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PCIe/104 and PCI/104-Express Specification Revision 3.0 February 17, 2015 Page 42
6. MECHANICAL SPECIFICATIONS
6.1. Connector A
Samtec’s QMS/QFS High Speed Interface series connectors were optimized for a 0.600” (15.24mm) stacking height and
standoff tolerances. Additionally, an optional 22mm top connector was developed to allow additional height above the
board. In both height options the bottom connector remains the same. An equivalent connector can be used.
It is permissible to use a OneBank connector for applications that do not require the signals or power in banks 2 and 3.
This connector consists of bank 1 pins 1 – 52 and its +5 volt power blade. All bank 1 signals and power are the same in
Type 1 and Type 2, so there is no such distinction when using the OneBank connector. It is recommended that all 3-bank
boards in a system be placed closest to the host CPU and then any OneBank boards be placed on the top or bottom of the
stack.
Note: Exercise caution when unplugging boards, especially with the smaller OneBank connectors. The connectors must
be kept in alignment and pulled straight apart to prevent damage to the exposed connector post.
6.1.1 Part Number
Top Connector (standard): ASP-129637-03 with 0.600 inch (15.24 mm) stack height
Top Connector (optional): ASP-142781-03 with 0.866 inch (22.00 mm) stack height
Top Connector (OneBank variation): ASP-129637-13 with 0.600 inch (15.24 mm) stack height
Top Connector (OneBank variation optional): ASP-142781-07 with 0.866 inch (22.00 mm) stack height
Bottom Connector (standard): ASP-129646-03 same for either stack height
Bottom Connector (OneBank variation): ASP-129646-22 same for either stack height
Figure 6-1 Standard Top Connector 0.600” (15.24mm)
ASP-129637-03 or equivalent
Figure 6-2 Optional Top Connector 0.866” (22.00mm)
ASP-142781-03 or equivalent
Figure 6-3 OneBank Top Connector ASP-129637-13 or equivalent
Shown with Pick-and-Place Adapter
- Version 3.0 1
- TRADEMARKS AND COPYRIGHTS 2
- REVISION HISTORY 3
- TABLE OF CONTENTS 5
- TABLE OF FIGURES 8
- TABLE OF TABLES 10
- Glossary of Terms 11
- 1. INTRODUCTION 12
- Purpose 12
- Standard Identification 12
- Description 12
- PCIe/104 Type 1 and Type 2 13
- PCI/104-Express Feature Set 14
- General Stacking Rules 14
- PCIe/104 Feature Set 14
- PCIe/104 15
- 1.9.2 SATA Links 16
- 1.9.3 LPC Bus 16
- 1.9.5 System Management Bus 17
- References 18
- 2. EXPANSION CONNECTOR A 19
- Functions 19
- Signal Descriptions 20
- Signal Naming Convention 21
- Pin Assignment 22
- 2.4.1.1 Two x8 or x4 Links 25
- 2.4.2 PEG_ENA# Signal 26
- 2.4.3 DIR Signal 26
- 2.4.3.1 DIR Line on Host 27
- 2.4.3.2 DIR Line on Device 27
- Switching 32
- System Clocking 32
- Layout Recommendations 33
- Routing Topology 34
- 2.8.2 SATA 35
- 3. EXPANSION CONNECTOR B 39
- +5V_SB, PSON#, and PME# 41
- System Stacking Rules 43
- Host Configuration Rules 43
- Stack Configuration Examples 45
- 5. ELECTRICAL SPECIFICATION 51
- Power and Ground 51
- AC/DC Signal Specifications 52
- Connector A 53
- Bottom Connector 54
- Top Connector 54
- Connector B 61
- Connector A: ASP-129637-03 66
- Top View of Module 66
- Standoff 67
- PC/104-Plus Brid 69
- PCI Device 69
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