D R A F T — F O R I N
T E R N A L U S E O N L Y
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User Guide
CPS3105
1 Introduction
1.1 Board Over view
The CPS3105 is a 3U CompactPCI® Serial carrier board that provides support for one XMC module. The
carrier board is intended to offer system designers a cost-effective solution to expand the systems I/O
capability using a wide range of XMCs available on the market. The CPS3105 is equipped with a dedicat-
ed PCI Express switch between the onboard XMC connector and the CPCI-S.0 system connector provid-
ing two advantages. First, it decouples and buffers the PCI Express signals and restores signal
integrity. Second, it is able to convert one x4 PCI Express 3.0 data stream from the system side into one
x8 PCI Express 2.1 data stream to the XMC side. Thus, maximum data bandwidth can be provided to com-
monly available XMC modules based on PCI Express 2.1.
1.2 Board Diagrams
The following diagrams provide additional information concerning board functionality and component
layout.
1.2.1 Functional Block Diagram
Figure 1: CPS3105 Functional Block Diagram
Onboard Power Supplies
12 V
Power Enable
Pwr LED
Onboard Power Supplies
12 V
PCIe
P1
Hot Swap Handle
Power Enable
Front
CompactPCI
Serial
x4 PCIe 3.0
PEX 8712
PCI Express
Switch
x8 PCIe 2.1
XMC Connector
PCIe x8
