4 watchdog, 5 jida non-volatile and cmos settings – Kontron COMe-cPV2(v1.4) User Manual

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Kontron microETXexpress-PV User’s Guide

System
Temp

Internal HWM IC
temperature.

Provides the module’s PCB temperature

FAN 0

Onboard fan connector
tach input.

Voltage 0

CPU core voltage

Voltage 1

Module main (12V) input
voltage

A voltage divider is present on
this pin in order to be able to
read the full range of input
voltage. The reading must be
multiplied by 2 to have the real
value when using third party
software.

Voltage 2

Module 5V standby input
voltage

Voltage 3

RTC battery voltage

To read this sensor properly when
using third party software, the HWM
GPIO 1 must be enabled. This feature
prevents unnecessary drainage of the
RTC battery.

5.4

Watchdog

This feature is implemented through the LPC on the CPLD and offers a dual-

stage watchdog. It first generates an NMI and, after 1mS, a reset is
generated. The application software should strobe the WDTimer to prevent a
timeout. The WDTrigger resets and restarts the system after a timeout to
provide a way to recover from program crashes or lockups.

The Watchdog can be triggered through

K-Station

Direct programming (i.e., writing data into one register of the CPLD)

For information about programming this feature, see the JIDA32/K-Station
driver packet in the Kontron Customer section or contact your local sales
support representative to get an application note about low level
programming.

5.5

JIDA Non-Volatile and CMOS Settings

The microETXexpress® -PV module allows saving the CMOS settings externally.
If the RTC battery fails to keep CMOS voltage at a certain level, the
external EEPROM restores the previous settings. If the CMOS is lost, all
previous settings are restored and an error message is displayed on the POST
screen: “CMOS Date/Time Not Set”.

From there, users have two choices: “Press F1 to Run SETUP” or “Press F2 to
load default values and continue”. If the choice is to keep all previous
settings, then Press “F1” and enter the new date and new hour. Press F10 to
save and exit. Your previous settings are set correctly and the time and