Qseven
Encyclopedia
Qseven, a computer-on-module
(COM) form factor, is small sized and highly integrated computer module that can be used in a design application much like an integrated circuit component. It's smaller than other computer-on-module
standards such as COM Express
, ETX
or XTX
but is limited to very low power consuming CPUs. The maximum power consumption is limited to 12 watt.
, RS-232
or EIDE
are not supported.
The current revision 1.20 was released September 10, 2010.
It's available from the Qseven consortium webpage.
Computer-on-module
A computer-on-module or System on Module is a type of single-board computer , a subtype of an embedded computer system. An extension of the concept of System on Chip , COM lies between a full-up computer and a microcontroller in nature.- Design :Today's COM modules are complete embedded computers...
(COM) form factor, is small sized and highly integrated computer module that can be used in a design application much like an integrated circuit component. It's smaller than other computer-on-module
Computer-on-module
A computer-on-module or System on Module is a type of single-board computer , a subtype of an embedded computer system. An extension of the concept of System on Chip , COM lies between a full-up computer and a microcontroller in nature.- Design :Today's COM modules are complete embedded computers...
standards such as COM Express
COM Express
COM Express, a computer-on-module form factor, is a highly integrated and compact PC that can be used in a design application much like an integrated circuit component. Each COM Express Module COM integrates core CPU and memory functionality, the common I/O of a PC/AT, USB, audio, graphics , and...
, ETX
ETX (form factor)
ETX, standing for Embedded Technology eXtended, is a highly integrated and compact computer-on-module form factor that can be used in a design application much like an integrated circuit component...
or XTX
XTX
XTX is a computer-on-module standard for x86-based embedded devices. XTX adds PCI-Express, SATA, and LPC capabilities. The standard was promulgated by Advantech, , and congatec.-External links:* *...
but is limited to very low power consuming CPUs. The maximum power consumption is limited to 12 watt.
Interfaces
The Qseven specification defines a rich set of legacy-free interfaces. Older interfaces like PCI, ISAIndustry Standard Architecture
Industry Standard Architecture is a computer bus standard for IBM PC compatible computers introduced with the IBM Personal Computer to support its Intel 8088 microprocessor's 8-bit external data bus and extended to 16 bits for the IBM Personal Computer/AT's Intel 80286 processor...
, RS-232
RS-232
In telecommunications, RS-232 is the traditional name for a series of standards for serial binary single-ended data and control signals connecting between a DTE and a DCE . It is commonly used in computer serial ports...
or EIDE
Eide
Eide is a municipality in Møre og Romsdal county, Norway. It is part of the region of Nordmøre. It is located on the Romsdal peninsula, along the Kornstadfjord and the Kvernesfjord. The administrative centre of the municipality is the village of Eide...
are not supported.
- 4× PCI ExpressPCI ExpressPCI Express , officially abbreviated as PCIe, is a computer expansion card standard designed to replace the older PCI, PCI-X, and AGP bus standards...
×1 Lanes - 2× SATASerial ATASerial ATA is a computer bus interface for connecting host bus adapters to mass storage devices such as hard disk drives and optical drives...
- 8× USBUniversal Serial BusUSB is an industry standard developed in the mid-1990s that defines the cables, connectors and protocols used in a bus for connection, communication and power supply between computers and electronic devices....
2.0 - 1× 1000BaseT EthernetEthernetEthernet is a family of computer networking technologies for local area networks commercially introduced in 1980. Standardized in IEEE 802.3, Ethernet has largely replaced competing wired LAN technologies....
- 1× SDIO 8-bit
- LVDS 2× 24-bit
- SDVO / HDMIHDMIHDMI is a compact audio/video interface for transmitting uncompressed digital data. It is a digital alternative to consumer analog standards, such as radio frequency coaxial cable, composite video, S-Video, SCART, component video, D-Terminal, or VGA...
/ DisplayPortDisplayPortDisplayPort is a digital display interface standard produced by the Video Electronics Standards Association . The specification defines a royalty-free digital interconnect for audio and video. The interface is primarily used to connect a video source to a display device such as a computer monitor...
(shared) - HDAIntel High Definition AudioIntel High Definition Audio refers to the specification released by Intel in 2004 for delivering high-definition audio that is capable of playing back more channels at higher quality than previous integrated audio codecs like AC'97...
(High Definition Audio) - I²CI²CI²C is a multi-master serial single-ended computer bus invented by Philips that is used to attach low-speed peripherals to a motherboard, embedded system, cellphone, or other electronic device. Since the mid 1990s, several competitors I²C ("i-squared cee" or "i-two cee"; Inter-Integrated Circuit;...
Bus - LPCLow Pin CountThe Low Pin Count bus, or LPC bus, is used on IBM-compatible personal computers to connect low-bandwidth devices to the CPU, such as the boot ROM and the "legacy" I/O devices . The "legacy" I/O devices usually include serial and parallel ports, PS/2 keyboard, PS/2 mouse, floppy disk controller...
(Low Pin Count Bus) - CAN bus (Controller–area network)
- SPISerial Peripheral Interface BusThe Serial Peripheral Interface Bus or SPI bus is a synchronous serial data link standard named by Motorola that operates in full duplex mode. Devices communicate in master/slave mode where the master device initiates the data frame. Multiple slave devices are allowed with individual slave select ...
(Serial Peripheral Interface Bus)
Connector
Qseven uses one 230 pin MXM2 SMT edge connector to connect all power and signal lanes to the carrier board. This connector is available from multiple vendors at different heights (5.5 mm and 7.8 mm).Specification
The Qseven specification is hosted by the independent Qseven consortium. It's freely available at the consortiums website.The current revision 1.20 was released September 10, 2010.
Design Guide
The Qseven design guide provides information for designing a custom system carrier board for Qseven modules. It includes reference schematics for the external circuitry required to implement various peripheral functions. It also explains how to extend the supported buses and how to add additional peripherals and expansion slots to a Qseven based system.It's available from the Qseven consortium webpage.