Rtl9210b Datasheet 2021 __top__ 📥

For engineers and DIY developers, a was shared among the developer community in 2021. It provides critical instructions for hardware system designers regarding low noise, power supply stability, and EMI reduction. For example, it emphasizes using a 4-layer PCB and placing specific capacitor configurations for the PCIe 1.1V power plane to ensure device reliability.

The RTL9210B achieved near line rate for USB 3.1 Gen 2 (~10 Gbps raw → ~1050 MB/s usable after overhead).

+-------------------+ | 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

While NVMe drives can easily exceed speeds of 3,500 MB/s (Gen 3) or 7,000 MB/s (Gen 4) internally, they are fundamentally limited by the USB interface when placed in an enclosure. According to the 2021 performance validation metrics: rtl9210b datasheet 2021

The RTL9210B is not a simple protocol converter; it contains several key internal blocks as detailed in the 2021 block diagram:

The RTL9210B chipset is well-regarded for its excellent thermal performance and low power draw. It includes an advanced algorithm to balance power consumption with performance, supports dynamic switching of power states for NVMe/SATA/USB power savings, and features a built-in switching regulator (5V to 1V) and an LDO (5V to 3.3V).

(from application note AN-2021-09): Via USB firmware update mode (hold RESET# and GPIO12 low during power-on) or using the Realtek Flash Tool over UART. For engineers and DIY developers, a was shared

Dictates how SMART commands, TRIM commands (via SCSI UNMAP), and hardware serialization are mapped between the host operating system and the storage media. 5. Hardware Reference Design Guidelines

Compliant with PCI Express Base Specification Revision 3.1a and NVM Express Base Specification Revision 1.3. It utilizes a PCIe Gen3 x2 interface, delivering up to 16 Gbps of bandwidth.

Built-in 5V to 3.3V LDO reduces the need for external components, simplifying board design 1.2.1. The RTL9210B achieved near line rate for USB 3

In real-world testing, the RTL9210B is noted for its thermal efficiency, often running cooler than competitors like the JMicron JMS583.

A full stack-up example for a 4-layer board is provided in the 2021 appendix.

The 2021 datasheet updates standardized configuration registers that can be modified via Realtek’s mass production software tool ( RTL9210B_ConfigApp ). Key configurable variables include: