XVME-6700A
USER
’S
MANUAL
Acromag, Inc. Tel: 248-295-0310
- 32 -
http://www.acromag.com
- 32 -
https://www.acromag.com
3.15 Watchdog
The XVME-6700A features a software-triggered multi-stage watchdog
solution. When the watchdog timer expires the module by default causes a
system reset.
For further information on the Watchdog feature, refer to
The APTIO Haswell
Core BIOS Manual For Acromag Products.
3.16 Expansion Sites
The XVME-6700A features two expansion sites that allow the board to be
customized for a wide array of customer applications.
The Lower Site accepts either PMC or XMC modules, with the module's P4
user I/O routed as 100ohm differential pairs to the optional P0 connector on
the XVME-6700A. A build option is available to instead route the I/O from the
module's P6 connector to the XVME-6700A's P0 connector.
The Upper Site accepts PMC or XMC modules, with the module's P4 user I/O
routed as 100ohm differential pairs to the P2 connector on the XVME-6700A.
A build option is available to instead add a second serial port, 4 General
Purpose Digital Inputs, and 4 General Purpose Digital Outputs to the XVME-
6700A's P2 connector, making the XVME-6700A compatible with the P2 I/O of
the XVME-6300. Please consult factory regarding this option.
3.16.1 XMC Modules
XMC modules can be used in either or both Upper and Lower Expansion Sites
on the XVME-6700A, however if one XMC module is used in conjunction with
one PMC module the XMC module must be in the Lower Site.
Each Expansion Site connects to the XMC module with a x8 PCIe interface.
While the connection itself supports Gen2 speeds, please note that the XMC
connectors are only rated for Gen1 speeds, limiting the supported speed of
the XMC modules to Gen1. A build option is available for the XMC connectors
to instead be VITA 61 connectors, which do support Gen2 speeds, however
this limits the site(s) to having only VITA 61 modules supported. Please
consult factory regarding this option.
When an XMC module is installed in the Upper Site, the PEX8114 PXIe to PCI-X
Bridge is automatically disabled and all 8 lanes of the PCIe interface for the
Upper site are connected to the XMC module. If this automatic mechanism
does not work with a particular XMC module,
site to work in XMC mode.
Note:
Processor XMC modules are not supported on the XVME-6700A.
