ARINC 664 P7 End System
- ARINC 664 End Systems adopt key elements from AFDX to standardize a deterministic network for aircraft, utilizing the IEEE 802.3 standard with data rates of either 10 Mbps or 100 Mbps or 1000 Mbps.
- The protocol is designed to provide deterministic timing and redundancy management.
- End systems exchange data frames through Virtual Links (VLs). Each VL defines a unidirectional connection from one source to one or more destinations.
- Traffic policing is managed according to the Bandwidth Allocation Gap (BAG)
- Redundancy is achieved by duplicating the connections, with frames transmitted concurrently on both networks to ensure continuous availability.
- For integrity, invalid frames are discarded by an integrity checker, which uses a sequence number check mechanism
iWave’s ARINC 664 end system IP core
iWave offers an ARINC 664 End System IP core that implements the ARINC 664 End system in compliance with ARINC 664 Part 7. The Key features supported by iWave’s ARINC 664 end system IP core are,
FUNCTIONAL SPECS
- Supports 128 Transmitting and Receiving VLs.
- Supports 128 Transmitting ports and 128 Receiving ports.
- Adjustable BAG values (1ms to 128ms).
- Supports 64 Bytes as Lmin and 1471 Bytes as Lmax.
- Redundancy enable/disable capability per VL.
- Integrity Checking enable/disable capability per VL.
INTERFACE SPECS
- AXI4 stream interface for host communication.
- End System configuration through AXI4 lite interface.
- 100 Mbps/1000 Mbps Ethernet speed.
iWave offers this IP core in two different architecture variants, each optimized for different system requirements.
- Variant with Multiple Stream interface with VL Isolation
In this variant, each Tx Port is associated with a dedicated Virtual Link (VL). The application logic sends data to the required Tx Port, and the MUX block combines all Tx Port streams into a single flow toward the UDP/IP stack which is then handled by the TRC and scheduler to send over redundant links.
On the receive side, Ethernet frames from the dual redundant links are handled by Integrity and Redundancy Checker modules which validates and discards corrupted or duplicate frames, and ensures only one valid frame is forwarded to Rx Port over separate AXI stream interface.
This variant provides following significant advantages,
- Supports one Port per VL
- Redundancy enable/disable capability per VL
- Integrity Checking enable/disable capability per VL
2. Variant with Single Stream Interface
The application AXI stream interface data is transmitted by the TX Logic of the ARINC 664 end system, where VL ID and BAG value is appended to the data at the Tx Logic. Unlike the multi-stream variant, this design does not maintain a separate data path for each VL instead, all VL data is multiplexed through a common transmission path.
On the receive side, Ethernet frames from the dual redundant links are handled by Integrity and Redundancy Checker modules which validates and discards corrupted or duplicate frames, and ensures only one valid frame is presented to the user over the AXI stream interface along with VL ID. Redundancy enable/disable capability as well as integrity Checking enable/disable capability is limited to per port.
This variant offers considerable advantages, positioning it as a highly efficient for the avionics application,
- Resource utilization is comparatively Lower
- Supports up to 1024 VLs
iWave’s ARINC 664 end system IP core transforms Ethernet into a deterministic and fault-tolerant communication backbone tailored for avionics. By integrating concepts such as Virtual Links, bounded jitter and latency, strict integrity checking, and dual network redundancy. Ensures robust, high-speed, and reliable data exchange for critical avionics applications, making it the backbone of communication in modern aircraft systems.
iWave’s ARINC 664 Tester Product:
iWave also offers an ARINC 664 Tester product that ensures compliance, robustness, and reliability of avionics networks by supporting redundancy handling, traffic shaping, and error injection features., it is ideally suited for verifying performance under real-world operating conditions. An intuitive GUI further enhances usability by allowing seamless configuration, monitoring, and visualization of system health and data flow as highlighted in the demonstration video.
For more information feel free to contact us at mktg@iwave-global.com
