Kontron COMe Starterkit Eval T2 Bedienungsanleitung PDF herunterladen (Seite 14)

Preface

1.9. Signal Table Terminology

Table 2 below describes the terminology used in this section for the Signal Description tables.

The “#” symbol at the end of the signal name indicates that the active or asserted state

occurs when the signal is at a low voltage level. When “#” is not present, the signal is asserted

when at a high voltage level.

The terms “Input” and “Output” and their abbreviations in Table 2 below refer to the Module's view, i.e.

an input is an input for the Module and not for the Carrier-Board.

Table 2: Signal Table Terminology Descriptions

Term Description

I/O 3.3V Bi-directional signal 3.3V tolerant

I/O 5V Bi-directional signal 5V tolerant

I 3.3V Input 3.3V tolerant

I 5V Input 5V tolerant

I/O 3V3_SBY Bi-directional 3.3V tolerant active during Suspend and running state.

O 3.3V Output 3.3V signal level

O 5V Output 5V signal level

OD Open drain output

P Power input/output

*_S0 Signal active during running state.

PCIE In compliance with PCI Express Base Specification

USB In compliance with the Universal Serial Bus Specification

GbE In compliance with IEEE 802.3ab 1000BASE-T Gigabit Ethernet

SATA In compliance with Serial ATA specification

REF Reference voltage output. May be sourced from a Module power plane.

PDS Pull-down strap. A Module output pin that is either tied to GND or is not connected. Used to signal

Module capabilities (pin-out type) to the Carrier Board.

PICMG

COM Express

Carrier Board Design Guide Rev. 2.0 / December 6, 2013

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Kontron COMe Starterkit Eval T2 Bedienungsanleitung Seite 14