Microchip - Tell me about INIC Part 1 "IP communication with INIC???"

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IP communication with INIC? ? ?

question!

Is IP communication possible with INIC based on MOST?

：

answer

yes. Is possible!

Recently, Ethernet technology is being implemented in automobiles, but long before that, INIC has supported the Ethernet Channel function according to the MOST standard. In order to realize this function easily, the mechanism of INIC itself is a key point, but the software perspective is also an important point.

As mentioned earlier, Linux already supports the INIC driver, but using this driver makes the INIC look like a NIC (network interface controller) at the OS level. This driver is a device that facilitates software implementation on the application interface.

Therefore, using INIC and the MOST Linux driver, in addition to streaming data such as audio/video, it is possible to superimpose IP data communication and realize data transfer between ECUs.

As mentioned above, using INIC makes it easy to implement not only from a hardware perspective but also from a software perspective.

Use case for transferring IP data with INIC

One possible use case is that in rear seat entertainment systems, IP data transfers such as TCP/UDP can be handled by an INIC, which has the advantage of reducing the need for separate Ethernet-specific ICs and physical layers (cables/connectors). INICs that support Ethernet Channel functions are available in 50M and 150M models. Some may wonder if 50M or 150M is not enough in terms of total bandwidth, but for video-on-demand applications, if a stable bandwidth of around 10M can be secured, it is considered to be a necessary and sufficient data bandwidth.

From another perspective, there is the OTA (reproduction) function of ECUs in automobiles. This function using telematics ECUs is already being implemented in mass-produced cars, but in the future, it is also possible that data for this function will be transferred in IP data format when it is transferred between infotainment ECUs.

INIC is capable of folding and transferring various data formats, including audio, video, control, and IP data, so it is expected to find even more applications.

Continued in the next article (Tell me about INIC Part 2 "Transferring Hi-RES audio with INIC???")