This section is critical for power supply design. According to the 2021 document:
| Parameter | Symbol | Min | Max | Unit | | :--- | :--- | :--- | :--- | :--- | | Core Supply Voltage | VDD_CORE | -0.3 | 1.26 | V | | I/O Supply Voltage | VDD_IO | -0.3 | 3.63 | V | | PCIe Reference Clock | REFCLK | - | 100 | MHz | | Storage Temperature Range | T_STG | -55 | +150 | °C | | Operating Junction Temp | T_J | 0 | +85 | °C |
2021 Update: The datasheet explicitly warns that absolute maximum ratings for the 1.05V internal regulator should not be exceeded for more than 10 ms during power-on sequencing. Failure to follow this leads to latch-up in the PCIe PHY.
The 2021 datasheet provides updated power figures measured at 25°C ambient, with a Samsung PM981a 1TB NVMe SSD: rtl9210b datasheet 2021
| 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 |
Critical 2021 Note: The RTL9210B will begin thermal throttling at 85°C junction temperature, reducing PCIe width from x2 to x1. Without a copper pad under the QFN, the chip will hit 105°C and shut down within 90 seconds of continuous writing.
The 2021 datasheet organizes pins into the following groups (excerpt): This section is critical for power supply design
USB Interface (Type-C ready)
PCIe Interface (x2 lanes)
Power & Ground
Control & Status
The datasheet provides strict layout guidelines: PCIe differential pairs must be impedance-matched (85–100 Ω) with length matching within 5 mils.
Since the datasheet is NDA, most users rely on the MP Tool (Mass Production Tool) to configure the chip. The 2021 datasheet provides updated power figures measured