The chip supports programmable LED output (Pin 35 in many configurations).
The 2021 datasheet positioned the RTL9210B as a single-chip, low-cost solution for external NVMe enclosures, docking stations, and embedded storage.
| Parameter | Specification | |-----------|----------------| | Part Number | RTL9210B | | Package | QFN-48 (6x6 mm, 0.4 mm pitch) | | USB Interface | USB 3.1 Gen 2 (10 Gbps) with Type-C support; backward compatible with USB 3.0/2.0 | | PCIe Interface | PCIe Gen 3 x2 (dual lanes, up to 8 GT/s per lane) | | Max Sequential Read | Up to 1050 MB/s (limited by USB 10 Gbps) | | Max Sequential Write | Up to 1050 MB/s | | Supported NVMe Spec | NVMe 1.3 (and most 1.4 drives with firmware update) | | Integrated LDOs | 3.3V, 1.2V, 0.9V – no external PMIC required | | Operating Temperature | 0°C to +70°C (commercial); industrial option available | | ESD Rating (HBM) | ±4 kV (USB pins) | | Firmware Storage | External SPI Flash (16 Mbit typical) |
The RTL9210B requires a 3.3V power input for the controller itself, but the NVMe drive requires 3.3V at high amperage.
When looking at the 2021 datasheets, the RTL9210B positioned itself as the "cool and stable" option:
The Realtek RTL9210B-CG is a dual-protocol USB bridge controller that enables high-speed data transfer between a USB host and either NVMe (PCI Express) or SATA storage devices. Key Technical Specifications (2021 Datasheet)
The controller is designed as a bridge between USB 3.1 Gen2 (10Gbps) and internal storage protocols. Specification USB Interface USB 3.1 Gen2 (up to 10Gbps); compatible with USB 2.0/3.0 PCI Express Gen3 x2 (up to 16GT/s); compatible with Gen1 and Gen2 SATA Interface SATA Gen3 (up to 6Gbps); backward compatible with Gen1/Gen2 Connector Integrated Type-C support with orientation detection Protocols UASP (USB Attached SCSI) and BOT (Bulk Only Transfer) Package 68-pin QFN Green package Core Functionality
Dual-Protocol Switching: Using the PEDET interface of the M.2 mechanical slot, the RTL9210B-CG
automatically switches between USB-to-PCIe and USB-to-SATA modes. Storage Support:
NVMe: Supports NVM Express Base Specification Rev. 1.3 with an embedded driver in RAM/ROM/SPI Flash. rtl9210b datasheet 2021
SATA: Acts as a SATA host supporting the AHCI (Advanced Host Controller Interface) for HDDs and SSDs.
Power Management: Features a built-in algorithm to balance performance and power consumption, including support for LTR (Latency Tolerance Reporting) and ASPM L1 substates.
Efficiency Features: Native support for TRIM commands ensures long-term SSD health by allowing proper garbage collection over USB. Performance and Compatibility RTL9210B-CG - Realtek
The RTL9210B is distinct for its "dual-protocol" support, allowing it to interface with both NVMe (PCIe) NGFF (SATA)
M.2 SSDs. This flexibility makes it a standard choice for "all-in-one" external drive cases. Key Technical Specifications Upstream Interface (USB): USB 3.2 Gen 2 with speeds up to
Backward compatible with USB 3.2 Gen 1, USB 2.0, and USB 1.1.
Includes a built-in Type-C connector controller with power role swap and cable orientation detection. Downstream Interface (Storage): NVMe Mode:
PCIe Gen3 x2 interface, supporting NVM Express (NVMe) 1.3 protocol. SATA Mode:
Supports SATA Gen3 (up to 6Gbps) and is backward compatible with Gen2/Gen1. Storage Capacity: Generally supports up to max capacity for attached SSDs. Advanced Features Protocol Management: (USB Attached SCSI Protocol) and commands for optimized data transfer and drive longevity. Power Management: The chip supports programmable LED output (Pin 35
Dynamically switches power states for NVMe/SATA/USB to save energy and balance performance. Internal Controller:
Embedded with customized RAM/ROM and SPI Flash to handle AHCI and NVMe drivers. Integration:
Integrated 5V to 1V switching regulator and support for GPIOs, eFUSE, and UART interfaces. Resources & Documentation RTL9210B-CG - Realtek
The Realtek RTL9210B is a versatile 68-pin QFN bridge chip supporting both NVMe (PCIe Gen3 x2) and SATA (Gen3) protocols, offering USB 3.2 Gen 2 (10Gbps) connectivity. As detailed in the RTL9210B-CG datasheet, this 2021-era standard for external enclosures provides TRIM support, efficient power management, and improved stability via firmware updates. RTL9210B-CG - Realtek
RTL9210B Datasheet 2021: A Comprehensive Overview
The RTL9210B is a highly integrated, high-performance USB-to-UART (Universal Asynchronous Receiver-Transmitter) bridge controller chip developed by Realtek Semiconductor Corporation. This chip is designed to provide a seamless interface between USB and UART, enabling efficient and reliable data transfer between devices. In this article, we will provide an in-depth analysis of the RTL9210B datasheet 2021, highlighting its key features, specifications, and applications.
Introduction
The RTL9210B is a USB-to-UART bridge controller chip that has gained significant attention in recent years due to its high performance, low power consumption, and compact design. This chip is widely used in various applications, including industrial control, automation, medical devices, and consumer electronics. The RTL9210B datasheet 2021 provides detailed information on the chip's architecture, functionality, and technical specifications, making it an essential resource for engineers, developers, and researchers.
Key Features
The RTL9210B datasheet 2021 highlights several key features that make this chip an attractive solution for USB-to-UART bridging applications. Some of the notable features include:
Technical Specifications
The RTL9210B datasheet 2021 provides detailed technical specifications for the chip, including:
Applications
The RTL9210B datasheet 2021 highlights various applications for the chip, including:
Conclusion
In conclusion, the RTL9210B datasheet 2021 provides a comprehensive overview of the chip's architecture, functionality, and technical specifications. The RTL9210B is a highly integrated, high-performance USB-to-UART bridge controller chip that is widely used in various applications, including industrial control, medical devices, and consumer electronics. Its high-speed USB interface, low power consumption, and compact design make it an attractive solution for engineers and developers looking to design and develop innovative products.
References
By understanding the RTL9210B datasheet 2021 and its technical specifications, engineers and developers can design and develop innovative products that take advantage of the chip's high-performance capabilities and low power consumption. Whether you're working on industrial control systems, medical devices, or consumer electronics, the RTL9210B datasheet 2021 is an essential resource that can help you get started with your design and development projects. The RTL9210B requires a 3