem and a computer so that they can exchange data The computer can then send data to the modem which then sends the data over a telephone line The data that the modem receives from the telephone line can then be sent to the computer You can search for information about the standard on the Web RS 232 Made Easy Connecting Computers Printers Terminals and Modems Martin D Seyer Prentice Hall 1991 ISBN 0 13 749854 3 National Semiconductor The Interfac
17. intellectual properties on the deep embedded market and is intended to be an add on to the PICMG s COM Express COM 0 Specification It is the intention of the authors of this specification to propose the information contained here within to PICMG as a means of updating the current COM Express standard to ensure continued saleability and compatibility of all COM Express solutions 2 2 COM Express Extension Design Guide The COM Express Design Guide a separate document from both the PICMG COM Express Specification and this COM Express Extension Specification is available to COM Express module customers upon request For download the COM Express Extension Design guide please visit our web page http www comexpress extension com specs specs php The COM Express Design Guide explores the requirements of the COM Express Extension Specification and provides recommendations on designing COM Express baseboards to support various features of COM Express compliant modules The COM Express Design Guide based upon the COM Express Extension Specification and PICMG COM Express Specification discusses capabilities in the specification with schematic examples where applicable and offers ideas to consider for maximum flexibility in designing baseboards 2 3 COM Express Computer On Module A COM Express Computer On Module COM is a module with all components necessary for a bootable host compute
18. pt 5V except for the 5V standby pins In the case of an ATX supply the switched non standby 5V line would not be used for the COM ExpressIM module but it might be used elsewhere on the carrier board Copyright COM Express Extension 15 Specification Rev 013 5 2 GPIO General Purpose I O Recommended Use 5 Hardware extensions In general GPIOs are defined for specific customers Any generic GPIOs should be be set as well in order to assure compatibility of various COM Express compliant modules and carrier boards Pin Description Recomended Use Function Comment GPIO General Purpose Input LID Button Power Management Event Please see Board Specification General Purpose Input GPI2 General Purpose Input GPI3 General Purpose Input GPOO General Purpose Output Fan Control TTL output for external fan Please see Board Specification GPOI General Purpose Output GPO2 General Purpose Output GPO3 General Purpose Output Copyright COM Express Extension Specification Rev 013 16 5 Hardware extensions 5 2 1 Alternative GPIO use for SDIO Interface Pin GPIO SDIO Pin GPIO SDIO DATAO EISE GPO1 DATA1 KE GPO2 DATA2 KI GPO3 CD SDIO Pin description Signal Type Description SD_DATA 3 0 I O SDIO Controller 0 1 2 Data These signals operate CMOS3 3 in push pull mode
19. r packaged as a super component COMs require a carrier board in order to bring out I O and to power up the CPU module COMs are used to build single board computer solutions and offer OEMs fast time to market with reduced development cost Like integrated circuits they provide OEMs with significant freedom when working to meet form fit function requirements For all of these reasons COM methodology has gained significant popularity with OEMs in the embedded industry The COM Express standard is designed to be future proof and to provide a smooth transition path from legacy parallel interfaces to LVDS Low Voltage Copyright COM Express Extension Specification Rev 013 2 Introduction Differential Signalling interfaces These include the PCI bus and parallel ATA on the one hand and PCI Express and Serial ATA on the other hand Key features include Rich complement of contemporary high bandwidth serial interfaces including PCI Express Serial ATA USB 2 0 and Gigabit Ethernet 32 bit PCI LPC and Parallel ATA options preserved for easy interface to a range of peripherals Extended power management capabilities Robust thermal and mechanical concept Cost effective design Legacy free design no Super I O PS2 keyboard or mouse COM Express module size with two currently defined footprint options Basic and Extended to satisfy a range of performance requirements The option for
20. s Extension 24 Specification Rev 013
21. ss 1991 ISBN 1 55615 321 X Undocumented PC A Programmer s Guide to I O CPUs and Fixed Memory Areas Frank van Gilluwe Second Edition Addison Wesley 1997 ISBN 0 201 47950 8 Copyright COM Express Extension Specification Rev 013 23 8 APPENDIX B DOCUMENT REVISION HISTORY 8 APPENDIX B DOCUMENT REVISION HISTORY 02 06 06 Created preliminary specification 0 2 05 10 06 Z Loncaric Index updates no microETXexpress inputs anymore now a separate specification new hardware software and mechanical issues 05 04 07 Defined new Defined new chapter 4 0 Signal Description 4 1 Graphic signal description 4 0 Signal Description 4 1 Graphic signal description 4 02 04 07 2 Loncaric Neutral document ED SS EO Update by comments of Aaron Su Aaron Su 0 15 05 07 Z Loncaric Brand COM Express Extension Updates for chapters 4 1 Grafic signal description P M ller 5 2 General GPIOs 5 3 Thermal Control 6 1 TPM Support 6 3 Legacy Superl O Support 16 05 07 C VanDe Minor message and grammar edits Graaf 0 7 24 07 07 M Ciolacu New neutral layout N Feuerecker 1 1 31 05 08 VGG Add 3 1 2 new small form factor nano add 5 2 1alternative GPIO use for SDIO interface add 5 1 1 wide Range for SFF 02 06 08 Minor changes and grammar edits 11 06 08 Minor changes enter reverence to micro and nano 12 12 2008 Correction of revision numbers 0 11 to 1 1 0 12 to 1 2 Copyright COM Expres
22. tion Copyright COM Express Extension Specification Rev 013 2 Introduction specific features rather than caring for a CPU board design The OEM also benefits from a wide choice of modules providing a scalable range of price and performance upgrade options 2 4 Objective Consistent with the objective of the PICMG COM Express Specification the COM Express Extension specification defines COM Express compliant modules at a level of detail sufficient to allow interoperability between independent vendor modules and carrier boards Copyright COM Express Extension Specification Rev 013 3 COM Express Module sizes 3 COM Express Module sizes 3 1 Overview Module Size The primary difference between the current basic module and the extended module as well as future compact footprints like microETXexpress and nanoETXexpress is the over all physical size and the performance envelope supported by each The extended module offers larger real estate and can accommodate larger processor chips and memory solutions which are not possible on the basic module The extended module and the basic module use the same connectors and pin outs and utilize several common mounting hole positions This level of compatibility allows that a carrier board designed to accommodate an extended module can also support a basic module microETXexpress or nanoETXexpress modules This holds true for any future defined compact modules as t
23. ttach the heat spreader to the module Figure Small Form Factor nano All dimensions are shown in millimetres Tolerances should be 0 25mm 0 010 unless noted otherwise The tolerances on the module connector locating peg holes dimensions 16 50 6 00 should be 0 10mm 0 004 The 220 pin connector shall be mounted on the backside of the PCB and is seen through the board in this view The X mounting holes shown should use 6mm diameter pads and should have 2 7mm plated holes for use with 2 5mm hardware The pads should be tied to the PCB ground plane Copyright COM Express Extension 11 Specification Rev 013 4 Signal Description d Signal Description 4 1 Graphic Signal Description Based on the different available graphic interfaces offered by the different chipsets from silicon vendors including Intel ATI VIA etc there is a need for optional assignment in addition to the ones already defined by PICMG in the COM 0 specification These will allow for ease when integrating upcoming new graphic interfaces while still assuring compatibility of COM Express compliant modules and carrier boards Graphic signals are defined on Row C and Row D The following table describes the signal uses up on the required graphic interface 4 1 1 Table Graphic Signal Description Row C for Pin out Type 2 Row C Definition PCIEx 16 SDVO TMDS DVD HDMI DVO Display Port Pin No Pin Name C52 PEG_RX
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