PCI express mini card electro-mechanical specification 1.2

PCI express mini card electro-mechanical specification 1.2
PCI Express®
Mini Card Electromechanical
Specification
Revision 1.2
October 26, 2007
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REV 1.2
Revision
Revision History
Date
1.0
Initial release.
6/2/2003
1.1
Incorporated approved Errata and ECNs.
3/28/2003
1.2
Incorporated approved ECNs.
10/26/2007
PCI-SIG disclaims all warranties and liability for the use of this document and the information
contained herein and assumes no responsibility for any errors that may appear in this document, nor
does the PCI-SIG make a commitment to update the information contained herein.
Contact the PCI-SIG office to obtain the latest revision of the specification.
Membership Services
www.pcisig.com
E-mail: [email protected]
Phone: 503-619-0569
Fax: 503-644-6708
Technical Support
[email protected]
DISCLAIMER
This PCI Express Mini Card Electromechanical Specification is provided "as is" with no
warranties whatsoever, including any warranty of merchantability, noninfringement, fitness
for any particular purpose, or any warranty otherwise arising out of any proposal,
specification, or sample. PCI-SIG disclaims all liability for infringement of proprietary
rights, relating to use of information in this specification. No license, express or implied, by
estoppel or otherwise, to any intellectual property rights is granted herein.
PCI, PCI Express, PCIe, and PCI-SIG are trademarks or registered trademarks of PCI-SIG.
All other product names are trademarks, registered trademarks, or service marks of their respective
owners.
Copyright © 2003, 2005, 2007 PCI-SIG
2
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REV 1.2
Contents
1.
INTRODUCTION ...................................................................................................................7
1.1.
1.2.
1.3.
1.4.
2.
OVERVIEW ................................................................................................................... 7
SPECIFICATION REFERENCES........................................................................................ 9
TARGETED APPLICATIONS ........................................................................................... 9
FEATURES AND BENEFITS .......................................................................................... 10
MECHANICAL SPECIFICATION ......................................................................................11
2.1.
OVERVIEW ................................................................................................................. 11
2.2.
CARD SPECIFICATIONS ............................................................................................... 11
2.2.1. Card Form Factor..................................................................................................... 12
2.2.2. Card and Socket Types.............................................................................................. 13
2.2.3. Card PCB Details ..................................................................................................... 14
2.3.
SYSTEM CONNECTOR SPECIFICATIONS....................................................................... 21
2.3.1. System Connector...................................................................................................... 21
2.3.2. System Connector Parametric Specifications ........................................................... 21
2.4.
I/O CONNECTOR AREA .............................................................................................. 23
2.5.
RECOMMENDED SOCKET CONFIGURATIONS............................................................... 23
2.5.1. Single-Use Full-Mini and Half-Mini Sockets ........................................................... 23
2.5.2. Dual-Use Sockets ...................................................................................................... 26
2.5.3. Dual Head-to-Head Sockets ..................................................................................... 29
2.5.4. Side-by-Side Socket Spacing ..................................................................................... 32
2.6.
THERMAL GUIDELINES............................................................................................... 32
2.6.1. Thermal Design Definitions ...................................................................................... 32
2.6.2. Thermal Guidelines for PCI Express Mini Card Add-in Card Designers................ 33
2.6.2.1. Implementation Considerations ........................................................................ 34
2.6.3. Thermal Guidelines for Integrating Wireless Wide Area Network Mini Card Add-in
Cards......................................................................................................................... 35
3.
ELECTRICAL SPECIFICATIONS ......................................................................................39
3.1.
OVERVIEW ................................................................................................................. 39
3.2.
SYSTEM INTERFACE SIGNALS..................................................................................... 39
3.2.1. Power Sources and Grounds .................................................................................... 41
3.2.2. PCI Express Interface ............................................................................................... 41
3.2.3. USB Interface............................................................................................................ 42
3.2.4. Auxiliary Signals ....................................................................................................... 42
3.2.4.1. Reference Clock................................................................................................ 42
3.2.4.2. CLKREQ# Signal ............................................................................................. 42
3.2.4.3. PERST# Signal ................................................................................................. 46
3.2.4.4. WAKE# Signal ................................................................................................. 46
3.2.4.5. SMBus............................................................................................................... 46
3.2.5. Communications Specific Signals ............................................................................. 47
3.2.5.1. Status Indicators................................................................................................ 47
3.2.5.2. W_DISABLE# Signal....................................................................................... 48
3
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
3.2.6. User Identity Module (UIM) Interface...................................................................... 49
3.2.6.1. UIM_PWR ........................................................................................................ 49
3.2.6.2. UIM_RESET..................................................................................................... 49
3.2.6.3. UIM_CLK......................................................................................................... 49
3.2.6.4. UIM_VPP ......................................................................................................... 49
3.2.6.5. UIM_DATA...................................................................................................... 50
3.3.
CONNECTOR PIN-OUT DEFINITIONS ........................................................................... 50
3.3.1. Grounds..................................................................................................................... 51
3.3.2. Coexistence Pins ....................................................................................................... 51
3.3.3. Reserved Pins............................................................................................................ 51
3.4.
ELECTRICAL REQUIREMENTS ..................................................................................... 52
3.4.1. Logic Signal Requirements ....................................................................................... 52
3.4.2. Digital Interfaces ...................................................................................................... 52
3.4.3. Power ........................................................................................................................ 55
3.5.
CARD ENUMERATION ................................................................................................. 55
A.
SUPPLEMENTAL GUIDELINES FOR PCI EXPRESS MINI CARD CONNECTOR
TESTING ...............................................................................................................................57
A.1.
A.1.1.
A.1.2.
A.2.
A.3.
A.4.
B.
I/O CONNECTOR GUIDELINES ........................................................................................63
B.1.
B.2.
B.3.
4
TEST BOARDS ASSEMBLY .......................................................................................... 57
Base Board Assembly................................................................................................ 58
Plug-in Cards Assembly............................................................................................ 59
INSERTION LOSS MEASUREMENT ............................................................................... 60
RETURN LOSS MEASUREMENT ................................................................................... 60
NEAR END CROSSTALK MEASUREMENT .................................................................... 60
WIRE-LINE MODEMS .................................................................................................. 63
IEEE 802.3 WIRED ETHERNET .................................................................................. 63
IEEE 802.11 WIRELESS ETHERNET ........................................................................... 63
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
Figures
FIGURE 1-1: PCI EXPRESS MINI CARD ADD-IN CARD INSTALLED IN A MOBILE PLATFORM........... 8
FIGURE 1-2: LOGICAL REPRESENTATION OF THE PCI EXPRESS MINI CARD SPECIFICATION ........... 8
FIGURE 2-1: FULL-MINI CARD FORM FACTOR (MODEM EXAMPLE APPLICATION SHOWN) .......... 12
FIGURE 2-2: HALF-MINI CARD FORM FACTOR (WIRELESS EXAMPLE APPLICATION SHOWN) ...... 13
FIGURE 2-3: FULL-MINI CARD TOP AND BOTTOM ........................................................................ 15
FIGURE 2-4: HALF-MINI CARD TOP AND BOTTOM ....................................................................... 16
FIGURE 2-5: CARD TOP AND BOTTOM DETAILS A AND B............................................................. 17
FIGURE 2-6: CARD EDGE .............................................................................................................. 18
FIGURE 2-7: CARD COMPONENT KEEP OUT AREAS FOR FULL-MINI CARDS ................................. 19
FIGURE 2-8: CARD COMPONENT KEEP OUT AREAS FOR HALF-MINI CARDS ................................ 20
FIGURE 2-9: PCI EXPRESS MINI CARD SYSTEM CONNECTOR ....................................................... 21
FIGURE 2-10: I/O CONNECTOR LOCATION AREAS ........................................................................ 23
FIGURE 2-11: RECOMMENDED SYSTEM BOARD LAYOUT FOR FULL-MINI-ONLY SOCKET ............ 24
FIGURE 2-12: RECOMMENDED SYSTEM BOARD LAYOUT FOR HALF-MINI-ONLY SOCKET ........... 25
FIGURE 2-13: RECOMMENDED SYSTEM BOARD LAYOUT (DETAIL D) .......................................... 26
FIGURE 2-14: DUAL-USE SOCKET ................................................................................................ 27
FIGURE 2-15: RECOMMENDED SYSTEM BOARD LAYOUT FOR DUAL-USE SOCKET ....................... 28
FIGURE 2-16: DUAL HEAD-TO-HEAD SOCKET .............................................................................. 30
FIGURE 2-17: RECOMMENDED SYSTEM BOARD LAYOUT FOR DUAL HEAD-TO-HEAD SOCKETS... 31
FIGURE 2-18: RECOMMENDED SYSTEM BOARD LAYOUT (SIDE-BY-SIDE SPACING) ..................... 32
FIGURE 2-19: POWER DENSITY UNIFORM LOADING AT 80 PERCENT COVERAGE ......................... 34
FIGURE 3-1: POWER-UP CLKREQ# TIMING ................................................................................ 44
FIGURE 3-2: CLKREQ# CLOCK CONTROL TIMINGS .................................................................... 45
Tables
TABLE 2-1:
TABLE 2-2:
TABLE 2-3:
TABLE 2-4:
TABLE 2-5:
TABLE 2-6:
TABLE 3-1:
TABLE 3-2:
TABLE 3-3:
TABLE 3-4:
TABLE 3-5:
TABLE 3-6:
TABLE 3-7:
TABLE 3-8:
TABLE 3-9:
CARD AND SOCKET TYPES CROSS-COMPATIBILITY ................................................... 14
SYSTEM CONNECTOR PHYSICAL REQUIREMENTS ...................................................... 21
SYSTEM CONNECTOR MECHANICAL PERFORMANCE REQUIREMENTS ........................ 22
SYSTEM CONNECTOR ELECTRICAL PERFORMANCE REQUIREMENTS .......................... 22
SYSTEM CONNECTOR ENVIRONMENTAL PERFORMANCE REQUIREMENTS .................. 22
MAXIMUM TDP ......................................................................................................... 35
PCI EXPRESS MINI CARD SYSTEM INTERFACE SIGNALS............................................ 39
POWER-UP CLKREQ# TIMINGS................................................................................ 44
CLKREQ# CLOCK CONTROL TIMINGS ..................................................................... 45
SIMPLE INDICATOR PROTOCOL FOR LED STATES ...................................................... 47
RADIO OPERATIONAL STATES.................................................................................... 48
SYSTEM CONNECTOR PIN-OUT................................................................................... 50
DC SPECIFICATION FOR 3.3V LOGIC SIGNALING ....................................................... 52
SIGNAL INTEGRITY REQUIREMENTS AND TEST PROCEDURES .................................... 53
POWER RATINGS ........................................................................................................ 55
5
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
6
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
1
1.
