Ampro Corporation COM 830 manual Type, TYPE2# TYPE1# TYPE0#

Chapter 3 Signals and Pinout Tables

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[

The TYPE pins indicate to the Carrier Board the Pin-out Type that is

PDS

TYPE[0:2]#

0:2]#

implemented on the module. The pins are tied on the module to

signals are

either ground (GND) or are no-connects (NC). For Pinout Type 1,

available on all

these pins are don’t care (X).

modules

TYPE2#

TYPE1#

TYPE0#

following the

X

X

X

Pinout Type 1

Type 2-5 Pinout

NC

NC

NC

Pinout Type 2

standard.

The COM 830 is

NC

NC

GND

Pinout Type 3 (no IDE)

based on the

COM Express

The Carrier Board should implement combinatorial logic that

Type 2 pinout

monitors the module TYPE pins and keeps power off (e.g

therefore these

deactivates the ATX_ON signal for an ATX power supply) if an

pins are not

incompatible module pin-out type is detected.

connected.

Table 3-22. Power and GND Signal Descriptions

Signal

Description

I/O

PU/PD

Comment

VCC_12V

Primary power input: +12V nominal. All

P

available VCC_12V pins on the connector(s)

shall be used.

GND

Ground - DC power and signal and AC signal

P

return path.

All available GND connector pins shall be used

and tied to carrier board GND plane.

42 Reference Manual COM 830