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PCIe Development Board, Time-Triggered Ethernet (TTE), ARINC 664 Part 7 (AFDX®), IEEE 802.3

The 79G5P is a full-height, half-length PCIe board with the NAI TE2 function module, which supports three traffic classes: Time-Triggered Ethernet SAE AS6802 (TTEthernet™), ARINC 664 Part 7, and Avionics Full-Duplex Switched Ethernet (AFDX®) with the IEEE 802.3 protocol. The TE2 is a single-channel, tri-redundant Ethernet communications interface module, making it an ideal solution for engineers planning to upgrade to either ARINC 664 Part 7 (AFDX) or TTEthernet protocols without changing hardware.

Providing the TE2 functionality on a standard PCIe form factor board, the 79G5P operates as an end system node, allowing for easy development and integration into standard motherboard or computer systems with a PCIe bus interface. Additionally, the 79G5P board can be configured to support the EM1 dual-port GbE Network Interface Controller (NIC) communications function module, and custom configurations are available.

TE2 Function
Arinc 664 Part 7 (AFDX) / TTE Comparison

Both ARINC 664 Part 7 (AFDX) and TTE provide time & safety-critical, data transmission and receipt through a single-channel, tri-redundant interface Ethernet module that can be optimized for specific applications. The major features of ARINC 664 Part 7 (AFDX) and TTE are listed below.

  ARINC 664 Part 7 (AFDX) TTE
Transmission Asynchronous Synchronous
Jitter Less than 500 μs Less than 1 μs
Latency (typical) 1-10 ms Less than 100 μs, at 12.5 us/switch
Communication PCIe Gen II (5.0 Gbps) Endpoint
Protocols: SAE AS6802 TTEthernet; ARINC 664 Part 7 (AFDX); IEEE 802.3
Ethernet Standards IEEE 802.3: 10BASE-T 100BASE-T 1000BASE-T
Block Diagram
2/2/2022 3:43:38 PM
Accelerate Your Time-to-Mission™ With COSA®

NAI’s Configurable Open Systems Architecture™ (COSA®) offers a choice of over 100 smart I/O, communication, and Ethernet switch functions, providing the highest package density and greatest flexibility of any multifunction I/O board in the industry. Preexisting, fully-tested functions can be combined quickly and easily in an unlimited number of ways. Choose the ideal platform for your application below. Each I/O function has dedicated processing, unburdening the system Single Board Computer (SBC) from unnecessary data management overhead.

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