Congatec COM Express conga-B915 Manuel d'utilisateur télécharger pdf (Page 11)

ExpressCard

™

QsevenCOM ExpressXTX / ETX

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Qseven

™

- the mobile COM definition

Targeting next generation ultra mobile embedded processors built using 45 nm technology, the Qseven™ format

complements the low power and small size of these processors. By exploiting the small form factor of the

industry`s latest processors, the Qseven™ format offers high performance computing power, delivered in a mo-

dule measuring only 70 x 70 mm

Mobile Applications

Qseven™ is unlike previous Computer-On-Mo-

dules (COM) standards due to its primary focus

being directed towards mobile and ultra mobile

applications. It deﬁnes fast serial differential

interfaces such as PCI Express and Serial ATA but

omits support for legacy interfaces like EIDE and

PCI in order to provide ideal support for today as

well as future CPU's and chipsets.

Legacy free

Qseven™ is a legacy free standard and only

focused on high speed serial interfaces.

Compact Size

The module's dimensions are 70x70mm² only.

This means it can be easily integrated into size

constricted systems.

SDIO

When utilizing the SDIO interfaces, rugged and

cheap SD-Cards can be used as bulk memory.

Qseven™ deﬁnes an 8 Bit SDIO interface that is

capable of a maximum data transfer rate of 52

MByte/s. The Secure Digital standard also enables

other applications such as WLAN, Bluetooth, RFID

etc. while using the same card format.

Connector

Unlike most previous module standards, Qseven™

does not require an expensive board-to-board

connector. Instead, it utilizes a very affordable

MXM card slot with 230 pins in a 0.5 mm con-

ﬁguration.

This slot is already being used for graphics cards

in laptop computers, so it is capable of the high

speed PEG (PCI Express Graphics) data transfers.

This MXM slot connector is produced by three

manufacturers in two different heights and there

is also an inverted model available.

Graphics Interfaces

The video interfaces have been designed with

increased ﬂexibility. A total of four different output

possibilities are deﬁned. Direct control of a ﬂat

panel display via 2x24 Bit LVDS (Low Voltage

Differential Signal) with DisplayID and EPI panel

detection. The physical signals the SDVO port

are shared with DisplayPort and TDMS. A hot

plug mechanism detects what type of interface

is used and conﬁgures the graphics controller

accordingly.

PCI Express

Qseven™ offers up to 4 PCI Express™ x1 lanes.

This allows the customer to equip their embed-

ded PC application with the next generation of

PC performance. PCI Express™ is a serial inter-

face with maximum bandwidth of 2.5 GBit/s per

lane and direction.

Low Power

Qseven™ is deﬁned for a maximum power con-

sumption of 12 Watt operated by a single 5 Volt

DC power and provides all additional signals for

battery management. This simple power require-

ments allow for small mobile solutions powered

by compact two cell batteries.

Software API

Qseven™ embedded computer modules are

equipped with additional functions for industrial

applications such as Watchdog Timer, I²C Bus,

LCD brightness control, BIOS user storage area

and the reading of system temperatures. Due to

the fact that no standardized software interface

for these functions has been deﬁned to date, the

exchangeability of COMs can be more difﬁcult

than expected. In order to generally avoid the

software modiﬁcations that such situations would

require, the Qseven™ speciﬁcation includes a

consistent software API (Application Program

Interface). Qseven™ modules from different

manufacturers can thus be easily exchanged

without modiﬁcations to hardware or software. Qseven feature set

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Congatec COM Express conga-B915 Manuel d'utilisateur Page 11

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