Ampro Corporation COM 830 User Manual
Page 48
Chapter 3
Signals and Pinout Tables
42
Reference Manual
COM 830
NOTE
Some signals have special functionality during the reset process. They may
bootstrap some basic important functions of the module.
Table 3-21. Module Type Definition Signal Description
Signal
Description
I/O
Comment
TYPE[
0:2]#
The TYPE pins indicate to the Carrier Board the Pin-out Type that is
implemented on the module. The pins are tied on the module to
either ground (GND) or are no-connects (NC). For Pinout Type 1,
these pins are don’t care (X).
PDS
TYPE[0:2]#
signals are
available on all
modules
following the
Type 2-5 Pinout
standard.
The COM 830 is
based on the
COM Express
Type 2 pinout
therefore these
pins are not
connected.
TYPE2#
TYPE1#
TYPE0#
X
NC
NC
X
NC
NC
X
NC
GND
Pinout Type 1
Pinout Type 2
Pinout Type 3 (no IDE)
The Carrier Board should implement combinatorial logic that
monitors the module TYPE pins and keeps power off (e.g
deactivates the ATX_ON signal for an ATX power supply) if an
incompatible module pin-out type is detected.
Table 3-22. Power and GND Signal Descriptions
Signal
Description
I/O
PU/PD
Comment
VCC_12V
Primary power input: +12V nominal. All
available VCC_12V pins on the connector(s)
shall be used.
P
GND
Ground - DC power and signal and AC signal
return path.
All available GND connector pins shall be used
and tied to carrier board GND plane.
P