Embedded Solutions
Page 4
FIGURE 1
PCIE8LXMCX2CB JN4/JN6 INTERFACE STANDARD
10
FIGURE 2
PCIE8LXMCX2CB RESISTOR SELECTION IO
12
FIGURE 3
PCIE8LXMCX2CB RESISTOR SELECTION CONNECTOR
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Product Description
PCIe8LXMCX2CB is part of the Dynamic Engineering PCIe and XMC Compatible family
of modular I/O components. PCIe8LXMCX2CB adapts 2 XMC’s to one PCIe slot.
Embedded applications frequently require real time processing coupled with special
purpose IO. With PCIe8LXMCX2CB’s two XMC positions; a PrXMC can be matched
with another XMC to make a high bandwidth processing node. The PrXMC can
communicate with the host for set-up, and then use the local bus to control and transfer
data with the special purpose IO card.
The CB model has a Connector Bus between the two XMC rear IO connectors. 0 ohm
resistors are used to select which lines are cross-connected and which go to the
standard IO options. The resistors are located front and back with almost “0” stub
length for the unused feature. The connections are impedance controlled and matched
length routed as differential pairs. 100 ohms.
A selection table is provided to help with resistor stuffing selection. Both of the
corresponding CB resistors will need to be installed to make the CB connection. For
example IO0_0P can be connected to IO1_0P by selection of both CB resistors for that
line. The standard IO connections will normally not be selected in this case, and can
be if it makes sense for your system.
Since there are 64 rear IO lines per XMC and each need 4 resistors; a total of 512
resistors are available. Too many to have a standardized table of options. Contact
Dynamic Engineering with your requirement. We will create a new -# to cover your
configuration. A small charge is required to cover the cost of an updated programming
file for the PnP and test program.
1
st
select which connector is tied to the IO. This can be on a signal by signal basis.
Either, neither, both. 2
nd
select which IO to connect the selected connections. See
List of Figures