1.1.
5
10
15
Introduction
Overview
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.
The primary differences between a PCI Express add-in card (as defined by the PCI Express Card
Electromechanical Specification) and a PCI Express Mini Card add-in card is a unique card form factor
optimized for mobile computing platforms and a card-system interconnection optimized for
communication applications. Specifically, PCI Express Mini Card add-in cards are smaller and have
smaller connectors than standard PCI Express add-in cards.
Figure 1-1 shows a conceptual drawing of this form factor as it may be installed in a mobile
platform. Figure 1-1 does not reflect the actual dimensions and physical characteristics as those
details are specified elsewhere in this specification. However, it is representative of the general
concept of this specification to use a single system connector to support all necessary system
interfaces by means of a common edge connector. Communications media interfaces may be
provided via separate I/O connectors and RF connectors each with independent cables as illustrated
in Figure 1-1.
7
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
A-0381
Figure 1-1: PCI Express Mini Card Add-in Card Installed in a Mobile Platform
PCI Express Mini Card supports two primary system bus interfaces: PCI Express and USB as
shown in Figure 1-2.
PCI Express Mini Card
System Buses
PCI
Express
USB
Modem
PCI Express Mini Card
Communication-centric
Function
FunctionSpecific
Connector
Ethernet
Wireless
LEDs
System
Interface
Function
I/O
Interface
A-0339A
Figure 1-2: Logical Representation of the PCI Express Mini Card Specification
8
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
1.2.
Specification References
This specification requires references to other specifications or documents that will form the basis
for some of the requirements stated herein.
PCI Express Base Specification, Revision 1.1
5
PCI Express Card Electromechanical Specification, Revision 1.1
PCI Local Bus Specification, Revision 2.3
Mini PCI Specification, Revision 1.0
PCI Bus Power Management Interface Specification, Revision 1.2
Advanced Configuration and Power Interface Specification, Revision 2.0b
10
Universal Serial Bus Specification, Revision 2.0
SMBus Specification, Revision 2.0
EIA-364-1000.01: Environmental Test Methodology for Assessing the Performance of Electrical Connectors
and Sockets Used in Business Office Applications
EIA-364: Electrical Connector/Socket Test Procedures Including Environmental Classifications
15
IS0/IEC 7816-2, 2007, Identification Cards – Integrated Circuit Cards – Part 2: Cards with Contacts –
Dimensions and Location of the Contacts
IS0/IEC 7816-3, 2006, Identification Cards – Integrated Circuit Cards – Part 3: Cards with Contacts –
Electrical Interface and Transmission Protocols
1.3.
20
Targeted Applications
Although the PCI Express Mini Card is originally intended for both wired and wireless
communication applications, it is not limited to such applications. Communications-specific
applications may include:
Wired data communication:
Local Area Network (LAN): 10/100/1000 Mbps Ethernet
25
Wide Area Network (WAN): V.90/V.92 modem
Wireless data communication:
Wireless-LAN (W-LAN): 802.11b/g/a (2.4 GHz and 5.2 GHz bands)
Wireless-WAN (W-WAN): Cellular data (e.g., GSM/GPRS, UMTS, and CDMA-2000)
Wireless-Personal Area Network (W-PAN): Bluetooth
30
PCI Express Mini Card is targeted toward addressing system manufacturers’ needs for build-toorder and configure-to-order rather than providing a general end-user-replaceable module. In
specific applications such as wireless, there are worldwide regulatory implications in providing enduser access to items such as antenna connections and frequency-determining components. It is up
9
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
to the system manufacturer to limit access to appropriate trained service personnel and provide such
notification to the user.
5
Although not specifically considered, other applications that may also find their way to this form
factor include advanced wired WAN technologies (xDSL and cable modem), location services using
GPS, and audio functions.
1.4.
Features and Benefits
The performance characteristics of PCI Express make PCI Express Mini Card add-in cards desirable
in a wide range of mobile systems. This mobile computer optimized form factor provides a number
of benefits, including:
Upgradeability – PCI Express Mini Card add-in cards are removable and upgradeable with
available “new technology” cards. This allows upgrades to the newest technologies. System
manufacturers are responsible for providing sufficient notification in the accompanying manual
when a qualified technician should perform the upgrade service.
10
Flexibility – A single PCI Express Mini Card interface can accommodate various types of
communications devices. Therefore, the OEM manufacturer can supply build-to-order systems
(for example, a network interface card instead of a modem or Token Ring instead of Ethernet).
15
Reduced Cost – A standard form factor for small form factor add-in cards makes them more
manufacturable, which may lead to reduced costs and provide an economy-of-scale advantage
over custom manufactured form factors.
Serviceability – PCI Express Mini Card add-in cards can be removed and easily serviced if they
fail.
20
Reliability – PCI Express Mini Card add-in cards will be mass-produced cards with higher
quality than low-volume custom boards.
Software Compatibility – PCI Express Mini Card add-in cards are intended to be fully
compatible with software drivers and applications that will be developed for standard PCI
Express add-in cards.
25
Reduced Size – PCI Express Mini Card add-in cards are smaller than PC Cards, PCI Express
add-in cards, Mini PCI add-in cards, and other add-in card form factors. This reduced size
permits a higher level of integration of data communications devices into notebook PCs.
Regulatory Agency Accepted Form Factor – Standardization of the PCI Express Mini Card
form factor will permit world wide regulatory agencies to approve PCI Express Mini Card
communications devices independent of the system. This significantly reduces cost and risk on
the part of systems manufacturers.
30
Power Management – PCI Express Mini Card is designed to be truly mobile friendly for
current and future mobile specific power management features.
35
10
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
2
2.
Mechanical Specification
2.1.
5
10
Overview
This specification defines two small form factor cards for systems in which a PCI Express add-in
card cannot be used due to mechanical system design constraints. The specification defines smaller
cards based on a single 52-pin card-edge type connector for system interfaces. The specification
also defines the PCI Express Mini Card system board connector. In this document Mini Card refers
to either form-factor. As the two form-factors primarily differ in length, they will be individually
identified as the Full-Mini Card and the Half-Mini Card for the full length and half-length versions of
the cards, respectively.
2.2.
Card Specifications
There are two PCI Express Mini Card add-in card sizes: Full-Mini Card and Half-Mini Card.
For purposes of the drawings in this specification, the following notes apply:
All dimensions are in millimeters, unless otherwise specified.
All dimension tolerances are ± 0.15 mm, unless otherwise specified.
15
Dimensions marked with an asterisk (*) are overall envelope dimensions and include space
allowances for insulation to comply with regulatory and safety requirements.
Insulating material shall not interfere with or obstruct mounting holes or grounding pads.
11
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
2.2.1.
Card Form Factor
The card form factors are specified by Figure 2-1 and Figure 2-2. These figures illustrate example
applications. The hatched areas shown in these figures represent the available component volume
for the card’s circuitry.
2.6 +0/-0.10
30.0 REF
PIN 1
56.05 REF
System
Board
5.00 REF
A-0340
Figure 2-1: Full-Mini Card Form Factor (Modem Example Application Shown)
12
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
2.6 +0/-0.10
30.0 REF
31.90 REF
System
Board
5.00 REF
A-0729
Figure 2-2: Half-Mini Card Form Factor (Wireless Example Application Shown)
2.2.2.
Card and Socket Types
Given the multiple card sizes defined for Mini Card, host platforms have options with regard to
socket configurations implemented to support each of the card sizes and potentially the mixing of
the two card sizes within a common socket arrangement.
5
10
15
Single socket arrangements include those specific to Full-Mini Card (F1) and Half-Mini Card (H1)
only usages. These sockets specifically have the card retention features for only one size card and
are further defined in Section 2.5.1.
Additionally, a single socket that optionally supports either a Full-Mini Card (F2) or a Half-Mini
Card (H1 or H2) is possible to implement, this type being referred to as a dual-use socket and
supports card retention for both size cards. See Section 2.5.2 for more details on this socket
definition.
A dual head-to-head socket is defined as an optional way to incorporate two socket connectors
(identified as A and B) into a space that most closely replaces a single Full-Mini socket. This
arrangement offers the choice of installing two Half-Mini Cards (one of which has to be a H2 type)
or one Full-Mini Card (F2) enabling some additional flexibility for a selection of BTO options. See
Section 2.5.3for more details on this socket definition.
Table 2-1 defines cross-compatibility for a series of defined card and socket types. It is important to
notice that the dual head-to-head socket arrangement has special limitations with regard to card
compatibility.
13
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
Table 2-1: Card and Socket Types Cross-Compatibility
Card Types
Full-MiniOnly
Socket*
Half-MiniOnly
Socket
Dual-Use
Socket
Dual Head-to-Head Socket
Connector
Connector
Connector
Connector
Connector
A
A
A
A
B
F1
Full-Mini
Yes
No
No
No
No
F2
Full-Mini with
bottom-side
keep outs
Yes
No
Yes
Yes
No
H1
Half-Mini
No
Yes
Yes
Yes
No
H2
Half-Mini with
bottom-side
keep outs
No
Yes
Yes
Yes
Yes
1
* Equivalent to the original Mini Card defined card and socket in Revision 1.1 of this specification.
Mini Cards that were developed prior to this type definition are by default identified as Type F1.
Given that the existing design meets the bottom-side keep out definition for Type F2, then
subsequently identifying the product as Type F2 is acceptable.
5
2.2.3.
