Navigating the Move to Wi-Fi 6E: Insights from Silex and NXP

Transitioning to Wi-Fi 6E offers massive performance gains but introduces new complexities in platform integration. Following our technical webinar with NXP Semiconductors, attended by over 250 industry professionals, we have compiled the most critical engineering questions regarding the SX-SDMAX6E (based on the NXP IW623 chipset).

This guide provides the architectural validation needed to move your design from prototype to production.

Beyond Data Sheets: Accessing Reference Designs for Rapid Hardware Integration

The Question: Is this reference design available in its native format (like Altium, instead of .pdfs/gerbers)?

The Answer: Silex does not design the chipset; NXP does. We use NXP’s chipset to build our module. While the native Altium files reside with the chipset manufacturer, Silex provides the complete Gerber files under an NDA agreement to assist with your custom carrier board layout and integration.

Modern Linux Architecture: Ensuring 64-Bit Compatibility and Kernel Stability

The Question: In my experience with SX-SDMAH, the Linux driver only supports 32-bit and older kernels. What Linux kernel will the SX-SDMAX6E run on?

The Answer: The SX-SDMAX6E is based on the NXP IW623 chipset, and the Linux driver is provided in collaboration with NXP. The driver is optimized and validated specifically for NXP’s i.MX platforms. Unlike previous generations, the reference drivers for i.MX8 and i.MX9 support 64-bit architecture.

The Roadmap to Reliability: Silex Driver Support and NXP BSP Alignment

The Question: What is the policy for updating Silex Wi-Fi drivers to new Linux kernel versions? Does Silex follow NXP BSP releases only or support integration against newer kernel versions?

The Answer: Silex follows NXP’s BSP releases; NXP chooses which version they decide to use. Our Wi-Fi driver support is strictly aligned with NXP’s BSP releases and roadmap. We validate and maintain driver compatibility within the kernel versions provided as part of the official NXP Linux/Yocto BSP.

For kernel versions outside of the NXP BSP, integration may be possible; however, this is not part of our standard validation scope and may require additional porting effort depending on the specific kernel and platform. If you have a particular kernel version in mind, we can help assess feasibility.

Seamless Synchronization: Integrating Wi-Fi 6E into Your Existing Ecosystem

The Question: How do we easily synchronize Silex with our existing system?

The Answer: Integration of the SX-SDMAX6E depends on the target platform and kernel environment. The module is based on the NXP IW623 chipset, and our drivers are aligned with NXP BSP releases. As a result, integration is most straightforward on NXP i.MX platforms using supported BSP versions.

For other platforms or custom kernel versions, integration is typically feasible but may require additional effort, such as driver porting and system configuration. If you share more details about your platform and Linux version, we can provide specific guidance.

Beyond Linux: Extending Wi-Fi 6E to Real-Time Operating Systems (RTOS)

The Question: Is there a plan for RTOS support, such as FreeRTOS, Zephyr, etc.?

The Answer: Currently, we do not provide standard off-the-shelf RTOS drivers for the SX-SDMAX6E. However, Silex has extensive experience developing drivers for embedded RTOS environments, including FreeRTOS, VxWorks, and QNX. For example, we have successfully delivered FreeRTOS drivers for our previous Wi-Fi 5 modules.

We are confident that we can support RTOS integration for the SX-SDMAX6E as a custom development project. If RTOS support is required for your application, please let us know your requirements so we can discuss the best path forward.

Optimizing the Host: Hardware Requirements for Peak Wi-Fi 6E Performance

The Question: What device specs matter most to get the full 6E benefit?

The Answer: Wi-Fi 6E reaches its full potential only when both the module and the host system are optimized. To achieve full performance, the host system must support:

• High SDIO throughput and adequate CPU/memory resources.
• Correct MIMO-capable antennas specifically designed for the 6 GHz band.
• Operation within a region with 6 GHz regulatory allowance.
• Proximity to Wi-Fi 6E Access Points (APs).

Ready to Validate Your Wi-Fi 6E Design?

Integrating Wi-Fi 6E into a custom system architecture requires precision and technical alignment. Whether you need access to our detailed design files or a compatibility assessment for your specific platform and kernel version, our engineering team is ready to help you move from prototype to production.

Contact us to discuss your specific hardware requirements.