SerDes Logging Adapter

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SerDes Logging Adapter – our key to the safe validation of autonomous driving functions

Semi-autonomous and autonomous vehicle functions must be validated in the development phase of different vehicle classes. This results in enormous amounts of data generated by cameras, lidar systems, radar, and other sensors.

These data have to be interpreted by many control units in the vehicle to enable autonomous driving later. Our SerDes Logging Adapter family (SLA family) supports you in recording the enormous variety of data in test vehicles and using it for various validation phases. As a member of the Automotive SerDes Alliance (ASA), we also promote the standardization of SerDes technology in the automotive market.

The challenge

As high-resolution cameras are increasingly used in vehicles, high data rates are generated on the signal path between sensors and control unit.

On the one hand, the difficulty lies in forwarding the data to the receiver control unit with low latency without disturbing normal operation. On the other hand, the data packets must be time-stamped at the same time, optionally compressed live, packaged and finally sent to a data logger.

The solution

Our SerDes Logging Adapter (Serializer/Deserializer Logging Adapter), SLA for short, ensures all these challenges. It serves as a data bridge between the sensors and the ECUs. In doing so, it manages the data

  • lossless and without noticeable delays to the control unit,
  • provides them with high-precision time stamps,
  • and passes the data on to a data logger.

Applications

Data recording in a test vehicle

SLA will forward the sensor data to the ECU for normal in-vehicle processing. In parallel the SLA will time-stamp the received data, optionally compress, packetize, and send it via one or multiple 10Gb/s Ethernet ports to the data logger.

Re-Injection of the data in an open-loop HiL environment

Monitor how the system reacts in any scenario recorded in the past (reproducible validation scenarios). The SLA receives the recorded data pack via one or multiple 10Gb/s Ethernet ports.

Then the data is unpacked and decompressed while the original data stream will be reconstructed packet by packet. The SLA sends the data stream to the ECU with the exact same timing the packets were recorded.

Injection of the data in a closed-loop HiL-environment

The SLA receives simulated data, packs it that will be unpacked and used to generate a data stream the SLA will send to the ECU with minimal latency. The simulation computer usually evaluates the ECU reaction simultaneously and adjusts the rendered data stream accordingly.

Providing testing solutions for all types of testing tasks

SLA-1C-GMSL

  • 1 Channel variant.
  • Maxim/Analog Devices GMSL2 SerDes Link.
  • 6 Gbps, coaxial.
  • 10 Gbps Ethernet via SFP+.
User Instructions Manual (PDF, 1 MB)

SLA-1C10-FPD4

  • 1 Channel variant.
  • Texas Instruments newest SerDes Link.
  • 6 Gbps, coaxial.
  • 10 Gbps Ethernet via SFP+.

SLA-1S-GMSL

  • 1 Channel variant.
  • Maxim/Analog Devices GMSL2 SerDes Link.
  • 6 Gbps, Shielded Twisted Pair (STP).
  • 10 Gbps Ethernet via SFP+.
User Instructions Manual (PDF, 1 MB)

SLA-4C-GMSL

  • 4 Channel variant.
  • Maxim/Analog Devices GMSL2 SerDes Link.
  • 4 x 6 Gbps, coaxial.
  • 30 Gbps Ethernet.
User Instructions Manual (PDF, 1 MB)

SLA-4C10-FPD

  • 4 Channel variant.
  • Texas Instruments FPD-Link III.
  • 4 x 4,15 Gbps, coaxial.
  • 10 Gbps Ethernet via SFP+.
User Instructions Manual (PDF, 1 MB)

SLA-4C20-GMSL3

  • 4 Channel variant.
  • Maxim/Analog Devices GMSL3 SerDes Link.
  • 4 x 12 Gbps, coaxial.
  • 2 x 10 Gbps Ethernet via SFP+ data link (logging device).

Download-Center

SerDes Logging Adapter

As a registered user you have access to many important materials in our download center, e.g. data sheets, tutorial videos etc.
Click on download

SLA accessories

SLA – DCDC – 30W

The galvanically isolated power supply for the SLA is specially designed for automotive test setups and prevents ground loops, especially when using coax signal lines.

  • Wide input voltage range.
  • Up to 30 W output power.
  • Two wake-up pins.
User Instructions Manual (PDF, 980 KB)

SLA EXTENSION BOX

An SLA Extension Box is used to record additional protocols. The adapter board is often used to record debug interfaces of an ECU or other interfaces parallel to the sensor data.

  • Many supported interface types, such as Ethernet RGMII (1Gbit/s), MIPI CSI-2.
  • High-precision time stamping including external synchronization by SLA.

ETHERNET LOGGING ADAPTER SATELLITE

The ELA-SAT is the perfect complement to be able to log also automotive ethernet with our SLA family. It can be easily connected to the SLA and enables an all-in-one verification solution for autonomous driving. Once the ELA-SAT is paired with the SLA, you have the advantages to log MIPI CSI-2 video data and 100BASE-T1/1000BASE-T1 together by only using one SFP+ port on your logging device (DLM).

  • 100BASE-T1/1000BASE-T1 automotive Ethernet logging with high-precision timestamping
  • Low latency, transparent Ethernet forwarding
  • One 100BASE-T1/1000BASE-T1 twin-port for logging and forwarding

Software

HiL-Framework

Our software application allows you to unpack recorded sensor data live in your HiL system and finally send it to your ECU (re-injection).

  • Used in open-loop HiL environments as data injection.
  • Reinjection of recorded scenes stored in PCAP or MDF format.
  • High computing efficiency for the lowest possible hardware requirements for the computer.
  • Total application data rate up to 15 Gbit/s (3 Gbit/s for each SLA – could be higher or lower depending on the performance of the computer).
  • High accuracy time synchronization.
  • And more …

Decompression software

Highly optimized OpenCL-based decompression algorithm.

  • Uses GPU as well as multi-core and many-core CPU processing power.
  • PCAP file format.
  • Supports row-based compressed recorded data.
  • High performance due to massively parallel processing
    Lossless JPEG-1.

MDF compression/decompression software

Part of the complete tool chain for validation systems.

  • Flexibility by compression and decompression algorithm.
  • MDF file format.
  • Lossless JPEG-1 and LZRW1-A.
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