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5 special features, 1 watchdog timer (wdt), 2 general purpose input and output (gpio) – Kontron COMe-cOHXX User Manual

Page 52: 3 acpi suspend modes and resume events, Special features, Watchdog timer (wdt), General purpose input and output (gpio), Acpi suspend modes and resume events, 5special features

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

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47

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

0

GPI0

A54

1

GPI1

A63

2

GPI2

A67

3

GPI3

A85

4

GPO0

A93

5

GPO1

B54

6

GPO2

B57

7

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