Item specifics
Description
KTI225LM Product Overview
The Intel Ethernet Controller KTI225LM is a high-performance, low-power single-port multi-gigabit Ethernet controller from Intel, part of the I225-LM series. Housed in a 56-pin QFN (7×7mm) compact package， the KTI225LM supports 2.5Gbps high-speed network transmission while remaining backward compatible with 1000BASE-T, 100BASE-TX, and 10BASE-TE. The KTI225LM connects to the host system via a PCI Express 3.1 (5 GT/s) interface, integrating a complete Gigabit MAC and PHY with MDI (Copper) standard IEEE 802.3 Ethernet interface. The KTI225LM supports Intel® vPro™ Technology and Intel® Active Management Technology (Intel® AMT) , providing enterprise IT administrators with powerful out-of-band remote management capabilities. As a key member of Intel's I225 series Ethernet controller family, the KTI225LM is specifically designed to meet the high cost-performance multi-gigabit networking demands of mobile devices, desktops, workstations, value servers, and space-constrained industrial embedded designs.
KTI225LM Key Features
The KTI225LM embodies Intel's deep expertise in enterprise networking through its robust hardware architecture and feature set. It features a PCI Express 3.1 (5 GT/s) host interface, delivering data transfer rates up to 2.5Gbps. The KTI225LM offers a fully integrated single-port Gigabit MAC and PHY supporting 2500BASE-T, 1000BASE-T, 100BASE-TX, and 10BASE-TE. The KTI225LM supports IEEE 802.3az Energy Efficient Ethernet (EEE) for reduced power consumption during low network activity. The KTI225LM supports Time Sensitive Networking (TSN) features including IEEE 802.1Qbu, 802.3br, 802.1Qbv, 802.1AS-REV, 802.1p/Q, and 802.1Qav. The KTI225LM supports 9KB Jumbo Frames, Receive Side Scaling (RSS) , IPv4/IPv6 checksum offload, TCP/UDP checksum offload, and TCP segmentation offload (TSO v2, up to 256KB) . The KTI225LM supports up to 32 individually configurable flexible filters. The KTI225LM operates from 3.3V with a temperature range of 0℃ to 70℃, with a maximum power dissipation of approximately 1.3W.
KTI225LM Applications
With its exceptional 2.5G high-speed transmission, compact package, and enterprise-grade features, the KTI225LM is widely deployed in demanding networking environments. As a core controller, the KTI225LM is an ideal component for mobile devices, desktops, workstations, and value servers requiring integrated multi-gigabit Ethernet solutions. The KTI225LM is also suitable for space-constrained industrial embedded designs such as industrial automation equipment, medical expert systems, kiosks, and digital signage. With its support for Intel® vPro™ Technology and Intel® AMT, the KTI225LM is particularly well-suited for enterprise IT environments requiring out-of-band remote management. The KTI225LM supports Time Sensitive Networking (TSN) features, making it an excellent choice for industrial automation scenarios requiring precise time synchronization and deterministic communication.
KTI225LM Key Advantages
The KTI225LM stands out as a mature, commercially available enterprise-grade single-port multi-gigabit Ethernet controller that strikes an excellent balance between high-speed performance, low power consumption, and enterprise-grade functionality. Housed in a 56-pin QFN (7×7mm) compact package with an integrated Gigabit MAC and PHY, the KTI225LM supports data rates up to 2.5Gbps while remaining backward compatible with Gigabit and Fast Ethernet. The KTI225LM supports Intel® vPro™ Technology and Intel® Active Management Technology (Intel® AMT) , providing IT administrators with powerful out-of-band remote management capabilities. The KTI225LM supports Time Sensitive Networking (TSN) features, meeting industrial real-time communication requirements. The KTI225LM supports IEEE 802.3az Energy Efficient Ethernet (EEE) for further power reduction during low traffic. The KTI225LM supports an operating temperature range of 0℃ to 70℃. The KTI225LM offers system integrators and OEMs a highly competitive multi-gigabit Ethernet connectivity solution.
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FAQs:
1 What is the KTI225LM chip
It is a high performance 2.5G Ethernet network controller chip from Intel belonging to the I225 series. It integrates the MAC and PHY layers and supports the new 2.5GbE high speed network standard.
2 What network speeds does this chip support
It supports auto negotiation of 2.5Gbps, 1000Mbps, 100Mbps, and 10Mbps Ethernet speeds and is fully backward compatible with legacy Gigabit and Fast Ethernet environments.
3 What package and pin count does it use
It adopts a QFN no lead surface mount package with an exposed thermal pad on the bottom, supporting high density SMT and effectively saving PCB space.
4 What host bus interface does it support
It supports the PCI Express 2.1/3.0 high speed bus interface, typically configured in single lane mode, for high throughput data exchange with the host controller.
5 What are the operating voltage and temperature ranges
It uses a multi voltage independent power design including rails such as 1.0V, 1.8V, and 3.3V. The standard operating temperature range is typically from 0 degrees Celsius to plus 70 degrees Celsius depending on the application environment.
6 What application scenarios is this chip suitable for
With its 2.5G high speed and high integration, it is widely used in high performance desktop motherboards, enterprise server network cards, 2.5G NAS storage devices, and industrial control computing platforms.
7 What advanced network acceleration features does it support
It supports IEEE 802.3az Energy Efficient Ethernet standard, VLAN tagging, hardware packet checksum offloading, and integrates advanced network management capabilities.
8 What are the improvements over traditional Gigabit controllers
The biggest upgrade is the support for 2.5G network speeds, which provides a theoretical 2.5 times bandwidth improvement over traditional Gigabit networks, fully unleashing the potential of high speed SSDs and LANs.
9 What are the PCB design considerations for the QFN package
The exposed thermal pad on the bottom must be reliably grounded to a large copper area. Additionally, due to the higher operating frequency, the 2.5G Ethernet differential trace routing must strictly follow 100 ohm impedance matching requirements with controlled trace lengths and spacing.
10 Does this chip require an external PHY chip to operate
No it does not. It integrates a complete 2.5G Ethernet PHY transceiver internally and only requires external magnetic isolation transformers and an RJ45 connector to build a complete wired network port.