VPX4812A/4814A
User’s Manual
Single-Slot 3U VPX Bus XMC Carrier Card/Switch Card Module
Acromag, Inc. Tel: 248-295-0310 - 6 - www.acromag.com
Introduction
The VPX4812A has two primary functions that can be utilized in a VPX system simultaneously.
1.
XMC Carrier Card
–
The VPX4812A supports a Double Fat Pipe (x8) connection from an
XMC module to the on-board PCIe switch. The voltage used to power the XMC module
can be toggled between 5V or 12V using a DIP switch located on the VPX4812A.
2.
VPX Switch Card
–
The VPX4812A contains a 24-lane 5-port PCIe switch capable of Gen
2.0 speeds. When utilizing the VPX4812A as a switch card, a CPU module configured to
be an upstream port can communicate with up to three downstream VPX cards in the
system as well as an XMC module on the 4812A.
The VPX4812A supports the use of non-transparent bridging using the on-board PCIe switch. By
utilizing non-transparent bridging (NTB), the VPX4812A can be used to implement multi-hosted
topologies including intelligent adapter cards, dual-host systems with redundancy, and even
blade server systems.
Module and Backplane Profiles
The VPX4812A conforms to OpenVPX switch module profile MOD3-SWH-4F-16.4.5-2. This switch
profile is intended to be used in the OpenVPX backplane profile BKP3-CEN06-15.2.12-n shown
below.
Figure 1: OpenVPX Backplane Profile BKP3-CEN06-15.2.12-n
