Specification
MXM Version 2.1A Graphics
Module
Thermal Electromechanical
Specification
November 2007
SP-03493-002_v1.0
SP-03493-002_v1.0 i
November 20, 2007
Document Change History
Version Date Reason for Change
1.0 November 20, 2007 Based on MXM Version 2.1 Graphics Module Thermal
Electromechanical Specification (SP-03493-001).
This document version includes optional support for
DisplayPort on DVI_B pins. It also includes the
following changes:
TV-out changed to optional
Reduced GPU zone height to align with current GPUs.
Fixed error in Type-III and Type-IV memory zones and
thermal mounting locations from MXM v2.1.
SP-03493-002_v1.0 ii
November 20, 2007
Table of Contents
Document Change History.................................................................................i
MXM Specification Changes ............................................................................ 1
Introduction .................................................................................................... 2
Applicable Documents..................................................................................... 3
Overview ......................................................................................................... 5
Key Features......................................................................................................5
Configurations....................................................................................................5
Display Support..................................................................................................6
MXM v 2.1A Display Options ............................................................................7
Mechanical Specifications ............................................................................... 8
Module Form Factors and Mechanical Keep Outs...................................................8
MXM-I PCB and Component Keep Outs...........................................................10
MXM-II PCB and Component Keep Outs..........................................................13
MXM-III PCB and Component Keep Outs.........................................................17
MXM-IV PCB and Component Keep Outs.........................................................21
Thermal Keep Outs...........................................................................................25
MXM-I Thermal Keep Outs.............................................................................25
MXM-II Thermal Keep Outs ...........................................................................26
MXM-III Thermal Keep Outs..........................................................................27
MXM-IV Thermal Keep Outs...........................................................................28
MXM Connectors...............................................................................................29
MXM Edge-Fingers........................................................................................29
MXM-I and MXM-II........................................................................................30
MXM-III and MXM-IV ....................................................................................32
MXM Connector............................................................................................34
Mounting and Retention....................................................................................39
MXM v 2.1A Compatibility..................................................................................39
Mechanical Requirements..................................................................................40
SP-03493-002_v1.0 iii
November 20, 2007
Backing Plate................................................................................................40
Thermal Solution Mounting............................................................................40
MXM Connector Requirements .......................................................................41
Electrical Specifications................................................................................. 42
PCI Express Support.........................................................................................42
Electrical Connector..........................................................................................42
Connector Pin Descriptions................................................................................46
Power Requirements.........................................................................................51
Auxiliary Signals ...............................................................................................52
Power Management States (S0 – S3/S4 – S0) .................................................57
Power Down.................................................................................................58
PCI Express Electrical Budgets...........................................................................60
PCI Express Link Topology.............................................................................60
PCI Express Insertion Loss.............................................................................61
PCI Express Jitter Budgets.............................................................................63
PCI Express Transmitter and Receiver Eye Diagrams........................................64
PCI Express Interface Skew...........................................................................68
PCI Express Equalization ...............................................................................68
System Requirements ................................................................................... 69
Display Requirements .......................................................................................69
Panel Type...................................................................................................69
LVDS Panel Power ........................................................................................69
VGA, TV_Out Impedance...............................................................................69
Output Filters...............................................................................................69
Other Requirements..........................................................................................70
Video BIOS Expansion ROM...........................................................................70
MXM System Information ROM.......................................................................70
Power Throttling...........................................................................................70
AC/BATT#....................................................................................................71
SMBUS.........................................................................................................71
5 V Tolerance...............................................................................................72
DVI Detection Circuitry..................................................................................72
MXM Grounding............................................................................................72
Power Up Sequencing ...................................................................................72
SP-03493-002_v1.0 iv
November 20, 2007
Additional Function Support...........................................................................73
MXM Cooling Fan..........................................................................................74
MXM Environmental......................................................................................74