Boston — The AXIe consortium today announced the Optical Data Interface (ODI), a technical standard for connecting test instruments that have applications in 5G, mil/aero, and software-defined radio (SDR). As communications data rates increase and the amount of data collected by test systems balloons, copper-based communications have a hard time keeping up.
The ODI standard defines a communications link that uses a common connector and is based on established communications protocols from the Interlaken Protocol standard. Although the AXIe consortium oversees ODI, the communications link isn't limited to test-and-measurement applications.
Keysight Technologies, Guzik, Samtec, Conduant, Xilinx, and Intel have announced that they explicitly endorse ODI, with Keysight, Guzik, Samtec, and Conduant all announcing that they will develop ODI products. Samtec will offer 24-fiber ODI cables in standard lengths. Intel will support ODI in its upcoming Stratix 10 FPGA products. Both Intel and Xilinx have long supported the Interlaken Protocol in their FPGAs. Guzik recently announced AXIe digitizer and DSP modules that already have ODI ports. The photo below shows Guzik's ADP7104 digitizer and two DP7000 signal processors in a Keysight AXIe chassis. Each module has four ODI ports for data (right side) and one ODI port for control (left side) (click image to enlarge).
Guzik's ADP7104 AXIe digitizer module has four ODI ports, providing up to 80 Gbytes/s of data transfer. Source: Guzik
Just how much data can pass through an ODI link? The physical layer, defined in the ODI Standard, defines 12 lanes that can run at either 12.5 Gbps or 14.1 Gbps. That results in a data rate of 160 Gbps or 20 Gbytes/s per cable, which can be multiplexed to provide up to 80 Gbytes/s, as shown in the Guzik module above. Link length can reach up to 100 m. ODI cables use the common Multi-push-on connector (MTP), which Samtec and others supply.
An ODI cable uses Multi-push-on connectors. Source: Samtec
Looking for more on the ODI link? Larry Desjardin provides a technical overview on EE Times' sister publication, EDN.
See New optical interface standard aims at 5G.
covers test and measurement for EE Times
. Contact him at email@example.com