Card PCB Details
Figure 2-3, Figure 2-4, Figure 2-5, and Figure 2-6 provide the printed circuit board (PCB) details
required to fabricate the card. The PCB for this application is expected to be 1.0 mm thick.
14
50.95
+0.00/-0.30
48.05
See Detail A
Pin 1
8.25
C
A B C
Pin 51
of Card Width
3.85
1.65
Top Side
Ø0.10
2x Ø2.60 ± 0.10
24.20
0.10 M A B C
30.00 +0.00/-0.30
B
50.95
REF
25.70
C
Pin 2
Both Sides
5.60
0.10 M A B C
See Detail B
13.60
Both Sides
Pin 52
2.05
Bottom Side
8.25
Pin numbering reference:
Odd pins – Top Side
Even pins – Bottom Side
2x 3.20 MIN
2x R 0.80 MAX
2x 2.15 REF
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
A-0341A
Figure 2-3: Full-Mini Card Top and Bottom
15
16
26.80
+0.00/-0.30
23.90
See Detail A
Pin 1
8.25
C
A B C
Pin 51
of Card Width
3.85
1.65
Top Side
Ø0.10
2x Ø2.60 ± 0.10
24.20
0.10 M A B C
30.00 +0.00/-0.30
B
26.80
REF
25.70
C
Pin 2
Both Sides
5.60
8.25
0.10 M A B C
See Detail B
13.60
Both Sides
Pin 52
2.05
Bottom Side
Pin numbering reference:
Odd pins – Top Side
Even pins – Bottom Side
2x 3.20 MIN
2x R 0.80 MAX
2x 2.15 REF
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
A-0728
Figure 2-4: Half-Mini Card Top and Bottom
1.50 ± 0.10
4.00 ± 0.10
Datum C
Full R
4.00
Detail A
(Top Side)
C
1.65
0.80
0.25 MAX
2.55 ± 0.05
TYP
0.10 L A B C
0.05
A
0.60 ± 0.05 TYP
2.05
C
Detail B
(Bottom Side)
4.00
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
A-0342A
Figure 2-5: Card Top and Bottom Details A and B
17
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
2.4 MAX
1.35 MAX
Hatched areas illustrate maximum
available component volume.
Notes:
1
Card thickness applies across
tabs and includes plating
and/or metallization.
2
Edge bevel must be present
and free of cutting burrs from
PCB and contact materials.
A
1.00 ± 0.10
45˚ ± 7˚
1
2
0.25 MAX
Detail B
A-0343B
Figure 2-6: Card Edge
Figure 2-7 and Figure 2-8 provide details regarding the component keep out areas on FullMini (Types F1 and F2) and Half-Mini Cards (Types H1 and H2), respectively.
18
3.20 MIN
2x 5.80
Top Side
(Types F1 and F2)
4.20
Top Side
2x 5.80
Component keep out
area for connector
5.10 MIN
Bottom Side
(Type F1)
Bottom Side
Component and routing (all layers)
keep out area for hold down solutions
5.10 MIN
4x 5.80
Bottom Side
(Type F2)
Component and exposed routing
(bottom layer) keep out
for hold down solutions
4x 1.70 MAX
4x 5.80
Bottom Side
4x
1.70 MAX
23.90
9.45
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
A-0727
Figure 2-7: Card Component Keep Out Areas for Full-Mini Cards
19
20
3.20 MIN
2x 5.80
2x 1.70 MAX
Top Side
(Types H1 and H2)
4.20
Top Side
2x 1.70 MAX
2x 5.80
Component keep out
area for connector
Bottom Side
(Type H1)
Bottom Side
Component and routing (all layers)
keep out area for hold down solutions
5.10 MIN
2x 5.80
Bottom Side
(Type H2)
Component and exposed routing (bottom layer)
keep out area for hold down solutions
2x 5.80
4x
1.70 MAX
Bottom Side
4x
1.70 MAX
9.00
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
A-0730
Figure 2-8: Card Component Keep Out Areas for Half-Mini Cards
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
2.3.
System Connector Specifications
The PCI Express Mini Card system connector is similar to the SO-DIMM connector and is modeled
after the Mini PCI Type III connector without side retaining clips.
5
Note: All dimensions are in millimeters, unless otherwise specified. All dimension tolerances are
± 0.15 mm, unless otherwise specified.
2.3.1.
System Connector
The system connector is 52-pin card edge type connector. Detailed dimensions should be obtained
from the connector manufacturer. Figure 2-9 shows the system connector.
1
2.05 REF
3.20 MAX
5.10 MAX
B
11.15
MAX
5.00
MAX
18.85
MAX
1
5.10 MAX
Depth of card slot and orientation post
centerlines must be aligned by ± 0.05.
A-0345A
Figure 2-9: PCI Express Mini Card System Connector
2.3.2.
10
System Connector Parametric Specifications
Table 2-2, Table 2-3, Table 2-4, and Table 2-5 specify the requirements for physical, mechanical,
electrical, and environmental performance for the system connector.
Table 2-2: System Connector Physical Requirements
Parameter
Specification
U.L. rated 94-V-1 (minimum)
Connector Housing
Must be compatible with lead-free
soldering process
Contacts: Receptacle
Copper alloy
Contact Finish: Receptacle
Must be compatible with lead-free
soldering process
21
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
Table 2-3: System Connector Mechanical Performance Requirements
Parameter
Specification
Durability
EIA-364-9
50 cycles
Total mating/unmating force*
EIA-364-13
2.3 kgf maximum
Shock
EIA-364-27, Test condition A
Add to EIA-364-1000 test group 3 with
LLCR before vibration sequence.
Note: Shock specifications assume that an
effective card retention feature is used.
* Card mating/unmating sequence:
1. Insert the card at the angle specified by the manufacturer.
2. Rotate the card into position.
3. Reverse the installation sequence to unmate.
Table 2-4: System Connector Electrical Performance Requirements
Parameter
Specification
Low Level Contact Resistance
EIA-364-23
55 mΩ maximum (initial) per contact;
20 mΩ maximum change allowed
Insulation Resistance
EIA-364-21
> 5 x 108 @ 500 V DC
Dielectric Withstanding Voltage
EIA-364-20
> 300 V AC (RMS) @ sea level
0.50 A/power contact (continuous)
The temperature rise above ambient shall
not exceed 30 °C. The ambient condition
is still air at 25 °C.
Current Rating
EIA-364-70 method 2
Voltage Rating
50 V AC per contact
Table 2-5: System Connector Environmental Performance Requirements
Parameter
5
Specification
Operating Temperature
-40 °C to +80 °C
Environmental Test Methodology
EIA-364-1000.01
Test Group, 1, 2, 3, and 4
Useful Field Life
5 years
To ensure that the environmental tests measure the stability of the connector, the add-in cards used
shall have edge finger tabs with a minimum plating thickness of 30 micro-inches of gold over
50 micro-inches of nickel (for environmental test purposes only). Furthermore, it is highly desirable
that testing gives an indication of the stability of the connector when add-in cards at the lower and
22
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
upper limit of the card thickness requirement are used. In any case, both the edge tab plating
thickness and the card thickness shall be recorded in the environmental test report.
2.4.
5
10
I/O Connector Area
The placement of I/O connectors on a PCI Express Mini Card add-in card is recommended to be at
the end opposite of the system connector as shown in Figure 2-10. The recommended area applies
to both sides of the card, though typical placement will be on the top of the card due to the
additional height available. Depending on the application, one or more connectors may be required
to provide for cabled access between the card and media interfaces such as LAN and modem line
interfaces and/or RF antennas. This area is not restricted to I/O connectors only and can be used
for circuitry if not needed for connectors.
2x 8.00
I/O
Connector Area
A-0349A
Figure 2-10: I/O Connector Location Areas
2.5.
Recommended Socket Configurations
The following subsections address various recommended footprints for the system connector
covering single-use sockets, dual-use sockets and multi-socket configurations.
2.5.1.
15
Single-Use Full-Mini and Half-Mini Sockets
Figure 2-11, Figure 2-12, and Figure 2-13 show the recommended system board layouts for singleuse sockets.
23
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
24.60
2x 5.80
0.15 D E
0.40
2x 5.80
0.15 D E
Component keep out area
for card hold down solution
48.05
Datum E
8.65
REF
of inserted card key
25.00
10.70
17 spaces
at 0.80 =
13.60
See detail D
3
0.70 REF
Ø 1.10 ± 0.05 2
Ø 0.15 D E
2x 3.50
2x 3.20
0.20 L D E
10.30
2x 2.30
0.20 L D E
27.15
2.15
C
Notes:
1
Datum D is the top surface of PCB.
2
The horizontal axis for the pattern
is established by a line through the
center of the Ø 1.60 and Ø 1.10
holes. The vertical axis is 90˚ to
the horizontal axis, through the
center of datum E.
3
Location of inserted card edge is
aligned with of holes.
A-0346A
Figure 2-11: Recommended System Board Layout for Full-Mini-Only Socket
24
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
24.60
2x 5.80
0.15 D E
0.40
Component keep
out area for card
hold down solution
2x 1.70 MIN
Datum E
2x
1.70 MIN
of inserted card key
8.65
REF
25.00
23.90
See detail D
2x 5.80
0.15 D E
17 spaces
at 0.80 =
13.60
10.70
3
0.70 REF
Ø 1.10 ± 0.05 2
Ø 0.15 D E
2x 3.50
2x 3.20
0.20 L D E
10.30
2x 2.30
0.20 L D E
27.15
2.15
C
Notes:
1
Datum D is the top surface of PCB.
2
The horizontal axis for the pattern
is established by a line through the
center of the Ø 1.60 and Ø 1.10
holes. The vertical axis is 90˚ to
the horizontal axis, through the
center of datum E.
3
Location of inserted card edge is
aligned with of holes.
A-0731
Figure 2-12: Recommended System Board Layout for Half-Mini-Only Socket
25
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
7 spaces
at 0.80 =
5.60
Pin 2
0.80 TYP
1.10
Ø 1.60 ± 0.05
0.40 REF
E
4.10
3.10 REF
3.10 REF
Pin 1
4.10
2.00 ± 0.10 TYP
0.60 ± 0.05 TYP
0.20 L D E
0.10 L D E
0.05 D
0.70
A-0347
Figure 2-13: Recommended System Board Layout (Detail D)
2.5.2.
