DDC’s AFDX®/ARINC Part 7 Switch provides the key element of an AFDX network—the physical infrastructure to interconnect end systems and regulate. The AFDXEnd System Pro is certifiable to civil aerospace standards and enables safety-critical data transfer between a computer and an AFDX switch. 10// Mbit/s 24+1 port AFDX® switch for rapid system development of all technical functionalities of TTTech’s certifiable AFDX production switches.

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In case you wish to receive additional information, send an e-mail to products tttech. The network is designed in such a way that all critical traffic is prioritized using QoS policies so delivery, latency, and jitter are all guaranteed to be within set parameters. Avionics Full-Duplex Switched Ethernet AFDX is a data network, patented by international aircraft manufacturer Airbus[1] for safety-critical applications that utilizes dedicated bandwidth while providing deterministic quality of service QoS.

It specifies interoperable functional elements at the following OSI reference model layers:. However, the number sub-VLs that may be created in a single virtual link is limited to four.

The switch must also be non-blocking at the data rates that are specified by the system integrator, and in practice this may mean that the switch shall have a switching capacity that is the sum of all of its physical ports. Webarchive template wayback links CS1 maint: ARINC utilizes a unidirectional bus with a single transmitter and up to twenty receivers.

Each VL is frozen in specification to ensure that the network has a designed maximum traffic, hence determinism. AFDX is a worldwide registered trademark by Airbus. Archived from the original PDF on This product provides the full range of technical functionalities of our certifiable production switches making it the optimal solution for various applications. The drawback is that it requires custom hardware which can add significant cost to the aircraft.


By adding key elements from ATM to those already found in Ethernet, and constraining the specification of various options, a swith reliable full-duplex deterministic network is created providing guaranteed bandwidth and quality of service QoS.

TTTech AFDX Switch » TechSAT

Further a redundant pair of networks is used to improve the system integrity although a virtual link may be configured to use one wfdx the other network only. The switches are designed atdx route an incoming frame from one, and only one, end system to a predetermined set of end systems. Also sub-virtual links do not provide guaranteed bandwidth or latency due to the buffering, but AFDX specifies that latency is measured from the traffic regulator function anyway.

AFDX Switch Lab This product provides the full range of technical functionalities of our certifiable production switches making it the optimal solution for various applications. ARINC operates in such a way that its single transmitter communicates in a point-to-point connection, thus requiring a significant amount of wiring which amounts to added weight.

There are two speeds of transmission: The addx link ID is a bit unsigned integer value that follows a constant bit field.

AFDX® / ARINC 664 Part 7 Switch for Flight Test

This is the maximum rate data can be sent, and it is guaranteed to be sent at that interval. From Wikipedia, the free encyclopedia. This page was last edited on 10 Novemberat Also the switch, having a VL configuration table loaded, can reject any erroneous data transmission that may otherwise swamp other branches of the network. Each switch has filtering, policing, and forwarding functions that should be able to process at least VLs.

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AFDX® Products | AIM – Online

AFDX was developed by Airbus Industries for the A, [3] initially to address real-time issues for flight-by-wire system development. Retrieved May 28, Bi-directional communications must therefore require the specification of a complementary VL.

There can be one or more receiving end systems connected within each virtual link. Many commercial aircraft use the ARINC standard developed in for safety-critical applications.

  IEC 60909 PDF

It utilizes dedicated bandwidth-regulated traffic control while providing deterministic Quality of Service QoS. A similar implementation [ clarify ] of deterministic Ethernet is used on the Boeing Dreamliner. There is no specified limit to the number of virtual links that can be handled by each end system, although this will be determined by the BAG rates and maximum frame size specified for each VL versus the Ethernet data rate.

Data are read in a round-robin sequence among the virtual links with data to transmit. Therefore, in a network with multiple switches cascaded star topologythe total number of virtual links is nearly limitless.

AFDX extends standard Ethernet to provide high data integrity and deterministic timing. However, total bandwidth cannot exceed the maximum available bandwidth on the network. Ethernet family of local area network technologies.

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Avionics Full-Duplex Switched Ethernet

AFDX Switch A Pro This high-performance port switch is certifiable to civil aerospace standards and supports bandwidth-regulated traffic filtering and policing.

Innovating together for the A XWB”. The service is based on standard IEEE The architecture adopted by AgustaWestland is centered around the AFDX data network developed for the latest commercial airliners. Office for Harmonization in the Internal Market.

By using this site, you agree to the Terms of Use and Privacy Policy. This type of network can significantly reduce wire runs and, thus, the overall weight of the aircraft. A data word consists of 32 bits communicated over a twisted pair cable using the bipolar return-to-zero modulation.