Rtl9210b Datasheet 2021 Jun 2026
Utilizes the legacy AHCI protocol over a SATA interface, maxing out at roughly 600 MB/s.
Requires an external 25 MHz crystal with a precise ppm rating to drive the internal PLLs cleanly, ensuring low jitter across the USB transceiver.
datasheet from Arrowasia and SilverStone documentation , the controller boasts the following features: USB Interface rtl9210b datasheet 2021
| Firmware Version | Release Date (approx.) | Key Fixes and Improvements | |------------------|------------------------|----------------------------| | | July 29, 2021 | Improved stability for Samsung 980 Pro and WD SN550; fixed power LED behavior; safe eject now properly indicates drive readiness | | v1.29.12.011122 | January 11, 2022 | Fixed compatibility with Samsung Data Migration Tool and Samsung M.2 SSDs | | v1.30.21.070622 | July 6, 2022 | Improved random 4K read performance for faster system boot and application loading | | v1.32.87.082923 | August 29, 2023 | Fixed Linux USB instability with Solidigm P41 Plus and Samsung 980 Pro | | v1.32.903.011325 | January 13, 2025 | General SSD compatibility enhancements |
: Acts as a SATA host supporting the AHCI (Advanced Host Controller Interface) for HDDs and SSDs. Utilizes the legacy AHCI protocol over a SATA
is a single-chip USB-to-PCIe/SATA bridge controller developed by Realtek. It acts as the intermediary between a USB host (PC, laptop, console) and an M.2 SSD (NVMe or SATA), allowing external drives to utilize the full speed of the USB 3.2 Gen 2 standard 1.2.1. By 2021, the Go to product viewer dialog for this item.
+-------------------+ | RTL9210B-CG | | | USB_TX+/- ──(90Ω)──► Pin 12, 13 | USB_RX+/- ──(90Ω)──► Pin 15, 16 | | | PCIE_TX+/- ─(85Ω)──► Pin 54, 55 | PCIE_RX+/- ─(85Ω)──► Pin 58, 59 | +-------------------+ Impedance Matching 13 | USB_RX+/- ──(90Ω)──► Pin 15
| State | USB Link | Current (5V) | Power | Temp Rise | | :--- | :--- | :--- | :--- | :--- | | Sleep (ASPM L1.2) | Suspend | 58 mA | 0.29 W | +2°C | | Idle (no trim) | Gen 2 (10G) | 320 mA | 1.6 W | +12°C | | Sequential Write (4KB) | Gen 2 (10G) | 890 mA | 4.45 W | +38°C | | Thermal Throttle (85°C) | Gen 1 (5G) | 610 mA | 3.05 W | N/A |
This article is a technical reconstruction based on the (v1.4, released June 2021) and associated application notes.
solidified itself as the preferred controller over the older RTL9210 (non-B) model, offering better compatibility, lower power consumption, and improved thermal management 1.2.4 . 2. Key Features and Technical Specifications According to the RTL9210B-CG Go to product viewer dialog for this item.
For hardware developers, it is important to distinguish between two variants of the chip: