Kontron COMe-cOHXX - Manual (Page 9)

Kontron COMe-cOH2/COMe-cOH6 User’s Guide
www.kontron.com
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2.2 Naming Clarifications
The COM Express® standard defines a Computer-On-Module, or COM, with all the
components necessary for a bootable host computer, packaged as a super-
component. The interfaces provide a smooth transition path from legacy
parallel interfaces such as IDE or parallel ATA (PATA) to Low Voltage
Differential Signaling (LVDS) interfaces including the PCI bus, PCI Express*,
and Serial ATA (SATA).
» ETXexpress® modules are Kontron COM Express® modules in the basic form
factor (125mm x 95mm) that follow pin-out types 2 or 6.
» microETXexpress® modules are Kontron COM Express® modules in the compact
form factor (95mm x 95mm) that follow pin-out types 2 or 6.
» nanoETXexpress® modules are Kontron COM Express® compatible modules in an
ultra-small form factor that follow pin-out types 1 or 10 (55mm x 84mm)
NOTE: The Kontron COMe-cOH# module takes advantage of new features introduced
in the PICMG COM COM.0 R2.0 COM Express® Specification.
2.3 Understanding the COM Functionality
All Kontron microETXexpress® and ETXexpress® modules contain two connectors
(X1A and X1B), each with two rows. The primary connector rows are Row A and
Row B (connector X1A). The secondary connector rows are Row C and Row D
(connector X1B). The COMe-cOH# COM uses the PICMG COM Express® pin-out Type 6
definition, which is a new addition to the PICMG COM Express standard and
documented in Revision 2.0 of the PICMG specification. The Type 6 pin-out is
based on Type 2 and also supports new features on the secondary connector
(rows C and D). The key changes are:
» The PCI interface is no longer supported and the pins are used instead for
digital display interfaces (DDI) and two additional PCI Express lanes
» The IDE (PATA) parallel interface is no longer supported and the pins are
used instead for additional transmit and receive pairs for four USB 3.0
ports.
» Three dedicated DDI ports have been added. Ports 1, 2, and 3 can be
configured individually for Display Port (DP), HDMI, or DVI and port 1 can
also be used for SDV0.
» SDVO is no longer supported.
» Two optional two-wire RS232 serial ports have been added using pins
formerly assigned to 12V signals.
The primary connector (Row A and Row B) on the COMe-cOH# COM features the
following functionality:
» Analog VGA graphics