5
Dual-Use Sockets
Figure 2-14 illustrates the concept of a dual-use socket that can accept either a Full-Mini Card or a
Half-Mini Card. This socket differs from the Full-Mini-only socket in that consideration is given to
support hold down support for the installation of a Half-Mini Card into the same socket. All Mini
Cards with the exception of the Type F1 Full-Mini Card are compatible with this socket.
Figure 2-15 shows the recommended system board layout for the dual-use socket.
26
56.05
5.10
Dual-Use Socket
with no Mini Cards installed
Connector A
23.90
48.05
Half-Mini Card installed
Connector A
Half-Mini Card
Full-Mini Card installed
Connector A
Full-Mini Card
(Type F2)
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
A-0725
Figure 2-14: Dual-Use Socket
27
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
24.60
4x 5.80
0.15 D E
0.40
Component keep
out area for card
hold down solution
4x 5.80
0.15 D E
Datum E
48.05
2x 1.70 MIN
2x 1.70 MIN
8.65
REF
of inserted card key
25.00
See detail D
23.90
17 spaces
at 0.80 =
13.60
10.70
3
0.70 REF
Ø 1.10 ± 0.05 2
2x 3.50
Ø 0.15 D E
2x 3.20
0.20 L D E
10.30
2x 2.30
0.20 L D E
27.15
2.15
C
Notes:
1
Datum D is the top surface of PCB.
2
The horizontal axis for the pattern
is established by a line through the
center of the Ø 1.60 and Ø 1.10
holes. The vertical axis is 90˚ to
the horizontal axis, through the
center of datum E.
3
Location of inserted card edge is
aligned with of holes.
A-0726
Figure 2-15: Recommended System Board Layout for Dual-Use Socket
28
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
2.5.3.
5
10
Dual Head-to-Head Sockets
Figure 2-16 illustrates the concept of a dual head-to-head socket configuration. This optional
configuration defines a two connector (A and B) solution that is intended to allow installation for
either one Full-Mini Card or two Half-Mini Cards. Figure 2-17shows the recommended system
board layout for this configuration based on overlaying the defined dual-use and Half-Mini-only
sockets (see Figure 2-12 and Figure 2-15 for additional dimensional details).
It is important to note the limitations regarding card compatibility with this socket configuration.
Connector A can accept all but the Type F1 Full-Mini Card. Connector B can only accept Type H2
Half-Mini Cards. When using two Half-Mini Cards in this configuration, care must be taken that at
least one of those cards be Type H2.
29
30
67.25
5.10
1.00
10.20
Figure 2-16: Dual Head-to-Head Socket
Dual Head-to-Head Socket
with no Mini Cards installed
Connector A
3.45
23.90
9.25
23.90
Connector B
(only compatible with H2 cards)
48.05
Two Half-Mini Cards installed
Connector A
Half-Mini Card
(Type H1)
Half-Mini Card
(Type H2)
Connector B
(only compatible with H2 cards)
One Full-Mini Card installed
Connector A
Full-Mini Card
(Type F2)
Connector B
(unused)
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
A-0724
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
Position of
Connector B
Note 1
Footprint
based on
Half-Mini-only
Socket footprint
rotated 180˚
0.40
23.90
48.05
9.25
Footprint
based on
Dual-Use
Socket
footprint
0.40
23.90
24.60
Position of
Connector A
Note 1: The two keepout areas at the top of the Dual-Use Socket
footprint vary in this layout to match those defined for the bottom
side only keepouts for the Half-Mini Type H2.
A-0732
Figure 2-17: Recommended System Board Layout for Dual Head-to-Head Sockets
31
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
2.5.4.
Side-by-Side Socket Spacing
Figure 2-18 shows the recommendation for placing Mini Card sockets side-by-side on a system
board. This recommendation can be combined with any of the other system board
recommendations for increased flexibility in managing multiple cards in a single platform.
31.000
A-0348A
Figure 2-18: Recommended System Board Layout (Side-by-Side Spacing)
5
2.6.
Thermal Guidelines
The following thermal guidelines are intended to provide guidance to both system board designers
and PCI Express Mini Card add-in card designers.
2.6.1.
10
15
Thermal Design Definitions
The Thermal Design Power (TDP) is the steady state electrical power that is converted to heat and
dissipated by a card or any heat source. The TDP is less than the electrical power and as an example
could be the electrical power minus the radiated power in a wireless radio.
Steady state is defined as the operational application profile that represents the normal use scenario
for the product being specified. This might include a series of radio transmissions and receptions
occurring at a regular interval that is representative of actual use within normal bounds for the
network being used. A maximum TDP would be based on a steady state condition associated with
the scenario that dissipates the maximum average power.
A thermal guideline is a non-normative technical discussion or objective that could be used to describe
the design or the conditions in which it operates.
32
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
5
In cases where either the system board or PCI Express Mini Card add-in card does not strictly
follow the guidelines a coordinated solution between the card and the host platform vendor is
dictated. Solutions might be able to manage higher thermals by implementing features that may
include passive (e.g., thermal insulation, thermal spreading) and active (e.g., thermal-based throttling)
techniques. Such techniques are not comprehended by this specification.
2.6.2.
Thermal Guidelines for PCI Express Mini Card
Add-in Card Designers
This section provides guidelines for PCI Express Mini Card add-in card designers to follow to
assure compatibility with host systems.
10
For purposes of this specification, power consumption is not necessarily directly related to the
thermal dissipation limitations within the system; e.g., additional power may be consumed via the
system interface, yet the thermal energy may be dissipated in circuits located off the card (most likely
in a remote media interface circuit such as an antenna). Power consumption limits for PCI Express
Mini Card are included in Chapter 3.
15
System Board Requirements:
System board designers shall ensure that the board can dissipate 28.1 °C/W in the region of the
add-in card. The method in which this is dissipated depends on the OEM standards, but natural
convection/radiation is unlikely. Most applications will require some air flow over the add-in
card.
20
Direct attach thermal solutions are not allowed.
Add-In Card Requirements:
The maximum thermal dissipation directly from any PCI Express Mini Card add-in card is 2.3 W
at a component temperature of 90 °C and 65 °C ambient temperature inside the host and
around the add-in card.
25
De-rate maximum card power 0.046 W for every 1 °C component TCASE is rated below 90 °C.
Example: TCASE = 85 °C, then de-rate power 0.23 W to P = 2.07 W.
30
The total thermal energy dissipated must be spread out relatively uniformly over the PCI
Express Mini Card add-in card in order to avoid hot spots. Figure 2-19 provides guidance on
power density. The top side of the card can generally tolerate as much as twice the density as
the bottom side of the card, with the components on the bottom side being trapped between the
add-in card PCB and the system board PCB.
33
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
0.1
Bottom Side (W/cm2)
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0
0.095
0.115
0.135
0.155
0.175
0.195
0.215
Top Side (W/cm2)
A-0350A
Figure 2-19: Power Density Uniform Loading at 80 Percent Coverage
Example: If side one of the card is loaded to 0.12 W/cm2, the other side of the card (side two) can
only be loaded to 0.07 W/cm2. In all cases, the sum of power densities for both sides of the card
should not exceed 0.19 W/cm2.
5
10
Note: Additional heat beyond the maximum 2.3 W of thermal dissipation, listed on page 33 as a
requirement for an add-in card, may be generated by the PCI Express Mini Card add-in card's I/O
circuitry. For example, for certain modem line conditions in the approved countries, TBR21 states a
modem may dissipate as much as an additional 2.4 W (40-V drop at 60 mA). If the add-in card
requires additional thermal management in order to stay within the aforementioned criteria, the addin card manufacturer must coordinate with the system board manufacturer to achieve a final
solution.
2.6.2.1.
Implementation Considerations
The following points should be considered when developing a PCI Express Mini Card add-in card’s
thermal design.
It is accepted that some host platform designs may be designed to support higher TDP limits
and, if so, this should be noted by the vendor as a capability beyond the basic assumptions made
in establishing the guidelines in this specification.
15
The component temperature of 90 °C is an ergonomic requirement so that the customer is not
discomforted by the temperature of the PCI Express Mini Card add-in card when using the
computer. The 90 °C component temperature is meant to assure that no greater than a 65 °C
skin temperature is experienced when touching the exterior of the host device. UL 60950-1
temperature limits could also be considered.
20
The card’s TDP should be spread out relatively uniformly over the assembly. Higher TDP
components should not be co-located.
The host platform encloses the card thermally with no forced convection and no predictable or
well-defined natural convection air buoyancy path.
25
34
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
Thermal impact of card materials should be considered for temperature rise and for allowable
touch temperature.
The card PCB may need thermal vias to help conduction and heat spreading for high TDP
components.
5
The maximum ambient rating for the card may be determined by measuring the card surface
temperature when installed in the host unpowered.
2.6.3.
10
Thermal Guidelines for Integrating Wireless Wide
Area Network Mini Card Add-in Cards
This section provides guidelines for host system board designers to follow to assure compatibility
with Wireless Wide Area Network (WWAN) PCI Express Mini Card add-in cards.
It is recommended that system board designers meet the following requirements:
15
For WWAN add-in cards, Thermal Dissipation = Electrical Input Power – Antenna Output
Power. For WWAN, thermal dissipation can be inferred by measuring electrical input power
and antenna output power. Another technique is to add up the maximum thermal dissipation
from all components from specification sheets or through measurements.
Design for the maximum TDP based upon the technology. The worst case WWAN add-in card
can dissipate up to 3.1 W of thermal energy as shown in Table 2-6.
Table 2-6: Maximum TDP
WWAN Technology
Maximum TDP
W-CDMA HSDPA 1900 @ 22 dBm
2.9 W – 3.1 W
W-CDMA HSDPA 850 @ 22 dBm
2.8 W – 3.0 W
W-CDMA HSDPA 2100 @ 22 dBm
2.7 W – 2.7 W
CDMA 2000 1xEVDO @ 24 dBm
2.7 W – 2.9 W
GPRS Class 10 @ 32 dBm
1.8 W
Design to a maximum component surface temperature of 85 °C. Components in a WWAN
add-in card typically have a maximum surface temperature of 85 °C.
