Artesyn COMX-P4080 Installation and Use (August 2014) - Manual (Page 71)

Functional Description
COMX-P4080 COM Express Module Installation and Use (6806800L20C) 71
The thermal sensor supplies two alarm signals for the system, defined as "ALERT" and "THRM".
When the detected temperature exceeds low temperature limit, an external diode fault will
cause the "ALERT" output to assert "low". This "ALERT" output is connected to the IRQ7 of the
COMX-P4080.
When the detected temperature exceeds the preset high temperature limit, the "THRM"
output will assert "low". The "THRM" signal can be connected to the power enable signal of the
core and platform power sources, and can be used to power down the COMX-P4080. This can
be done by installing the resistor R178, which is not installed by default.
4.19 Debugger
The COMX-P4080 supports the JTAG debugger, which is provided by default.
Debugger selection details can be seen the following figure.
Figure 4-11 COMX-P4080 Debugger Selection Details