Gigabit Multimedia Serial Link, commonly referred to as GMSL, is a serial link technology that is used for video distribution in cars. It was developed by Maxim Integrated. Maxim Integrated was acquired by Analog Devices[1][2] in 2021.
GMSL is an asymmetric, full duplex SerDes technology - which means that it transports data at a high rate in the downlink (or forward) direction, while simultaneously transporting a lower data rate in the uplink (or reverse) direction. It transports power, bidirectional control data, Ethernet, bidirectional audio and multiple streams of unidirectional video[3] simultaneously over a single coaxial cable or shielded twisted pair cable. A GMSL serializer receives video from a standard digital video interface such as HDMI, DisplayPort, Camera Serial Interface (CSI-2) or Display Serial Interface (DSI) over a cable up to 15 meter in length.[4] The data is received by a deserializer that outputs it on another standard digital video interface. GMSL video transport may be unprotected or encrypted using HDCP.[5]
^Matheus, Kirsten; Kaindl, Michael (2023). Automotive High Speed Communication Technologies. Munich, Germany: Carl Hanser Verlag. pp. 207–210. ISBN 978-3-446-46918-1.
^Terzis, Anestis (2016). Handbook of Camera Monitor Systems, The Automotive Mirror-Replacement Technology based on ISO 16505. Switzerland: Springer. pp. 279–280. ISBN 978-3-319-29609-8.
^Wong, William G (5 December 2017). "GMSL: Automotive Multistreaming with a Single Cable". Electronic Design.
^"Complex but necessary technology for automotive: Serial links re-visited". edn.com. 2 January 2018. Retrieved 23 February 2023.
^Hammerschmidt, Christoph (24 April 2011). "HDCP GMSL chipset enables secure transmission of digital content in cars". eeTimes. Retrieved 23 February 2023.
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