Congatec COM Express conga-B915 Instrukcja Użytkownika Pobierz pdf (Strona 42)

ISA Bus

PCI Bus

4x USB 2.0

Mic In (Mono)

Line In (Stereo)

Line Out (Stereo)

EIDE 1+2

Ethernet

SM Bus

I²C Bus 400 kHz

Speaker

Power Control

Power Management

VGA

TV-Out

LCD (LVDS or TTL)

COM1+2

IrDA

LPT/Floppy (shared)

ETX

- the concept

PCI Bus

The 32 bit parallel PCI bus can be utilized to

control multiple I/O devices on the customized

carrier board.

ISA Bus

The ISA bus is mainly used for slow speed devices.

Audio

Most ETX

modules offer onboard audio features.

The ETX

speciﬁcation deﬁnes a mono micro-

phone input and stereo line in and line out

analog signals.

High Speed USB

ETX

offers four USB 2.0 ports.

I²C Bus

Many embedded devices such as sensors,

converters or data storage can be connected to

the I²C bus interface. Due to the simple protocol

and the high availability of devices, the I²C Bus

is a frequently used low speed bus interface in

embedded applications. congatec understands

this and therefore has chosen to offer 400 kHz

multi-master I²C bus that provides maximum I²C

bandwidth.

Ethernet

A 10/100 MBit Ethernet controller is already imple-

mented at the ETX

module. All signals are con-

nected to the customized carrier board utilizing

the high density board to board connectors.

Graphic Interfaces

Most ETX

modules are equipped with onboard

graphic controllers. Displays or monitors can be

connected using VGA and LVDS signals. Some

modules offer direct TTL signals as an alternative

to LVDS.

Heatspreader

ETX

deﬁnes a heatspreader that covers the

complete top side of the module and acts as a

thermal interface to the cooling solution within

the application. All heat generating components

are thermally conducted to the heatspreader in

order to avoid hot spots.

Upgrade to XTX™

Applications which do not utilize the ISA bus can

directly upgrade to XTX modules. The signals at

connectors X1, X3 and X4 are equal to ETX

Only the signals at the X2 connector have been

redeﬁned in order to support PCI Express, SATA,

LPC and more. Existing ETX

carrier boards can

easily be upgraded to take advantage of these

new and fast interfaces.

ETX

was one of the very first Computer-On-Module concepts ever. It was defined in 1998 by JUMPtec as an open

standard. ETX

is a well established and highly successful standard. It offers most standard PC I/O’s on a compact

form factor.

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