DISPLAY & UI
Rutronik F
PGA-based interface bridges play a crucial role in complex automotive enabling consistent connectivity between distances.
The proliferation of cameras and displays in modern vehicles has revolutionised the systems and new entertainmen t options challenge for car manufacturers: ensuring seamless connectivity and interoperability between the various systems. One of the biggest challenges is managing local connectivity within the vehicle.
Fast, reliable, and over longer distances
MIPI (mobile industry processor interface) protocols on higher layers are commonly used in vehicles to connect sensors and displays with domain control units and other onboard computers. To facilitate traditionally transmitted using source- synchronous interfaces like MIPI D-PHY and MIPI C-PHY. While these interfaces are struggle with data transmission over longer distances within the vehicle.
like MIPI A-PHY have been adopted for distributing cameras and displays within the vehicle. A-PHY is an asymmetrical data link in a point-to-point topology that enables with embedded bidirectional control data and optional power supply via a single cable.
The use of A-PHY allows suppliers to distances – cable lengths of up to 15 meters communication between various vehicle
Figure 1: Distribution of cameras and displays in modern vehicles (source: MIPI Alliance)
differential wire pairs in a single shielded jacket. This enables the use of two A-PHY weight and complexity compared to using two separate coaxial or shielded twisted pair cables.
Bridge between various interface protocols
standards entails a number of challenges. Different suppliers use proprietary to compatibility issues and fragmented ecosystems. To simplify the introduction use programmable FPGA-based interface bridges.
These versatile solutions act as a bridge between different interface protocols and the vehicle architecture. FPGA-based interface bridges enable the integration of initialisation of various components (Fig. 2).
Camera and display interfaces in automotive applications for seamless connectivity
Figure 2: FPGAs can serve as intelligent interfaces between components that utilize different standards or protocols (source: MIPI Alliance)
26 SEPTEMBER 2025 | ELECTRONICS FOR ENGINEERS
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