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This table will provide you with a more comprehensive overview of our APIX3 products.

The full-featured Inova products based on APIX3 technology are currently available for purchase!


The third generation of APIX (APIX3) is targeted to address the enhanced requirements for Infotainment and Cockpit architectures in vehicles. Those architectures support multiple automotive UHD resolutions in car displays based on the most recent and future generations of high performance SoC.


The new APIX3 technology supports transmissions of up to 6 Gbps over one shielded twisted pair (STP) cable and up to 12 Gbps over a quad twisted pair (QTP) connection. This is four times the speed of the previous APIX2 generation. APIX3 supports video with HD and Ultra HD displays.


APIX3 offers a number of unique features for in-car video, such as:


Enables the transmission of multiple video channels on one connection (which supports advanced cockpit architectures);


Provides advanced diagnostic capabilities, including cable monitoring, for preventative detection of cable degradation.


By supporting different cable media (such as STP, QTP and coaxial), APIX3 reduces the cost of cables to car manufacturers, OEMs and Tier 1 suppliers. It provides scalable bandwidth, which means it can be used from entry-level to high-end systems.


The APIX3 IP is available for licensing and Socionext is its first licensee. Inova is also working with its partners to establish a full supporting ecosystem, including cables and connectors.


The new APIX3 technology is backward compatible with APIX2. It provides full duplex communication channels, and an active equalizer to automatically adjust to transmission lines individually, thus allowing plug and play connectivity. It also provides compensation for cable aging and temperature.


Please be aware that all INAP59x products are HDCP enabled and require an active license before they can be purchased or shipped. For more information, please visit the DCP website.


APIX3 follows safety-relevant (ISO26262) applications, and meets automotive EMI and robustness requirements.

The APIX2 technology, integrated in INAP375T transmitter and INAP375R receiver devices, offers high speed differential data transmission over a single twisted pair (STP) cable.

Based on current mode logic, the physical layer drives up to 12 meters of cable at 3Gbps and up to 40 meters at 500Mbps. The serial link interface consists of the downstream link, capable of supporting bandwidth modes of 500Mbps, 1Gbps and 3Gbps at lowest EMI. The optional upstream link provides bandwidth modes of 62.5Mbps and 187.5Mbps. It is transferred as a separate differential signal and enables full-duplex data communication and GPIO capabilities.

At link level, APIX2 uses transmission frames, which are dynamically filled with either video, audio, GPIO or AShell data, depending on the configuration of the link and the application requirements at each interface. This flexible configuration allows APIX2 to be optimized for various applications.

Upon connection of an APIX2 transmitter to a receiver, the receiver automatically starts to “scan” the incoming data stream of the transmitter, then recovers and synchronizes to the clock, and receives “frame-alignment” as soon as it successfully locked to the frame structure.

Since this structure is based on various configuration options, it is necessary that transmitter and receiver are configured correctly to the same key frame parameters for link speed, data bandwidth, AShell, GPIO channels and audio channel to reach frame-alignment.

The automotive shell (AShell), a protection protocol for ASIL-conformal transmission of safety-relevant data, has been optimized in APIX2. AShell2 produces virtually no more overhead for error free data transmission, an innovation compared to other guard protocols.

The internal AShell provides error corrected data re-transmission from the receiver to the transmitter and vice versa. It ensures that the receiving side of the AShell will only offer error free data to the application.

The error detection is based on a CRC sum, generated at the transmit path and checked at the receive path. The AShell executes transmission and reception of application data ensuring data integrity, and supply of information about transmission link status, as well as simple errors to the application.

The APIX2 functionality of the INAP375R has evolved from the established first generation APIX devices INAP125T and INAP125R, already offering a 1 Gbps video link in combination with full-duplex data communication over 2 pairs of wire. This technology has also been licensed to other semiconductor vendors, allowing the integration of the transmitter and receiver IP into customized or application specific devices.

In order to keep compatibility to already available devices, the INAP375R offers two modes of operation: APIX1 Mode compatible to INAP125T/R and 3rd party APIX1 implementations and APIX2 Mode with full functionality. The APIX mode needs to be set by the respective boot-strap pin of the device.