Issue link: https://te.mouser.com/i/1349122
Car Connectivity based on Automotive Ethernet MATEnet interconnection system provides bandwidth, flexibility and reliability Page 11 Car Connectivity based on Automotive Ethernet MATEnet interconnection system provides bandwidth, flexibility and reliability TE AUTOMOTIVE /// White Paper | Car Connectivity based on Automotive Ethernet 5 | THE NANOMQS TERMINAL NanoMQS interconnection tech- nology was developed for motor vehicle connectors. The core of the technology is the receptacle contact (or terminal). The min- iaturized NanoMQS receptacle contacts are designed for a 1.8 millimeter nominal pitch, (Fig. 6). They can be used to termi- nate very fine wires with cross sections as small as 0.13 mm 2 . Multiple design features ensure that the interconnection system can be handled safely in a fully automated process despite small wire cross sections and compact crimp terminals. NanoMQS con- nectors are very robust, as stan- dard unsealed NanoMQS connectors meet severity level 2 vibration requirements (around 3g effective random and 30g shock). Sealed connector versions can also meet vibration level 3 ("close to powertrain") and 4 ("engine mounting"). 6 | FUTURE POTENTIAL — PoDL — Currently electronic devices in the car are supplied with electricity over separate cables. However, the additional cables make the harness heavier and more complex and make it more difficult to feed parts of the harness through narrow passageways in the vehicle body. It would therefore be a contribution to downsizing and light-weighting of the harness, if separate power lines were not necessary. The new con- cept of Power-over-Data-Line (PoDL) supports this strategy in vehicle applications. It uses the 100Base-T1 und 1000Base-T1 interfaces to supply power parallel to the signal on a single unshielded twisted pair. The standard for PoDL was defined by the IEEE Task Force 802.3bu. Its work was completed with the approval of IEEE Std 802.3bu-2016 by the IEEE-SA Standards Board on 7 December 2016. By using an additional filter circuit signal and power can be transmitted with minimal interferences via 1 wire pair and can be separated at the device. TE is testing PoDL in combination with MATEnet and will validate this option within the MATEnet interconnection system. Testing so far has been very positive and indicates a beneficial use with up to 48 VDC. — Automotive Audio Bus® — TE also sees potential for MATEnet as interconnection technology for the Automotive Audio Bus® (A2B), developed by Analog Devices. This digital audio bus with up to 50 Mbit bandwidth was designed to reduce the weight of high fidelity wiring for automobiles while significantly reducing the weight of existing cable harnesses. Fig. 6: The NanoMQS receptacle contact mates with 0.5 x 0.4 mm tabs