RTL8111H-CG

The RTL8111H-CG is a highly integrated Gigabit Ethernet controller from Realtek, designed for PCI Express applications. It supports 10/100/1000 Mbps speeds and features advanced power management, including IEEE 802.3az (Energy-Efficient Ethernet).
Key highlights:
- PCIe 2.0 x1 interface for high throughput.
- Supports Wake-on-LAN (WoL) and Jumbo Frames (up to 9KB).
- Compliant with IEEE 802.3, 802.3u, 802.3ab standards.
- Includes Realtek Auto-Negotiation for optimal link speed.
- Low power consumption with advanced power-saving modes.
Commonly used in motherboards, NICs, and embedded systems, the RTL8111H-CG offers reliable performance with driver support for major OSes (Windows, Linux, macOS). Its compact 48-pin QFN package makes it suitable for space-constrained designs.
A cost-effective solution for Gigabit Ethernet connectivity, it balances performance and efficiency for consumer and industrial applications.

The RTL8111H-CG is a Gigabit Ethernet controller by Realtek. Equivalent or similar chips include:
- RTL8111E/F/G: Earlier versions with comparable features.
- RTL8168H: Higher-end variant with similar functionality.
- Intel 82574L: Competing Gigabit controller from Intel.
- Broadcom BCM5761: Alternative from Broadcom.
These chips offer Gigabit Ethernet support and are used in motherboards, NICs, and embedded systems. Check datasheets for exact compatibility.

The RTL8111H-CG is a Gigabit Ethernet controller by Realtek with these key features:
- Interface: PCI Express 2.0 (1-lane, 5 Gbps).
- Speed: 10/100/1000 Mbps auto-negotiation.
- Advanced Power Management: Supports ASPM (L0s/L1) and ACPI for energy efficiency.
- Jumbo Frames: Supports up to 9 KB for improved throughput.
- Compatibility: IEEE 802.3, 802.3u, 802.3ab standards.
- Virtualization: Supports SR-IOV (Single Root I/O Virtualization).
- Security: Supports IEEE 802.1Q VLAN tagging and 256-bit AES encryption.
- Driver Support: Windows, Linux, FreeBSD, and macOS.
- Package: 48-pin QFN (6x6 mm).
Ideal for desktops, embedded systems, and networking applications.

The RTL8111H-CG is a Gigabit Ethernet controller from Realtek, featuring a 48-pin QFN (Quad Flat No-leads) package.
### Key Functions:
- PCIe Interface: Supports PCI Express 1.1 (2.5 GT/s).
- PHY Integration: Built-in 10/100/1000BASE-T transceiver.
- Energy Efficiency: Supports IEEE 802.3az (EEE) for low power consumption.
- Advanced Features: Supports jumbo frames, VLAN tagging, and Wake-on-LAN (WoL).
### Pin Functions (Selected):
- PCIe Pins: Differential pairs for TX/RX (PERN, PERP, PETN, PETP).
- PHY Pins: MDI (RJ-45) interface (TXP/TXN, RXP/RXN).
- Power Pins: Multiple 1.2V, 3.3V, and analog power inputs.
- Control Pins: Reset (RST#), clock (25MHz), and LED indicators.
This compact IC is commonly used in motherboards and NICs for wired Gigabit Ethernet connectivity.

The RTL8111H-CG is a Gigabit Ethernet controller by Realtek, commonly used in:
1. Desktop PCs & Motherboards – Integrated into consumer and business systems.
2. Embedded Systems – IoT devices, industrial PCs, and automation.
3. Network Appliances – Routers, NAS, and firewalls.
4. Gaming & Workstations – High-speed LAN connectivity.
5. Thin Clients & POS Systems – Reliable wired networking.
It supports PCIe interfaces, energy-efficient features, and advanced traffic management, making it versatile for wired networking needs.

The RTL8111H-CG is a Gigabit Ethernet controller from Realtek, typically available in a 48-pin QFN (Quad Flat No-leads) package. This compact, surface-mount package is designed for high-performance networking applications, offering efficient thermal dissipation and space-saving integration. The "CG" suffix often denotes RoHS compliance and specific manufacturing revisions.