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The RTL8111F-CGT is a highly integrated Gigabit Ethernet controller chip from Realtek, specifically designed for PCI Express interfaces, and is suitable for network connectivity requirements in motherboards, laptops, servers, and embedded systems.

RTL8111F-CGT Core Features

Triple-speed Ethernet support:

Compliant with IEEE 802.3 (10Mbps), IEEE 802.3u (100Mbps), and IEEE 802.3ab (1000Mbps) standards.  

Supports CAT 5 UTP cable (Gigabit) and CAT 3 UTP cable (10Mbps).  

PCI Express 1.1 Interface:

Features a single-channel 2.5 Gbps data rate, supports lane polarity reversal and link reversal, optimising PCB layout.

Low Power Consumption and Power Management:

Supports ACPI (Advanced Configuration and Power Interface), optimising operating system power management.

Compliant with IEEE 802.3az-2010 (Energy Efficient Ethernet, EEE), reducing power consumption during low link utilisation.

Supports remote wake-up (WOL), including AMD Magic Packet and Microsoft Wake-up Frame.

Advanced Data Optimisation:

Supports cross-detection and automatic correction, adaptive equalisation, and crosstalk cancellation to improve signal integrity.

Supports 9K-byte jumbo frames to enhance large data transmission efficiency.

Provides hardware checksum offloading (IPv4/IPv6/TCP/UDP) to reduce CPU load.

Embedded OTP memory:

Replaces external EEPROM (93C46/93C56/93C66) to simplify design.

RTL8111F-CGT packaging and operating parameters

Package: 48-QFN (environmentally friendly package)  

Operating voltage: 1.8V / 2.5V / 3.3V  

Operating temperature: Industrial standard

RTL8111F-CGT Typical Applications

Motherboard-integrated gigabit network card  

Laptop PCIe network card  

Server/workstation network interface  

Industrial embedded systems

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