Pmc Add-On Card; Xmc Add-On Card; Sata Interface - SMART Embedded Computing MVME2500 Installation & Use Manual

PMC/XMC sites are keyed for 3.3V PMC signaling. The PMC and the XMC add-on cards
must have a hole in the 3.3 V PMC keying position in order to be populated on the
MVME2500. The XMC specification accommodates this since it is expected that carrier
cards will host both XMC and PMC capable add-on cards.
The MVME2500 have a keying pin at the 3.3V location at the PMC site. The MVME2500
boards are not 5 volt PMC IO compatible. The MVME2500 also has a 5 volt keying pin
location at the PMC site used to mount the SATA adapter card.
The MVME2500 utilizes the P20x0 x2 link PCI Express interface. It is designed such that
the same PCI-E interface is used for either PMC or XMC through Pericom's PI2PCIE2412.
It is PCI-E Gen2 compliant with four differential channel input and 2:1 MUX switch with
single enable. The enable pin is controlled by FPGA through on-board switch.
The on-board switch S2-4 determines the direction of the PCI-E MUX switch. The default
setting OFF routes the differential lines to the PMC. Otherwise, it is routed to the XMC
connector.
4.9.1

PMC Add-on Card

The MVME2500 PMC interface utilizes IDT's TSI384 as the PCie/PCI-X bridge. It can
support up to 8.5Gbps (64 bits x 133MHz). The on-board switch S2-5 configures the
TSI384 to run on either 100MHz or 133MHz, with 133MHz as default.
The MVME2500 supports multi-function PMCs and processor PMCs (PrPMCs). The PMC
site has two IDSELs, two REQ/GNT pairs, and EREADY to support PrPMC as defined by
VITA39.
4.9.2

XMC Add-on Card

The x2 links the PCI-E Gen 1 and is directly routed to the P15 XM connector through
Pericom MUX Switch. The on-board switch S2-4 should be set to ON.
The XMC add-on cards are required to operate at +5V or +12V (from carrier to XMC). The
MVME2500 provides +5V to the XMC VPWR (Variable Power) pins. The MVME2500 does
not provide +12V to the XMC VPWR pins. Voltage tolerances for VPWR and all carrier
supplied voltage (+3.3V, +12V, -12V) are defined by the base XMC standard.
4.10

SATA Interface

The MVME2500 supports an optional 2.5" SATA HDD. The connector interface is
compatible with the SATAMNKIT, which contains the following: one SSD/HDD, one SATA
board, screws and a mounting guide. The SATA connector can support a horizontal
mounted SSD/HDD.
MVME2500 Installation and Use (6806800L01S)
Functional Description
77