The DS99R421QSQ is a highly integrated FPD-Link III serializer from Texas Instruments (formerly National Semiconductor). This device is designed to transmit high-speed video data and control signals over a single differential pair, reducing system cost, cable size, and weight. The DS99R421QSQ integrates advanced features for automotive display applications, including bidirectional control channel communication.

Applications

• Automotive infotainment systems
• Automotive instrument clusters
• Advanced Driver-Assistance Systems (ADAS) displays
• Rear-seat entertainment systems
• Industrial display systems

Features

• FPD-Link III serial output
• High-speed data rates up to 2.5 Gbps
• Bidirectional control channel (Back Channel)
• Integrated spread spectrum clocking (SSC)
• Adaptive equalization
• On-chip PLL
• Power-down mode
• AEC-Q100 qualified for automotive applications
• Small package size

Benefits

• Reduced system cost and complexity
• Improved EMI performance
• Enhanced signal integrity over long cables
• Simplified system design and layout
• Reduced cable size and weight
• Robust communication in harsh automotive environments
• Lower power consumption

Additional Details

The DS99R421QSQ supports high-resolution displays with fast refresh rates. The bidirectional control channel allows for communication from the display back to the host processor, enabling features such as touch screen control and display diagnostics. The integrated spread spectrum clocking helps to reduce EMI emissions, which is crucial in automotive applications. The adaptive equalization compensates for signal losses in the cable, ensuring reliable data transmission. The device operates from a single 3.3V power supply. It is designed to work with a compatible deserializer, such as the DS99R422, to form a complete FPD-Link III solution.

Note: This part is marked as END-OF-LIFE, meaning it may no longer be actively manufactured. Consider checking with TI or distributors for availability and potential replacement options.