Kontron COMe Starterkit Eval T2 - Manual (Page 16)

COM Express Interfaces
2. COM Express Interfaces
The following section summarizes the signals found on COM Express Type 10, Type 2 and Type
6 connectors. Most of the signals listed in the following sections also apply to other COM
Express Module types. The pin-out for connector rows A and B remains mostly the same
regardless of the Module type but the pin-out for connector rows D and C are dependent on the
Module type. Refer to the COM Express Specification for information about the different pin-outs
of the Module types other than Type 10, 2 and 6.
With some planning and forethought by the Carrier Board designer, it is possible to create dual
use layouts that can accommodate Type 10 and Type 6 or Type 10 and Type 2, if desired.
2.1. COM Express Signals
The source document for the definition of the COM Express signals is the PICMG COM.0
R2.1 COM Express Module Base Specification .
Figure 2, Figure 3 and Figure 4 below summarizes the Type 10, Type 2 and Type 6 signals and
show a graphical representation of the A-B and C-D COM Express connectors. Each of the
signal groups in the figure is described and usage examples are given in the sub-sections of this
section.
PICMG ® COM Express ® Carrier Board Design Guide Rev. 2.0 / December 6, 2013
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