20
WWAN add-in cards must operate within their product specification. Power amplifiers are the
main heat generators.
Temperature delta from host to WWAN device at reference PCB area:
● 0 °C – 20 °C (WWAN idle)
● 20 °C – 40 °C (WWAN active, still air)
25
Temperature delta between PA and reference PCB area:
● 20 °C – 30 °C (WWAN active)
35
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
The WWAN add-in card temperature profile depends on host cooling approach including:
● Natural convection
● Forced air
● Direct attach
Location of “heat sources” near the WWAN add-in card can negatively impact the thermal
design. Do not place the add-in card near other host heat sources or “down wind” from such
heat sources.
5
● Host CPU’s and graphics cards are both heat (and noise) sources.
Inadequate cooling may cause the WWAN add-in card to overheat:
● WWAN devices monitor internal temperature to ensure RF performance will be met over
target temperature range.
10
● Required for FCC compliance on Transmitter.
● Overheated modules may have shortened lifespan (field returns).
To be conservative, the thermal design of the system board must consider the TDP of the
worst-case operating mode of the WWAN add-in card. The worst case mode is when a WWAN
add-in card is sitting on the edge of a cell and continuously transmitting data. For example, this
may occur if a camera is attached to the host.
15
The WWAN add-in card typically does not operate in the worst-case operating mode. For
example, consider CDMA 2000 1xEVDO. The Maximum Thermal Dissipation varies based
upon the distance from the base station:
20
● Maximum Thermal Dissipation = 1.0 W (close to the base station)
● Maximum Thermal Dissipation = 1.8 W (middle of the cell)
● Maximum Thermal Dissipation = 2.7 W (edge of the cell)
These values are representative. Maximum input voltage is assumed.
The CDMA 2000 1xEVDO network is constantly sending power control bits to the WWAN
add-in card to control the output power. CDMA requires devices to transmit power at the
lowest possible level to provide reliable service across the cell.
25
CDMA 2000 1xEVDO devices go into a power save mode called dormancy on their own after
at least 20 seconds of data inactivity.
Dormant state:
30
● Average Thermal Dissipation: << 1 W
● Maximum Thermal Dissipation: < 1 W
The Average Thermal Dissipation is function of the user-level application that is running and
the distance from the base station. Most business applications enable the device to go dormant
thereby lowering the average thermal dissipation.
35
● Average Thermal Dissipation < Maximum Thermal Dissipation
36
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
Applications that perform data streaming such as VOIP, video streaming from an attached
camera or streaming audio prevent the device from going dormant.
● Average Thermal Dissipation = Max Thermal Dissipation
5
The host should support the USB Selective Suspend feature to reduce electrical power
consumption and thermal dissipation by the WWAN add-in card.
System board designers must consider WWAN in their platform thermal design from the
beginning. It is difficult to retrofit WWAN in existing platforms.
37
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
38
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
3
3.
Electrical Specifications
3.1.
Overview
This chapter covers the electrical specifications for PCI Express Mini Card.
3.2.
5
10
System Interface Signals
Table 3-1 summarizes the 26 signal and 18 power lines that are supported by the system interface.
Two primary data interfaces are defined for PCI Express Mini Card: PCI Express and USB. System
designers may optionally choose to implement slots that support only one of these interfaces and
still be compliant to this specification. As PCI Express Mini Card is targeted to BTO/CTO
applications, the proper matching of specific add-in cards to systems with the matching data
interface has to be managed by the system integrator.
Table 3-1: PCI Express Mini Card System Interface Signals
Signal Group
Power
Signal
Direction
+3.3Vaux (5 pins)
3.3 V source
+1.5V (3 pins)
1.5V source
GND (14 pins)
Return current path
PETp0, PETn0
PERp0, PERn0
Input/Output
PCI Express x1 data interface: one
differential transmit pair and one
differential receive pair
REFCLK+,
REFCLK–
Input
PCI Express differential reference
clock (100 MHz)
USB_D+,
USB_D–
Input/Output
USB serial data interface
compliant to the USB 2.0
specification
PCI Express
Universal Serial
Bus (USB)
Description
39
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
Signal Group
Signal
Direction
PERST#
Input
Functional reset to the card
CLKREQ#
Output
Reference clock request signal
WAKE#
Output
Open Drain active Low signal.
This signal is used to request that
the system return from a
sleep/suspended state to service a
function initiated wake event.
SMB_DATA
Input/Output
SMBus data signal compliant to
the SMBus 2.0 specification
SMB_CLK
Input
SMBus clock signal compliant to
the SMBus 2.0 specification
LED_WPAN#,
LED_WLAN#,
LED_WWAN#
Output
Open drain, active low signals.
These signals are used to allow
the PCI Express Mini Card add-in
card to provide status indicators
via LED devices that will be
provided by the system.
W_DISABLE#
Input
Active low signal. This signal is
used by the system to disable
radio operation on add-in cards
that implement radio frequency
applications.
Auxiliary Signals
(3.3V Compliant)
Communications
Specific Signals
Description
When implemented, this signal
requires a pull-up resistor on the
card.
UIM_PWR (1 pin)
Output
Power source for the UIM.
Compliant to the ISO/IEC 7816-3
specification (VCC).
UIM_RESET
Output
UIM reset signal.
Compliant to the ISO/IEC 7816-3
specification (RST).
UIM_CLK
User Identity
Module (UIM)
Signals
Output
UIM clock signal.
Compliant to the ISO/IEC 7816-3
specification (CLK).
UIM_VPP
Output
Variable supply voltage (e.g.,
programming voltage) for class A
devices. Refer to ISO/IEC 7816-3
for operating class definitions.
This signal is reserved for future
use for devices of other classes.
Compliant to the ISO/IEC 7816-3
specification (VPP).
UIM_DATA
Input/Output
UIM data signal.
Compliant to the ISO/IEC 7816-3
specification (I/O).
40
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
3.2.1.
5
PCI Express Mini Card provides two power sources: one at 3.3Vaux (3.3Vaux) and one at 1.5V
(+1.5V). The auxiliary voltage source, +3.3Vaux, may be the only supply voltage available during
the system’s stand-by/suspend state to support wake event processing on the communications card.
The 1.5V voltage source may or may not be present in the low power state.
3.2.2.
10
Power Sources and Grounds
PCI Express Interface
The PCI Express interface supports a x1 PCI Express interface (one Lane). A Lane consists of an
input and an output high-speed differential pair. Also supported is a PCI Express reference clock.
Refer to the PCI Express Base Specification for more details on the functional requirements for the PCI
Express interface signals.
IMPLEMENTATION NOTE
Lane Polarity
15
20
By default, the PETp0 and PETn0 pins (the transmitter differential pair of the connector) shall be
connected to the PCI Express transmitter differential pair on the system board and to the PCI
Express receiver differential pair on the PCI Express Mini Card add-in card. Similarly by default,
the PERp0 and PERn0 pins (the receiver differential pair of the connector) shall be connected to
the PCI Express receiver differential pair on the system board and to the PCI Express transmitter
differential pair on the PCI Express Mini Card add-in card.
However, the “p” and “n” connections may be reversed to simplify PCB trace routing and minimize
vias if needed. All PCI Express receivers incorporate automatic Lane polarity inversion as part of
the Link initialization and training and will correct the polarity independently on each Lane. Refer
to Section 4.2.4 of the PCI Express Base Specification for more information on Link initialization and
training.
IMPLEMENTATION NOTE
25
Link Power Management
30
PCI Express Mini Card add-in cards that implement PCI Express-based applications are required by
the PCI Express Base Specification to implement Link power management states, including support for
the L0s and L1 (in addition to the primary L0 and L3 states). For PCI Express Mini Card
implementations, Active State PM for both L0s and L1 states shall also be enabled by default. Refer
to Section 5.4 of the PCI Express Base Specification for more information regarding Active State PM.
41
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
3.2.3.
5
USB Interface
The USB interface supports USB 2.0 in all three modes (Low Speed, Full Speed, and High Speed).
Because there is not a separate USB-controlled voltage bus, USB functions implemented on a PCI
Express Mini Card add-in card are expected to report as self-powered devices. All enumeration, bus
protocol, and bus management features for this interface are defined by Universal Serial Bus
Specification, Revision 2.0.
USB-based Mini Cards that implement a wakeup process are required to use the in-band wakeup
protocol (across the USB_D+/USB_D- pins) as defined in the Universal Serial Bus Specification and
shall not use the WAKE# signal to enable the in-band wakeup process.
10
15
20
3.2.4.
The auxiliary signals are provided on the system connector to assist with certain system level
functionality or implementation. These signals are not required by the PCI Express architecture, but
may be required by specific implementations such as PCI Express Mini Card. The high-speed signal
voltage levels are compatible with advanced silicon processes. The optional low speed signals are
defined to use the +3.3Vaux supply, as it is the lowest common voltage available. Most ASIC
processes have high voltage (thick gate oxide) I/O transistors compatible with +3.3V. The use of
the +3.3Vaux supply allows PCI Express signaling to be used with existing control bus structures,
avoiding a buffered set of signals and bridges between the buses.
The PCI Express Mini Card add-in card and system connectors support the auxiliary signals
described in the following sections.
3.2.4.1.
25
35
Reference Clock
The REFCLK+/REFCLK- signals are used to assist the synchronization of the card’s PCI Express
interface timing circuits. Availability of the reference clock at the card interface may be gated by the
CLKREQ# signal as described in Section 3.2.4.2. When the reference clock is not available, it will
be in the parked state. A parked state is when the clock is not being driven by a clock driver and
both REFCLK+ and REFCLK- are pulled to ground by the ground termination resistors. Refer to
the PCI Express Card Electromechanical Specification for more details on the functional and tolerance
requirements for the reference clock signals.
3.2.4.2.
30
Auxiliary Signals
CLKREQ# Signal
The CLKREQ# signal is an open drain, active low signal that is driven low by the PCI Express Mini
Card function to request that the PCI Express reference clock be available (active clock state) in
order to allow the PCI Express interface to send/receive data. Operation of the CLKREQ# signal
is determined by the state of the dynamic clock management enable bit in the Link Control Register
(offset 010h). When disabled, the CLKREQ# signal shall be asserted at all times whenever power is
applied to the card. When enabled, the CLKREQ# signal may be de-asserted during an L1 Link
state.
