AT-VPX-PMC/XMC-CAR is one of a family of modules to employ open architecture VITA 46 standard primarily to marry High Speed Interconnect such as Rapid IO and PCI Express. AT-VPX-Carrier carrier card offers maximum flexibility to system integrators to implement advanced multi function systems by use of high performance Mezzanine card (either PMC or XMC) in a standard VPX form factor.
AT-VPX-PMC/XMC-CAR carrier card is equipped with one mezzanine site capable of supporting Standard IEEE 1386 PMC or the latest high-performance VITA 42.3 XMC module. To the host processor, PMC and XMC Module on the carrier card appear as if they were on the host processor. PMC/XMC module supports 4-lane PCIe interface to J15 connector. PCI-X interface on PMC module is served by a 4-lane PCIe port on the central PCIe switch through a PCIe-to-PCI bridge. The AT-VPX-Carrier connects to other cards on the backplane via two, 4-lane PCI Express ports through the VITA 46 P1 Connector (ports A, B). All PCI Express ports go through a PLX PEX8617 PCI Express switch.
AT-VPX-PMC/XMC-CAR provides significantly greater number of user IO’s which are availed by PMC and XMC sites by providing 64 signals (32 pairs) of J14 I/O and 20 Differential IO, 24 Single Ended IO on J16 I/O from each of its mezzanine sites to the backplane connectors. The I/O is mapped as per the pattern P2w1-X24s+X8d+X12d mentioned in the VITA 46.9 draft specification, which provides for controlled impedance, matched length differential pairs.
The AT-VPX-PMC/XMC-CAR has the ability to connect to two I2C interfaces from the backplane P0 connector. Either of the two I2C can be used by an external I2C master for control and configuration of the card.
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