abaco systems XVR16 Series, Hardware Reference Manual, Page: 56 / 151

56 XVR16*4th Generation Intel® Core™ i7 Based Rugged VME Single Board Computer Publication No. 500-9300007876-000 Rev. C.0
5.3.8 XMC2 Connector (J25)
The following table lists the pin assignments of the onboard XMC2 connectors.
XMC2 is available on the XVR16 when the PMC2/XMC2 is chosen as an option for
the board (i.e. onboard hard drive is not chosen as an option). The XMC2 slot
provides a x4 lane wide PCI Express interface. Only if an XMC mezzanine board
is installed are the PCI express lanes muxed to the XMC slot, otherwise these
lanes are muxed to the PMC2 bridge.
The XMC2 is electrically and mechanically compliant to the specification

VITA 61.0 and IEEE 1386.1.
Figure 5-19 XMC Connector (J25)
A1 A19
F19
F1
Table 5-18 XMC2 Connector Pin Assignments (J25)
Pin A B C D E F
1 TX0+ TX0- +3.3 V TX1+ TX1- +5 V
2 GND GND TRST GND GND
XMCRSTIN
a
3 TX2+ TX2- +3.3 V TX3+ TX3- +5 V
4 GND GND TCK GND GND
XMC2_RSTOUT
b
5 NC NC +3.3 V NC NC +5 V
6 GND GND TMS GND GND +12 V
7 NC NC +3.3 V NC NC +5 V
8 GND GND TDI GND GND -12 V
9 NC NC RPS NC NC +5 V
10 GND GND TDO GND GND GA0
11 RX0+ RX0N MBIST RX1+ RX1- +5 V
12 GND GND GA1 GND GND XMC2PRESENT
13 RX2+ RX2- +3.3 V AUX RX3+ RX3- +5 V
14 GND GND GA2 GND GND BMC_SDA
15 NC NC RPS NC NC +5 V
16 GND GND MVMRO GND GND BMC_SCL
17 NC NC RFU NC NC RFU
18 GND GND RPS GND GND RPS
19 CLK+ CLK- RPS WAKE ROOT RPS
a
Reset driven by XVR16
b
Reset driven by Mezzanine