42
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
5
Whenever dynamic clock management is enabled and when a card stops driving CLKREQ# low, it
indicates that the device is ready for the reference clock to transition from the active clock state to a
parked (not available) clock state. Reference clocks are not guaranteed to be parked by the host
system when CLKREQ# gets de-asserted and module designs shall be tolerant of an active
reference clock even when CLKREQ# is de-asserted by the module.
The card must drive this signal low during power up, whenever it is reset, and whenever it requires
the reference clock to be in the active clock state. Whenever PERST# is asserted, including when
the device is not in D0, CLKREQ# shall be asserted.
10
15
It is important to note that the PCI Express device must delay de-assertion of its CLKREQ# signal
until it is ready for its reference clock to be parked. Also, the device must be able to assert its clock
request signal, whether or not the reference clock is active or parked, when it needs to put its Link
back into the L0 Link state. Finally, the device must be able to sense an electrical idle break on its
up-stream-directed receive port and assert its clock request, whether or not the reference clock is
active or parked.
The assertion and de-assertion of CLKREQ# are asynchronous with respect to the reference clock.
Add-in cards that do not implement a PCI Express interface shall leave this output unconnected on
the card.
20
25
CLKREQ# has additional electrical requirements over and above standard open drain signals that
allow it to be shared between devices that are powered off and other devices that may be powered
on. The additional requirements include careful circuit design to ensure that a voltage applied to the
CLKREQ# signal network never causes damage to a component even if that particular
component’s power is not applied.
Additionally, the device must ensure that it does not pull CLKREQ# low unless CLKREQ# is
being intentionally asserted in all cases, including when the related function is in D3cold. This means
that any component implementing CLKREQ# must be designed such that:
Unpowered CLKREQ# output circuits are not damaged if a voltage is applied to them from
other powered “wire-ORed” sources of CLKREQ#.
When power is removed from its CLKREQ# generation logic, the unpowered output does not
present a low impedance path to ground or any other voltage.
30
These additional requirements ensure that the CLKREQ# signal network continues to function
properly when a mixture of powered and unpowered components have their CLKREQ# outputs
wire-ORed together. It is important to note that most commonly available open drain and tri-state
buffer circuit designs used “as is” do not satisfy the additional circuit design requirements for
CLKREQ#.
43
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
3.2.4.2.1.
5
Power-up Requirements
CLKREQ# is asserted in response to PERST# assertion. On power up, CLKREQ# must be
asserted by a PCI Express device within a delay (TPVCRL) from the power rails achieving specified
operating limits and PERST# assertion. This delay is to allow adequate time for the power to
stabilize on the card and certain system functions to start prior to the card starting up. CLKREQ#
may not be de-asserted while PERST# is asserted.
System power-on or
insertion detection
+3.3Vaux/+1.5V
TPVCRL
CLKREQ#
TPVPGL
TPERST#-CLK
PERST#
REFCLK
Note: TPVCRL is measured from the later rising edge of either 3.3V or 1.5V.
A-0441A
Figure 3-1: Power-Up CLKREQ# Timing
Table 3-2: Power-Up CLKREQ# Timings
Symbol
Parameter
TPVCRL
Power Valid to CLKREQ#
Min
Max
Units
100
μs
Output active
TPVPGL
Power Valid to PERST#
1
ms
100
μs
Input inactive
TPERST#-CLK
10
REFCLK stable before
PERST# inactive
The system is required to have the reference clock for a PCI Express device in the parked clock state
prior to device power-up. The state of the reference clock is undefined during device power-up, but
it must be in the active clock state for a setup time TPERST#-CLK prior to PERST# de-assertion.
44
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
3.2.4.2.2.
Dynamic Clock Control
After a PCI Express device has powered up and whenever its upstream link enters the L1 link state,
it shall allow its reference clock to be turned off (put into the parked clock state). To accomplish
this, the device de-asserts CLKREQ# (high) and it must allow that the reference clock will
transition to the parked clock state within a delay (TCRHoff).
5
10
To exit L1, the device must assert CLKREQ# (low) to re-enable the reference clock. After the
device asserts CLKREQ# (low) it must allow that the reference clock will continue to be in the
parked clock state for a delay (TCRLon) before transitioning to the active clock state. The time that it
takes for the device to assert CLKREQ# and for the system to return the reference clock to the
active clock state are serialized with respect to the remainder of L1 recovery. This time must be
taken into account when the device is reporting its L1 exit latency.
+3.3Vaux/+1.5V
CLKREQ#
TCRHoff
TCRLon
REFCLK+/–
Link State L1.Entry
L1.Idle
Recovery
A-0442A
Figure 3-2: CLKREQ# Clock Control Timings
All links attached to a PCI Express device must complete a transition to the L1.Idle state before the
device can de-assert CLKREQ#. The device must assert CLKREQ# when it detects an electrical
idle break on any receiver port. The device must assert CLKREQ# at the same time it breaks
electrical idle on any of its transmitter ports in order to minimize L1 exit latency.
Table 3-3: CLKREQ# Clock Control Timings
15
Symbol
Parameter
Min
TCRHoff
CLKREQ# de-asserted high
to clock parked
0
TCRLon
CLKREQ# asserted low to
clock active
Max
Units
ns
400
ns
There is no maximum specification for TCRHoff and no minimum specification for TCRLon. This means
that the system is not required to implement reference clock parking or that the implementation may
not always act on a device de-asserting CLKREQ#.
A device should also de-assert CLKREQ# when its link is in L2 or L3, much as it does during L1.
45
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
3.2.4.2.3.
5
Support for the CLKREQ# dynamic clock protocol should be reported using bit 18 in the PCI
Express link capabilities register (offset 0C4h). To enable dynamic clock management, bit 8 of the
Link Control register (offset 010h) is provided. By default, the card shall enable CLKREQ#
dynamic clock protocol upon initial power up and in response to any warm reset by the host system.
System software may subsequently disable this feature as needed. See PCI Express Base Specification,
Rev. 1.1 (or later) for more information regarding these bits.
3.2.4.3.
10
20
25
WAKE# Signal
The WAKE# signal is an open drain, active low signal that is driven low by a PCI Express Mini
Card function to reactivate the PCI Express Link hierarchy’s main power rails and reference clocks.
Only add-in cards that support the wakeup process connect to this pin. If the add-in card has
wakeup capabilities, it must support the WAKE# signal. Likewise, only systems that support the
wakeup function need to connect to this pin, but if they do, they must fully support the WAKE#
function. If the wakeup process is used, the +3.3Vaux supply must be present and used for this
function. The assertion and de-assertion of WAKE# are asynchronous to any system clock. See
Chapter 5 of the PCI Express Base Specification for more details on PCI compatible power
management. See the PCI Express Card Electromechanical Specification for more details on the functional
requirements for the WAKE# signal.
If implemented in the host platform, a host pull-up resistor (≥5 kΩ) tied to no higher than
+3.3Vaux is required on this pin.
3.2.4.5.
30
PERST# Signal
The PERST# signal is de-asserted to indicate when the system power sources are within their
specified voltage tolerance and are stable. PERST# should be used to initialize the card functions
once power sources stabilize. PERST# is asserted when power is switched off and also can be used
by the system to force a hardware reset on the card. The system may also use PERST# to cause a
warm reset of the add-in card. Refer to the PCI Express Card Electromechanical Specification for more
details on the functional requirements for the PERST# signal.
3.2.4.4.
15
Clock Request Support Reporting and Enabling
SMBus
The SMBus is a two-wire interface through which various system components can communicate
with each other and the rest of the system. It is based on the principles of operation of I2C. The
SMBus interface pins are collectively optional for both the add-in card and system board. If the
optional management features are implemented, SMBCLK and SMBDAT are both required. The
pins assigned to these functions can only be used for these functions and are to be left disconnected
if the functions are not implemented. See the PCI Express Card Electromechanical Specification for more
details on the functional requirements for the SMBus.
46
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
3.2.5.
3.2.5.1.
Communications Specific Signals
Status Indicators
Three LED signals are provided to enable wireless communications add-in cards to provide status
indications to users via system provided indicators.
5
LED_WPAN#, LED_WLAN#, and LED_WWAN# output signals are active low and are intended
to drive system-mounted LED indicators. These signals shall be capable of sinking to ground a
minimum of 9.0 mA at up to a maximum VOL of 400 mV.
Table 3-4 presents a simple indicator protocol for each of two defined LED states as applicable for
wireless radio operation. Although the actual definition of the indicator protocol is established by
the OEM system developer, the following recommendation may be useful in establishing a
minimum common implementation across many platforms.
Table 3-4: Simple Indicator Protocol for LED States
State
OFF
Definition
The LED is emitting no light.
Interpretation
Radio is incapable of transmitting.
This state is indicated when the card is not
powered, the W_DISABLE# signal is
asserted to disable the radio, or when the
radio is disabled by software.
ON
The LED is emitting light.
Radio is capable of transmitting.
The LED should remain ON even if the
radio is not actually transmitting. For
example, the LED remains ON during
temporary radio disablements performed
by the Mini Card of its own volition to do
scanning, switching radios/bands, powermanagement, etc.
If the card is in a state wherein it is
possible that radio can begin transmitting
without the system user performing any
action, this LED should remain ON.
10
More advanced indicator protocols are allowed as defined by the OEM system developer.
Advanced features might include use of blinking or intermittent ON states which can be used to
indicate radio operations such as scanning, associating, or data transfer activity. Also, use of
blinking states might be useful in reducing LED power consumption.
47
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
3.2.5.2.
W_DISABLE# Signal
5
The W_DISABLE# signal is provided to allow wireless communications add-in cards to allow users
to disable, via a system-provided switch, the add-in card’s radio operation in order to meet public
safety regulations or when otherwise desired. Implementation of this signal is required for systems
and all add-in cards that implement radio frequency capabilities.
