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Kontron COMe-cOH2/COMe-cOH6 User’s Guide

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5 Special Features

5.1 Watchdog Timer (WDT)

The watchdog timer is managed via the super I/O component, the Nuvoton

NCT5577D.

The implementation complies with the COM Express® specification. Timer modes

1, 2, and 3 are supported. For additional implementation information, refer

to the PICMG COM Express® Design Guide on the PICMG website

5.2 General Purpose Input and Output (GPIO)

The COMe-cOH# COM provides four interrupt-capable general purpose inputs and

four general purpose outputs that can be accessed through the module

connector described in the pin-out lists, in Section 4.1. The GPIO interface

can be enabled in the BIOS setup.

Table 14: GPIO COM Express Pin-Outs

Bit of GPIO

Port0

Function

COM Express Pin

GPI0

A54

GPI1

A63

GPI2

A67

GPI3

A85

GPO0

A93

GPO1

B54

GPO2

B57

GPO3

B63

5.3 ACPI Suspend Modes and Resume Events

The COMe-cOH# COM supports the following suspend modes:

» S0 (Normal on)

» S3 (Suspend to RAM)

» S4 (Suspend to Disk)

» S5 /WOL(soft-off, WOL enabled)

» S5 (soft-off, WOL disabled)

» S5 ECO deep soft-off

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