: Supports SATA Gen3 (6Gbps) and is backward compatible with SATA Gen2/Gen1. It uses the AHCI interface for communication.
If you want to look deeper into the specific pinout diagrams, registers, or electrical characteristics for a hardware build, please let me know.
: Compliant with the PCI Express Base Specification Revision 3.0 and NVM Express Base Specification Revision 1.3. It utilizes up to two lanes (Gen3x2) for internal bandwidth configurations up to 16Gbps .
The RTL9210B comes in a 68-pin QFN (Quad Flat No-leads) package. Understanding the pinout is essential for anyone designing a custom PCB. The pins are categorized by function: rtl9210b datasheet
Realtek offers a variant of this chip, the , which adds support for USB Power Delivery (PD) over the Type-C connector. This feature allows a single USB-C cable to deliver power to the SSD enclosure and the connected computer, making it ideal for portable, bus-powered storage solutions.
The RTL9210B is a highly integrated and cost-effective USB-to-Ethernet controller that supports USB 2.0 and IEEE 802.3/802.3u standards. The chip's single-chip design, low power consumption, and comprehensive software support make it suitable for a wide range of applications, including:
features an . This allows it to bridge both modern high-performance NVMe drives and older, cost-efficient M.2 SATA SSDs to a host device through a single USB Type-C port. 1. Architectural Overview & Block Diagram : Supports SATA Gen3 (6Gbps) and is backward
: Automatically switches between USB-to-PCIe mode and USB-to-SATA mode. Speed : Supports USB 3.1 Gen 2 with bandwidth up to 10Gbps .
This comprehensive guide serves as an architectural overview and technical datasheet reference for hardware engineers, developers, and tech enthusiasts. 1. Architectural Overview and Core Features
When evaluating the RTL9210B, it is frequently compared to other major bridge chips like the JMicron JMS583 and the ASMedia ASM2362 (for NVMe-only use cases). The RTL9210B is distinguished by its ability to handle both SATA and NVMe SSDs on a single board. This unique feature, combined with its excellent power efficiency and stable performance, has made it a favorite in the DIY community. It is generally praised for lower heat generation compared to some of its competitors and superior compatibility with various host systems. Common products using this controller include those from brands such as Orico, Ugreen, Qwiizl, ITGZ, and JEYI. : Compliant with the PCI Express Base Specification
Feeds the internal logic cores, I/O pads, and integrated voltage regulators. VCC10 , VCC33 , AVDD10 , AVDD33 , LX System Peripheral Support
is a high-performance USB bridge controller designed to interface USB hosts with both and SATA storage devices. Its primary advantage over the standard RTL9210 is its "dual-protocol" capability, which allows it to automatically switch between NVMe and SATA modes based on the connected M.2 drive. Core Specifications Upstream Interface USB 3.1 Gen 2 (up to 10Gbps) Downstream Interface 1 PCIe Gen3 x2 (up to 16GT/s) Downstream Interface 2 SATA Gen3 (up to 6Gbps) Protocols Supported NVMe (PCIe) and AHCI (SATA) Package 68-pin QFN Green package Power Management
: Supports external SPI Flash for customized firmware, programmable LEDs (blinking frequency/duty cycle), and GPIO/UART/I2C interfaces. Variant Differences : The RTL9210BPD
When an M.2 NVMe SSD is inserted, the chip provisions a . The integrated NVMe physical layer (PHY) and protocol driver are embedded within the chip's customized RAM/ROM architecture.