10
The W_DISABLE# signal is an active low signal that when asserted (driven low) by the system shall
disable radio operation. A pull-up resistor between W_DISABLE# and +3.3Vaux is required on
the card and should be in the range of 100 kΩ to 200 kΩ. The assertion and de-assertion of the
W_DISABLE# signal is asynchronous to any system clock. All transients resulting from mechanical
switches need to be de-bounced by system circuitry.
When the W_DISABLE# signal is asserted, all radios shall be disabled. When the W_DISABLE#
is not asserted, the radio may transmit if not disabled by other means such as software. This signal
may be shared between multiple Mini Cards.
15
20
25
In normal operation, the card should disassociate with the wireless network and cease any further
operations (transmit/receive) as soon as possible after the W_DISABLE# signal is asserted. Given
that a graceful disassociation with the wireless network fails to complete in a timely manner, the
Mini Card shall discontinue any communications with the network and assure that its radio
operation has ceased no later than 30 seconds following the initial assertion of the W_DISABLE#
signal. Once the disabling process is complete, the LED specific to the radio shall indicate the
disabled condition to the user.
The card should initiate and indicate to the user the process of resuming normal operation within
one second of de-assertion of the W_DISABLE# signal. Due to the potential of a software disable
state, the combination of both the software state and W_DISABLE# assertion state must be
determined before resuming normal operation. Table 3-5 illustrates this requirement as a function
of W_DISABLE# and the software control setting such that the radio’s RF operation remains
disabled unless both the hardware and software are set to enable the RF features of the card.
Table 3-5: Radio Operational States
W_DISABLE#
SW Control Setting*
Radio Operation
De-asserted (HIGH)
Enable Radio
Enabled (RF operation allowed)
De-asserted (HIGH)
Disable Radio
Disabled (no RF operation allowed)
Asserted (LOW)
Enable Radio
Disabled (no RF operation allowed)
Asserted (LOW)
Disable Radio
Disabled (no RF operation allowed)
*
30
This control setting is implementation specific; this column represents the collective intention of the host
software to manage radio operation.
The system is required to assure that W_DISABLE# be in a deterministic state (asserted or deasserted) whenever power is applied to the add-in; i.e., +3.3Vaux is present.
48
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
3.2.6.
5
The UIM signals are defined on the system connector to provide the interface between the
removable User Identity Module (UIM), an extension of a Subscriber Identity Module (SIM), and a
wireless wide area network (WWAN) radio device residing on the PCI Express Mini Card add-in
card. The UIM contains parameters necessary for the WWAN device's operation in a wireless wide
area network radio environment. The UIM signals are described in the following sections for PCI
Express Mini Card add-in cards that support the off-card UIM interface.
3.2.6.1.
10
15
UIM_PWR
Refer to ISO/IEC 7816-3 for more details on the voltage and current tolerance requirements for the
UIM_PWR power source. Note that the UIM grounding requirements can be provided by using
any GND pin. Only PCI Express Mini Card add-in cards that support a UIM card shall connect to
this pin. If the add-in card has UIM support capabilities, it must support the UIM_PWR power
source at the appropriate voltage for each class of operating conditions (i.e., voltage) supported as
defined in ISO/IEC 7816-3.
UIM_PWR maps to contact number C1 as defined in ISO/IEC 7816-2.
3.2.6.2.
20
User Identity Module (UIM) Interface
UIM_RESET
This signal provides the UIM card with the reset signal. Refer to ISO/IEC 7816-3 for more details
on the functional and tolerance requirements for the UIM_RESET signal. Only PCI Express Mini
Card add-in cards that support a UIM card shall connect to this pin. If the add-in card has UIM
support capabilities, it must support the UIM_RESET signal.
UIM_RESET maps to contact number C2 as defined in ISO/IEC 7816-2.
3.2.6.3.
25
UIM_CLK
This signal provides the UIM card with the clock signal. Refer to ISO/IEC 7816-3 for more details
on the functional and tolerance requirements for the UIM_CLK signal. Only PCI Express Mini
Card add-in cards that support a UIM card shall connect to this pin. If the add-in card has UIM
support capabilities, it must support the UIM_CLK signal.
UIM_CLK maps to contact number C3 as defined in ISO/IEC 7816-2.
3.2.6.4.
30
UIM_VPP
Refer to ISO/IEC 7816-3 for more details on the voltage and current tolerance requirements for the
UIM_VPP power source for class A devices.
This signal is reserved for future use for devices of other classes.
UIM_VPP maps to contact number C6 as defined in ISO/IEC 7816-2.
49
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
3.2.6.5.
5
UIM_DATA
This signal is used as output (UIM reception mode) or input (UIM transmission mode) for serial
data. Refer to ISO/IEC 7816-3 for more details on the functional and tolerance requirements for
the UIM_DATA signal. Only PCI Express Mini Card add-in cards that support a UIM card shall
connect to this pin. If the add-in card has UIM support capabilities, it must support the
UIM_DATA signal.
UIM_DATA maps to contact number C7 as defined in ISO/IEC 7816-2.
3.3.
10
Connector Pin-out Definitions
The following sections illustrate signal pin-outs for the system connector. Table 3-6 lists the pin-out
for the system connector.
Table 3-6: System Connector Pin-out
Pin #
Name
Pin #
Name
51
Reserved
52
+3.3Vaux
49
Reserved
50
GND
47
Reserved
48
+1.5V
45
Reserved
46
LED_WPAN#
43
GND
44
LED_WLAN#
41
+3.3Vaux
42
LED_WWAN#
39
+3.3Vaux
40
GND
37
GND
38
USB_D+
35
GND
36
USB_D-
33
PETp0
34
GND
31
PETn0
32
SMB_DATA
29
GND
30
SMB_CLK
27
GND
28
+1.5V
25
PERp0
26
GND
23
PERn0
24
+3.3Vaux
21
GND
22
PERST#
19
Reserved*
(UIM_C4)
20
W_DISABLE#
17
Reserved*
(UIM_C8)
18
GND
Mechanical Key
50
15
GND
16
UIM_VPP
13
REFCLK+
14
UIM_RESET
11
REFCLK-
12
UIM_CLK
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
Pin #
*
3.3.1.
5
Pin #
Name
9
GND
10
UIM_DATA
7
CLKREQ#
8
UIM_PWR
5
COEX2
6
1.5V
3
COEX1
4
GND
1
WAKE#
2
3.3Vaux
Reserved for future UIM interface (if needed)
Grounds
Some of the higher frequency signals require additional isolation from surrounding signals using the
concept of interleaving ground (GND) pins separating signals within the connector. These pins
should be treated as a normal ground pin with connections immediately made to the ground planes
within a card design.
3.3.2.
10
Name
Coexistence Pins
COEX1 and COEX2 are provided to allow for the implementation of wireless coexistence solutions
between the radio(s) on the Mini Card and other off-card radio(s). These other radios can be
located on another Mini Card located in the same host platform or as alternate radio
implementations (e.g., using a PCI Express Mini CEM or a proprietary form-factor add-in solution).
The functional definition of these pins are OEM specific and should be coordinated between the
host platform OEM and card vendors. The ordered labeling of these signals in this specification are
intended to help establish consistent implementations, where practical, across multiple instances of
cards in the host platform.
15
3.3.3.
Reserved Pins
Reserved pins are expected to be not terminated on either the add-in card or system board side of
the connector. These pins are reserved for definition with future revisions of this specification.
Non-standard use of these pins may result in incompatibilities in solutions aligned with the future
revision.
20
One subset of the reserved pins is tentatively reserved for specific applications as noted in Table 3-6.
If new functionality requires use of these specially marked pins, they may be released for redefinition
on an as needed basis.
51
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
3.4.
Electrical Requirements
3.4.1.
Logic Signal Requirements
The 3.3V card logic levels for single-ended digital signals (WAKE#, CLKREQ#, PERST#, and
W_DISABLE#) are given in Table 3-7.
Table 3-7: DC Specification for 3.3V Logic Signaling
Symbol
20
Min
Max
Units
Notes
3.3 – 9%
3.3 + 9%
V
3
+3.3Vaux
Supply Voltage
VIH
Input High Voltage
2.0
3.6
V
1
VIL
Input Low Voltage
-0.5
0.8
V
1
IOL
Output Low Current for
open-drain signals
0.4 V
4
mA
2
IIN
Input Leakage Current
0 V to 3.3 V
-10
+10
µA
1
ILKG
Output Leakage Current
0 V to 3.3 V
-50
+50
µA
1
CIN
Input Pin Capacitance
7
pF
1
COUT
Output Pin Capacitance
30
pF
2
3.4.2.
15
Conditions
Notes:
1. Applies to PERST# and W_DISABLE#.
2. Applies to CLKREQ# and WAKE#.
3. As measured at the card connector pad.
5
10
Parameter
Digital Interfaces
A common electrical test fixture is specified and used for evaluating connector signal integrity. The
test fixture has 50 Ω single ended traces 6 mils wide that must be uncoupled. The impedance
variation of those traces shall be controlled within ±5%. Refer to Appendix A for detailed
discussions on the test fixture.
Detailed testing procedures, such as the vector network analyzer settings, operation, and calibration
are specified in Appendix A. This appendix should be used in conjunction with the PCI Express
Connector Test Fixture.
For the insertion loss and return loss tests, the measurement shall include 1-inch long PCB traces
with 0.5 inches on the system board and 0.5 inches on the add-in card. Note that the edge finger
pad is not counted as the add-in card PCB trace. It is considered part of the connector interface.
The 1-inch PCB trace included in the connector measurement is a part of the trace length allowed
on the system board.
Either single ended measurements that are processed to extract the differential characteristics or true
differential measurements are allowed. The detailed definition and description of the test fixture and
the measurement procedures are provided separately in Appendix A.
25
An additional consideration to the connector electrical performance is the connector-to-system
board and connector-to-add-in-card launches. The connector through hole pad and anti-pad sizes,
52
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
5
as well as trace layout on the system board shall follow the recommendations in the PCI Express
Electrical Design Guidelines. On the add-in card, the ground and power planes underneath the PCI
Express high-speed signals (edge fingers) shall be removed. Otherwise, the edge fingers will have
too much capacitance and greatly degrade the connector performance. More detailed discussion on
the add-in card electrical design can be found in Appendix A and PCI Express Electrical Design
Guidelines.
