Rtl9210b Datasheet 2021 [new] Jun 2026

For hardware development, detailed 2020-2021 period documentation includes: Official Datasheet RTL9210B-CG Datasheet Rev 1.1

The is a high-performance USB 3.2 Gen 2 to PCIe Gen 3 x2/PCIe Gen 2 x1 Bridge Controller. It is widely used in NVMe SSD enclosures (M.2 to USB adapters) due to its low power consumption and thermal management.

Embedded with customized RAM/ROM and SPI Flash to handle AHCI and NVMe drivers. Integration:

| Parameter | Specification | |-----------|----------------| | | RTL9210B-CG (Standard); RTL9210BPD-CG (with Power Delivery) | | Package Type | QFN-68 (68-pin Quad Flat No-lead, 8mm x 8mm) | | USB Interface | USB 3.2 Gen2x1 (up to 10 Gbps), backward compatible with USB 3.1/3.0/2.0 | | PCIe Interface | PCIe Gen3 x2 (up to 16 Gbps), backward compatible with Gen2/Gen1 | | SATA Interface | SATA Gen3 (up to 6 Gbps), backward compatible with Gen2/Gen1 | | Supported Flash | 32MB/512KB external SPI Flash | | Core Processor | 250MHz MIPI CPU | | Clock Source | 25MHz crystal oscillator | | Key Peripherals | UART, GPIOs, eFUSE, I2C, Customizable LED control | | Power Regulation | Built-in switching regulator (5V to 1V) + LDO (5V to 3.3V) | | Protocol Support | BOT, UASP, NVMe, AHCI | | Package Dimensions | 8mm x 8mm, 0.5mm pitch | | Operating Temperature | -40°C to +85°C (industrial grade) | rtl9210b datasheet 2021

The chip typically integrates a low-dropout (LDO) regulator and a switching buck regulator to convert the host's 5V USB VBUS down to the 3.3V and 1.0V rails needed by the internal logic and the SSD. 5. Firmware Customization and Configuration

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A critical inclusion in the 2021 specifications is an internal operational thermal sensor. If the internal chip temperature crosses a pre-configured factory threshold (typically around 75°C to 85°C), the chip automatically throttles data transmission speeds. This drops power draw and cools down the system before hardware damage or data corruption occurs. 5. Summary of Practical Applications This link or copies made by others cannot be deleted

is a highly versatile USB bridge controller designed to interface between USB hosts and both PCI Express (PCIe) and SATA storage devices. Released as an evolution of the original RTL9210, the "B" variant gained significant traction in due to its unique "dual-protocol" support, allowing a single external enclosure to house either an NVMe or a SATA M.2 SSD. Core Technical Specifications

For engineers, developers, and tech enthusiasts, the reveals a powerful, versatile, and well-supported bridge controller. Its ability to seamlessly switch between NVMe and SATA protocols, combined with comprehensive software support, makes it a cornerstone of modern external storage design. Whether you are designing a new product, updating firmware, or simply troubleshooting an external enclosure, the detailed features outlined in this article should provide a solid foundation for your work on the RTL9210B.

The 2021 bridge controller market was highly competitive, with multiple suppliers offering USB-to-NVMe and USB-to-SATA solutions. Key competitors to the RTL9210B included: power management profiles

Some users have reported occasional issues, but these are usually resolvable with proper firmware updates:

The Realtek RTL9210B is a high-performance, low-power bridging controller designed to connect PCIe and SATA storage devices to USB hosts. The release of its 2021 datasheet finalized key hardware specifications, power management profiles, and firmware customization capabilities. This architecture made it the industry standard for dual-protocol M.2 NVMe/SATA USB enclosures.

Beyond its core bridging functionality, the RTL9210B ecosystem supports an interesting application-level feature: . Realtek collaborated with ELAN Electronics to integrate a fingerprint recognition module that works in conjunction with the bridge chip.