Solution Block Diagram & Core Components

Figure: High-level block diagram of the capture solution.

The core of this solution is the MS2130, which interfaces directly with the HDMI source (e.g., a gaming PC or console) and handles the conversion to a USB 3.0 UVC-compliant stream. The surrounding components include:

• USB 3.0 Controller: Manages the high-speed data transfer between the MS2130 and the host PC. This can often be integrated into the main PCB's chipset (e.g., on a motherboard) or be a discrete PHY if designing a standalone capture card/adapter.
• Memory (SDRAM): Buffering is essential for handling high-resolution video streams. The MS2130 typically requires external SDRAM for frame buffering and processing.
• Power Management Unit (PMU): Regulates and supplies stable power (often 3.3V and 1.2V) to the MS2130 and other components. Proper power delivery is critical for stable operation.
• Passive Components: Resistors, capacitors, and inductors for power filtering, signal integrity, and basic circuit functions.

Core Advantages

• High Resolution: Supports up to 4K@30Hz capture, meeting the demands of modern gaming.
• Low Latency: The MS2130 provides excellent real-time capture performance, crucial for interactive streaming.
• UVC Compliance: Ensures easy plug-and-play integration with standard streaming software (OBS, XSplit, etc.) without requiring proprietary drivers.
• Compact BOM: Minimizes the number of external components required, reducing system complexity and cost.
• Robust Design: Proven in the market, offering reliable performance for continuous use.

Design Considerations & Optimization

Building a successful 4K capture device involves more than just connecting the MS2130. Key considerations include:

• PCB Layout: High-speed USB 3.0 and HDMI traces require careful PCB layout with controlled impedance, proper grounding, and shielding to prevent interference and maintain signal integrity.
• Power Supply: Clean, well-regulated power is essential. Power noise can manifest as artifacts in the captured video. Adequate decoupling capacitors near the MS2130 are required.
• Thermal Management: Under sustained load, the MS2130 can generate heat. Proper thermal design, including potential heatsinks or thermal vias, ensures stable performance and longevity.
• UVC Configuration: The MS2130's UVC descriptors define the video formats it supports (e.g., MJPEG vs. uncompressed YUV). Optimizing these descriptors can balance bandwidth usage against host CPU load.
• Host Software: While the MS2130 is UVC compliant, the performance and features can also depend on the streaming software's efficiency in handling the UVC stream.

Recommended BOM (Conceptual)

Note: The above BOM list is a conceptual example. Actual selection depends on specific design requirements, cost targets, and availability.

Applications

• High-end gaming capture cards
• Professional streaming hardware
• Recording devices for 4K content
• Integration into streaming PCs or AIO solutions

Integration & Support

Integrating the MS2130 into a complex system requires careful attention to hardware design and potentially custom firmware development for specific features or optimization. LiTong Group offers comprehensive support, including reference designs, technical documentation, and direct FAE assistance, to help you successfully bring your 4K capture product to market.