company blog about Mingjiada Electronics Supply TI WL18XXCOM82SDMMC WiLink SDIO Board, COM8 To SDMMC Adapter

Mingjiada Electronics Supply TI WL18XXCOM82SDMMC WiLink SDIO Board, COM8 To SDMMC Adapter

Shenzhen Mingjiada Electronics Co., Ltd. — Long-term supply of [TI] WiLink SDIO Board WL18XXCOM82SDMMC: COM8 to SDMMC Adapter. Product details are as follows:

TI WiLink SDIO Board WL18XXCOM82SDMMC, designed as an SDMMC adapter specifically for COM8-packaged wireless modules, serves as a critical hardware carrier for evaluating and mass-producing WiLink8 series modules. Its flexible connectivity, comprehensive debugging support, and broad platform compatibility make it indispensable.

I. Product Positioning: The Bridge Between Wireless Modules and Host Platforms
The WL18XXCOM82SDMMC is fundamentally a high-performance adapter board whose core mission is to establish a seamless connection between WiLink COM8 evaluation modules (such as WL1837MODCOM8i and WL1835MODCOM8B) and host processor EVMs (evaluation boards). It implements SDIO protocol communication for Wi-Fi modules via a standardised SDMMC interface while providing Bluetooth UART interface expansion. This resolves compatibility issues between differing voltage domains and interface types, significantly reducing integration

complexity between wireless modules and host platforms.

Moreover, the WL18XXCOM82SDMMC adapter functions not merely as a simple interface component but also possesses the attributes of an independent evaluation platform. For WiLink module/chip solutions featuring a PCB 100-pin edge connector, it enables full-function debugging and performance calibration when paired with TI's wireless PC debugging tool, providing end-to-end support for the development process.

II. Core Features: Balancing Compatibility, Usability and Scalability
The WL18XXCOM82SDMMC design aligns closely with practical embedded development requirements, demonstrating significant advantages in interface adaptation, voltage regulation and debugging support. Its core features include:

1. Flexible Interface Adaptation Capability
The WL18XXCOM82SDMMC adapter primarily supports SDMMC interface connectivity, enabling seamless integration of WiLink8 series COM8 modules into host platforms' standard SD/MMC card slots for rapid Wi-Fi deployment. Simultaneously, it provides Bluetooth UART interfaces via 20-pin FPC connectors or cables, accommodating dual-mode Wi-Fi and Bluetooth communication requirements to fulfil diverse wireless connectivity scenarios. Furthermore, the onboard PCM interface option enables host-driven PCM functionality via FPC connectors or external cables, extending capabilities such as audio transmission.

2. Wide Voltage Range Compatibility Design
Addressing IO voltage discrepancies between host platforms and wireless modules, the WL18XXCOM82SDMMC adapter integrates 3V to 1.8V level shifters. Multiple jumpers allow flexible interface voltage configuration. Specifically, the Bluetooth PCM, Bluetooth UART, WLAN SDIO, and Bluetooth/Wi-Fi enable signals all support 1.8V/3.3V voltage switching (default 3.3V). This enables compatibility with processor platforms featuring different voltage specifications, such as TI Sitara AM335 and AM437, thereby enhancing hardware versatility.

3. Comprehensive Power Supply and Control Mechanisms
Regarding power provision, the WL18XXCOM82SDMMC adapter offers three 3.3V power supply options. Power can be selected via jumpers from the SD connector, FPC connector, or the on-board LDO. The on-board LDO requires power from the USB interface, meeting diverse power supply requirements across different application scenarios. For control, dedicated Bluetooth enable (BT_EN) and Wi-Fi enable (WL_EN) buttons are provided alongside support for host control mode. Control sources can be switched via jumpers for flexible and convenient operation.

III. Hardware Architecture: Precision Design Ensures Stable Operation
The hardware design of the WL18XXCOM82SDMMC centres on reliability and scalability, with its core architecture comprising four major modules: connectors, jumper configuration, control components, and auxiliary circuits.

IV. Typical Application Scenarios
The WL18XXCOM82SDMMC adapter primarily targets development and evaluation scenarios for embedded wireless communication products, particularly suited for projects based on TI Sitara AM335, AM437, and similar processor platforms. Common applications include industrial control equipment, smart gateways, and consumer electronics terminals requiring dual-mode Wi-Fi and Bluetooth communication. It enables rapid prototype validation and functional testing of wireless modules, accelerating time-to-market. Additionally, as a standalone evaluation platform, the WL18XXCOM82SDMMC facilitates performance testing, troubleshooting, and algorithm optimisation for WiLink modules.

WL18XXCOM82SDMMC stands as an ideal component for developing WiLink8 series COM8 modules, owing to its flexible interface adaptation, wide voltage compatibility, comprehensive debugging support, and broad platform compatibility. For further product information regarding the WL18XXCOM82SDMMC or to enquire about samples, please visit Mingjiada Electronics' official website (https://www.integrated-ic.com/) for detailed supply information.