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The RTL8221BI-VB-CG is a highly integrated Ethernet PHY transceiver compatible with 10BASE-TE, 100BASE-TX, 1000BASe-T, and 2.5GBASE-T, and is fully compatible with the IEEE 802.3 standard and the nBase-T™Alliance PHY. It provides all the necessary physical layer functionality to transmit and receive Ethernet packets over Cat.5e UTP cables.

The transceiver uses state-of-the-art DSP technology and analog front end (AFE) to enable high-speed data transmission and reception over UTP cables.

The data transfer between the MAC and PHY takes place via the SERDES (Serializer - deserializer) interface, which supports SGMII, HISGMII, and 2500BASE-X. The RTL8221BI-VB-CG operates at a variety of digital I/O voltages, including 3.3V and 1.8V.

Features

Compatible with IEEE 802.3, IEEE 802.3U, IEEE 802.3AB

Support IEEE 802.3az (Energy Efficient Ethernet)

Support IEEE 802.3bz (2.5GBASE-T)

Supports full-duplex flow control (IEEE 802.3x)

Support for IEEE 802.3 optional features (energy efficient Ethernet and fast retraining)

Integrated 10M Base-TE and 100M/1000M/2.5GBase-T IEEE 802.3-compatible transceivers

Supports 2.5G Lite (1G data rate) mode

Automatic negotiation with extended Next Page function (XNP)

Compatible with the NBASE-TTM Alliance PHY specification

Supports line pair exchange/polarity/skew correction

Cross detection automatic correction

Configurable MDI port ordering (MDI switching) for easy PCB layout

Supports the hardware CRC (Cyclic redundancy check) function

Supports power saving or link down power saving mode

Support for Article 22 and 45 MDC/MDIO management interfaces

Rate adapter that supports SERDES

Optional SERDES interface to MAC control (SGMII/HISGMII/2500 Base-X)

Built-in LAN Wake-up (WOL) based on UTP

Supports interrupt function on UTP

Support parallel detection

Support PHYRSTB core power off

Baseline drift correction

Optional 3.3/1.8V signal for MMD access

Supports 25MHz crystal oscillator or external OSC

Provides a 25MHz clock source for Mac devices

Offers 3 network customized leds with controlled LED flicker frequency and duty cycle

Self-loopback diagnostic function

Thermal management on PHY

48-pin QFN green package

22nm process, ultra-low power consumption

Full hardware support for synchronous Ethernet and Precise Time Protocols (PTP), including IEEE 1588v1, v2, and 802.1as

Supports SPI flash memory (up to 24MB flash size)

Industrial grade Manufacturing process (RTL8221BI-VB/RTL8221BI-VM)

• 1.Is the inventory and price seen on the platform accurate?

  A: all online goods on the shelves can be ordered online, but considering the large liquidity of spot inventory, it is not possible to achieve 100% accuracy at present. In case of any abnormality, you can contact our company online and give the corresponding solution.

• 2.Are all our products genuine?

  A: our self-supporting products are from cooperative domestic and foreign original factories or authorized agents, and the source can be traced to ensure the original and authentic products.

• 3.Can you provide the qualification certificate of the original factory or agent?

  A: at present, our self-employed brands TI，ST，ADI，NXP，LATTICE，CYPRESS，INFINEON，XILINX and other first-line brands. Other channels are the original factory and agency channels. If necessary, we can communicate and confirm according to the specific brand and model.

• 4.Can I make an inquiry through the company's website?

  A: You can inquire through the website, or by phone and email.

• 5.When can I deliver the goods after placing an order? How long will it take to get there?

  A: the delivery date is marked in most commodity information. You can estimate the delivery time of the commodity according to the delivery date. The specific arrival time depends on the warehouse where the commodity is located and the logistics mode you choose.

• 6.Can the company issue an invoice?

  A: you can issue ordinary invoices for individual users or special VAT invoices for enterprise users.