Table 3-8 lists the electrical signal integrity parameters, requirements, and test procedures.
Table 3-8: Signal Integrity Requirements and Test Procedures
Parameter
Insertion loss (IL)
Procedure
EIA 364-101
The EIA standard must be used with the
following considerations:
1. The step-by-step measurement procedure
is outlined in Appendix A.
2. A common test fixture for connector
characterization will be used.
Requirements
1 dB max up to
1.25 GHz;
≤ [1.6
* (F - 1.25)+1] dB
for 1.25 GHz
< F ≤ 3.75 GHz
(for example, ≤5 dB
at F = 3.75 GHz)
3. This is a differential insertion loss
requirement. Therefore, either true
differential measurement must be made
or post processing of the single ended
measurements must be done to extract
the differential characteristics of the
connector. The methodology of doing so
is covered in Appendix A.
Return loss (RL)
EIA 364-108
The EIA standard must be used with the
following considerations:
1. The step-by-step measurement procedure
is outlined in Appendix A.
≤ -12 dB up to
1.3 GHz; ≤ -7 dB up
to 2 GHz; ≤ -4 dB up
to 3.75 GHz
2. A common test fixture for connector
characterization will be used.
3. This is a differential return loss
requirement. Therefore, either true
differential measurement must be made
or post processing of the single ended
measurements must be done to extract
the differential characteristics of the
connector. The methodology of doing so
is covered in Appendix A.
Intra-pair skew
Intra-pair skew must be achieved by design;
measurement not required.
5 ps max
53
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
Parameter
Crosstalk: NEXT
Procedure
EIA 364-90
The EIA standard must be used with the
following considerations:
1. The crosstalk requirement is with respect
to all the adjacent differential pairs
including the crosstalk from opposite
sides of the connector. This is reflected in
the measurement procedure and
adjustments to the procedure should be
made accordingly.
Requirements
-32 dB up to
1.25 GHz; ≤ -[32 - 2.4
* (F - 1.25)] dB
for 1.25 GHz
< F ≤ 3.75 GHz (for
example, ≤ -26 dB at
3.75 GHz)
2. The step-by-step measurement procedure
is outlined in Appendix A.
3. A common test fixture for connector
characterization will be used.
This is a differential crosstalk requirement
between a victim differential signal pair and all
of its adjacent differential signal pairs.
Therefore, either true differential
measurement must be made or post
processing of the single ended measurements
must be done to extract the differential
crosstalk of the connector. The methodology
of doing so is covered in Appendix A.
Jitter
By design; measurement not required
10 ps max
Notes:
54
1.
A network analyzer is preferred. If greater dynamic range is required, a signal generator/spectrum
analyzer may be used. Differential measurements require the use of a two-port (or a four-port)
network analyzer to measure the connector. The differential parameters may be measured directly
if the equipment supports “True” differential excitation. (“True” differential excitation is the
simultaneous application of a signal to one line of the pair and a 180-degree phase shifted version
of the signal to the second line of the pair.) If single ended measurements are made, the differential
connector parameters must be derived from the single ended measurements as defined in
Appendix A.
2.
If differential measurements are made directly by application of differential signals, the equipment
must use phase-matched fixturing. The fixturing skew and measurement cabling should be verified
to be < 1 ps on a TDR.
3.
The connector shall be targeted for a 100 Ω differential impedance, though it is not explicitly
specified.
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
3.4.3.
Power
PCI Express Mini Card has two defined power rails: +3.3Vaux and +1.5V. Table 3-9 lists the
voltage tolerances and power ratings for each PCI Express Mini Card slot implemented in a system.
Table 3-9: Power Ratings
Power
Rail
Voltage
Tolerance
3.3Vaux
±9%
D0-D2, D3hot Power1
Peak (max)
mA
Normal (max)
mA
2,750
1,100
D3cold Power2, 3
Peak (max)
mA
2,750 (wake
enabled)
Normal (max)
mA
250 (wake enabled)
5 (no wake
enabled)
+1.5V
1.
2.
3.
±5%
500
375
N/A
N/A
For USB: Power states greater than Bus Suspend.
For USB: Wake enabled is USB Remote wakeup-Enabled and No Wake enabled is USB Remote wakeupDisabled.
This D3 current limit only applies when the +1.5V voltage source is not available; i.e., the card is in D3cold.
Definitions:
Peak – The highest averaged current value over any 100-microsecond period
Normal – The highest averaged current value over any 1-second period
Note:
5
The operation of the +3.3Vaux power source shall conform to the PCI Bus Power Management Interface
Specification and the Advanced Configuration and Power Interface (ACPI) Specification, except as otherwise
specified by this document. If the host does not support wake from D3, +3.3Vaux may be removed
by the host when +1.5V is removed.
3.5.
10
For Peak, the value of “100-microsecond period” was derived as follows:
The period of time that the current is to be measured and averaged over must be less than a single
GPRS slot time. This enables measurement of the average peak current within a single GPRS slot.
There are 4.6 milliseconds/GPRS frame and eight slots per GPRS frame = 575 microseconds/slot.
The 100-microsecond period < 575-microsecond period.
Card Enumeration
All PCI Express-based Mini Cards must enumerate to either multi-function or single function PCI
Endpoints.
All USB-based Mini Cards must enumerate to either single function traditional USB Devices or
Composite Devices or Compound Devices.
55
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
56
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
A
A.
Supplemental Guidelines for PCI Express
Mini Card Connector Testing
This section provides supplemental guidelines for testing a PCI Express Mini Card connector.
Because the PCI Express Mini Card connector has a different form factor and pin configuration
than the desktop connector, a set of specific test boards has been designed to be used as the test
vehicle for the PCI Express Mini Card connectors.
A.1.
5
Test Boards Assembly
There are three test boards: a baseboard and two plug-in cards. The baseboard has the footprints
for the PCI Express Mini Card connector. One plug-in card is used in insertion loss and return loss
measurement. The other plug-in card is used for crosstalk testing.
57
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
A.1.1.
Base Board Assembly
Figure A-1: Base Board Insertion Loss/Return Loss Structure
Figure A-2: Base Board Crosstalk Structure
58
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
All parts should be on the front side of the baseboard (i.e., the side printed with description of the
board). Load the PCI Express Mini Card connector to location J44 and J48. Load female SMA
connectors to locations J4, J9, J72, J75, J83, and J86. Load 0402-SMT 50 Ω resistors to locations
R1, R3, R8, R9, R71, R72, R82, and R83.
A.1.2.
Plug-in Cards Assembly
Figure A-3: Plug-in Card Insertion Loss/Return Loss Structure
Figure A-4: Plug-in Card Insertion Loss/Return Loss Structure
5
All parts should be on the front side of the baseboard (i.e., the side printed with description of the
board). Load female SMA connectors to locations J37, J43, J12, J31, J8, and J22. Load 0402-SMT
50 Ω resistors to locations R89, R90, R91, R92, R28, R33, R35, and R38.
59
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
A.2.
Insertion Loss Measurement
Follow the guidelines in Section 5 of the PCI Express Connector High Speed Electrical Test Procedure. The
mobile test vehicle has the test structures (SMA and traces) as shown in Figure A-1 and Figure A-3.
A.3.
Return Loss Measurement
Follow the guidelines in Section 6 of the PCI Express Connector High Speed Electrical Test Procedure. The
mobile test vehicle has the test structures (SMA and traces) as shown in Figure A-2 and Figure A-4.
A.4.
5
10
Near End Crosstalk Measurement
Because the PCI Express Mini Card connector is x1 (one transmit differential pair and one receive
differential pair), the near end crosstalk measurement can be limited to the two differential pairs.
Therefore, the test structure and the mathematics of calculating the near end crosstalk are simplified.
The SMA connectors on the board shown in Figure 4 of the PCI Express Connector High Speed
Electrical Test Procedure can be reduced to the following: J72, J75, J83, and J86. Other neighboring
pins on the connector are terminated to 50 Ω or ground. J72 and J75 form the aggressor pair and
J83 and J86 form the victim pair.
Figure A-5 shows the configuration used in mobile measurements followed by an equation to
calculate the near end crosstalk. For details on making measurements, refer to Section 7 of the PCI
Express Connector High Speed Electrical Test Procedure.
Quad cable (x1 solution)
4
j+, j3
2
i +, i1
= 50 Ω resistance
A-0351
Figure A-5: Near End Crosstalk Measurement Illustration
60
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
DDNEXT =
1
(S 4 _ 1 + S 3 _ 2 ) − 1 (S 3 _ 1 + S 4 _ 2 )
2
2
Equation A-1: Simplified NEXT Equation for Mobile
Follow the procedures in Section 8 of the PCI Express Connector High Speed Electrical Test Procedure to
measure the S-parameters. As a result, substituting the reference designator (J numbers) into
Equation A-1, we have:
DDNEXT =
1
(S 72 _ 83 + S 75 _ 86 ) − 1 (S 75 _ 83 + S 72 _ 86 )
2
2
Equation A-2: NEXT Equation for Mobile Connector
61
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
62
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
B
B.
I/O Connector Guidelines
This appendix provides supplemental guidelines regarding available I/O connectors that have been
successfully used for applications intended for PCI Express Mini Card.
B.1.
Wire-line Modems
I/O connector recommendations for wire-line modem applications are provided in Section 5.5.2 of
the Mini PCI Specification, Revision 1.0.
B.2.
5
IEEE 802.3 Wired Ethernet
For I/O connector recommendations for IEEE 802.3 wired Ethernet (LAN) applications, refer to
Section 5.5.2 of the Mini PCI Specification, Revision 1.0.
B.3.
IEEE 802.11 Wireless Ethernet
The following commercially-available connectors have been successfully used in Mini PCI wireless
applications. Refer to vendor specifications for more information.
Hirose U.FL Series – SMT Ultra-Miniature Coaxial Connectors (www.hirose.com)
63
PCI EXPRESS MINI CARD ELECTROMECHANICAL SPECIFICATION, REVISION 1.2
64
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement