How does GMSL Technology Work?
The working principle of GMSL (Gigabit Multimedia Serial Link) is based on the Serializer/Deserializer (SerDes) technology to enable high-speed, long-distance data transmission. The specific process is as follows:
1. Data Capture (Image Sensor)
The image sensor (e.g., AR0231) can capture image or video data and convert the optical signals into digital signals (typically in parallel format). Then the parallel data is transferred to the serializer via the specific interface (such as MIPI CSI-2, or GMSL).
2. Serialization (Serializer)
The serializer converts the parallel signals into a high-speed serial data stream, effectively reducing the number of required data lines and simplifying the system.
3. Data Transmission
Then the serialized data is transmitted over a coaxial cable or shielded twisted pair cable (such as FAKRA Cable, HFM Mini Fakra cable, and HSD cable), which not only supports long-distance data transmission (typically up to 15 meters or more), but also prevents EMI interference to maintain signal integrity.
4. Deserialization (Deserializer)
The Deserializer is located at the receiving end. It can revert the serial data to its original parallel form for further processing and analysis.
5. Data Processing
Next the parallel data is delivered to the processing unit (such as a CPU, GPU, and FPGA) for further processing, analysis, or control.