Rtl9210b Datasheet: 2021

The SATA host implements the protocol, which is the standard interface for SATA storage devices. Like the NVMe stack, the AHCI driver is embedded within the chip’s firmware, enabling plug-and-play operation with SATA-based M.2 drives.

One notable open-source project describes a with a BOM cost of approximately ¥50 RMB (roughly $7–8 USD at 2021 exchange rates), demonstrating the chip’s cost-effectiveness for high-volume applications.

The RTL9210B is a USB-to-SSD bridge controller developed by Realtek Semiconductor, a globally recognized leader in communications and multimedia ICs. In 2021, as the demand for high-speed external storage surged with the widespread adoption of NVMe SSDs and USB 3.2 Gen2 interfaces, the RTL9210B stood out from the competition due to its unique —capable of interfacing with both NVMe (PCIe) and SATA M.2 SSDs on a single platform.

Supports SuperSpeed USB Plus (10 Gbps), SuperSpeed (5 Gbps), HighSpeed (480 Mbps), and FullSpeed (12 Mbps) transfer rates. rtl9210b datasheet 2021

The chip boasts auto-switching between USB-to-PCIe and USB-to-SATA modes.

The official datasheet (Rev 1.1) outlines the following core capabilities:

The 2021 datasheet highlights major advancements in thermal and power efficiency over previous generations like the RTL9210. The SATA host implements the protocol, which is

| 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) |

The RTL9210B is housed in a compact, QFN68 green package (8mm x 8mm). The 2021 datasheet outlines specific pin allocations to ensure signal integrity and proper power sequencing across split voltage domains. Critical Pin Groupings

Supports SATA Gen3 (6Gbps) and is backward compatible with Gen2/Gen1. The RTL9210B is a USB-to-SSD bridge controller developed

: Supports PCIe L1.Off/L1.Snooze and USB link power management to reduce energy consumption. : Supports both Bulk Only Transfer (BOT) USB Attached SCSI Protocol (UASP) for improved data transfer efficiency. Drive Features : Fully supports S.M.A.R.T.

Utilizes the PCIe protocol, offering high bandwidth and low latency, capable of several gigabytes per second.

: Supports external SPI Flash for firmware, UART interfaces, and programmable GPIOs for customized LED behavior (e.g., blinking patterns during data access). Package : Compact 68-pin QFN "Green" package. RTL9210 vs. RTL9210B