In recent years, the demand for applications requiring high-speed data transmission has continued to grow, driven by the use of in-vehicle cameras for sensing, 360-degree views, and the integration of displays for meters and entertainment purposes.
Cameras and displays are advancing in high resolution, and to transmit this increasing amount of digital data, a communication bandwidth of Gbps is required. However, there are several challenges to address.
The first aspect is the need for high image quality and low latency in video, while the second aspect involves long-distance transmission and an increase in the number of cameras installed. The higher the image quality of the camera, the clearer it can capture distant signs and people, which is particularly important for autonomous driving, where identification accuracy is required.
Electronic mirrors and backup monitors require low latency and real-time video display, as even a slight delay in the driver's judgment can lead to accidents.
Next, it is necessary to transmit the rear camera's video to the front display using a cable that is several meters long. As the cable length increases, the parasitic impedance of the cable also increases, leading to attenuation of high-frequency signals. Additionally, since multiple cameras and sensing applications are often installed, issues such as increased cable weight, crosstalk, and EMI (electromagnetic interference) also become problematic.

As a solution to these challenges, Analog Devices offers GMSL products.
GMSL is a SerDes (Serializer/Deserializer) technology that enables low-latency, high-speed transmission over a single cable by converting parallel signals from devices such as cameras into serial signals using a serializer, and embedding the clock signal onto the data line using embedded clock technology. On the receiving side, a deserializer converts the serial signal back into its original parallel form and restores the clock using Clock Data Recovery (CDR) technology.
By using GMSL, it is possible to transmit data at high speed over distances of approximately 10 meters.
The GMSL product lineup is broadly divided into two categories: display applications and ADAS applications. On this page, we introduce an example of a product designed for ADAS applications.

MAX96706 (Deserializer) / MAX96707 (Serializer) - Achieves a maximum transmission rate of 1.5 Gbps in a compact package.

Typical Application Circuits

• Ideal for Safety Camera Applications
• 1.5 Gsps Coax and STP serial link compatible with megapixel cameras
• The control channel operates at 9.6 kbps to 1 Mbps (I2C with clock stretching)
• Reduces EMI and shielding requirements (output spectrum spreading feature)
• Includes a built-in PRBS generator for BER testing as a verification peripheral function
• Complies with AEC-Q100 automotive specifications
• 32-pin (5mm × 5mm) TQFN/SWTQFN package (MAX96706)
• 24-pin (4mm × 4mm) TQFN package (MAX96707)

Simplified Block Diagram

Ordering Information

Ordering Information

EVKIT

MAX96706COAXEVKIT#　MAX96707COAXEVKIT#