Intel KTI225V Ethernet Controller I225-V Single Port 2.5G PCIe 3.1 QFN-56

KTI225V Product Overview

The Intel Ethernet Controller KTI225V is a high-performance, low-power single-port multi-gigabit Ethernet controller from Intel, part of the I225-V series. Housed in a 56-pin QFN (7×7mm) compact package, the KTI225V supports data rates up to 2.5Gbps while remaining backward compatible with 1000BASE-T, 100BASE-TX, and 10BASE-TE. The KTI225V connects to the host system via a PCI Express 3.1 (5 GT/s) x1 interface, integrating a complete Gigabit MAC and PHY with MDI (Copper) standard IEEE 802.3 Ethernet interface. As a key member of Intel's I225 series Ethernet controller family, the KTI225V 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.

KTI225V Key Features

The KTI225V embodies Intel's deep expertise in high-performance networking through its robust hardware architecture and feature set. The KTI225V features a PCI Express 3.1 (5 GT/s) x1 host interface, delivering data transfer rates up to 2.5Gbps. The KTI225V offers a fully integrated single-port Gigabit MAC and PHY supporting 2500BASE-T, 1000BASE-T, 100BASE-TX, and 10BASE-TE. The KTI225V supports Time Sensitive Networking (TSN) features including IEEE 802.1Qbu, 802.3br, 802.1Qbv, 802.1AS-REV, 802.1p/Q, and 802.1Qav. The KTI225V supports 9.5KB Jumbo Frames, IPv4/IPv6 checksum offload, TCP/UDP checksum offload, and TCP segmentation offload (TSO v2, up to 256KB) . The KTI225V supports up to 32 individually configurable flexible filters. The KTI225V operates from 3.3Vwith a temperature range of 0℃ to 70℃, with a maximum power dissipation of approximately 1.3W.

KTI225V Applications

With its exceptional 2.5G high-speed transmission, compact package, and rich feature set, the KTI225V is widely deployed in demanding networking environments. As a core controller, the KTI225V is an ideal component for mobile devices, desktops, workstations, and value servers. The KTI225V is also suitable for space-constrained industrial embedded designs such as industrial automation equipment, medical expert systems, kiosks, and digital signage. With its Time Sensitive Networking (TSN) support, the KTI225V is an excellent choice for industrial automation scenarios requiring precise time synchronization and deterministic communication. The KTI225V can be used in rack-mounted or pedestal servers, add-on NICs, and LAN on Motherboard (LOM) designs.

KTI225V Key Advantages

The KTI225V stands out as a mature, commercially available mainstream single-port multi-gigabit Ethernet controller that strikes an excellent balance between high-speed performance, low power consumption, and cost-effectiveness. Housed in a 56-pin QFN (7×7mm) compact packagewith an integrated Gigabit MAC and PHY, the KTI225V supports data rates up to 2.5Gbps while remaining backward compatible with Gigabit and Fast Ethernet. The KTI225V supports Time Sensitive Networking (TSN) features, meeting industrial real-time communication requirements. The KTI225V supports an operating temperature range of 0℃ to 70℃with maximum power dissipation of only 1.3W. Intel provides comprehensive driver support for the KTI225V across Windows, Linux, and other mainstream operating systems.

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FAQs:

1 What is the KTI225V S LNMH chip
The KTI225V is a 2.5G ultra high speed Ethernet network controller chip from Intel belonging to the I225 series. The KTI225V integrates both the MAC and a complete PHY layer, providing a new generation cost effective 2.5GbE wired networking solution.

2 What network speeds does this chip support
The KTI225V supports auto negotiation of 2.5Gbps, 1000Mbps, 100Mbps, and 10Mbps speeds. The KTI225V is fully backward compatible with traditional Gigabit and Fast Ethernet environments for plug and play use.

3 What package does it use
The KTI225V adopts a QFN no lead surface mount package with an exposed thermal pad on the bottom. The KTI225V supports high density SMT and occupies minimal PCB space, making it ideal for compact device designs.

4 What host bus interface does it support
The KTI225V supports the PCI Express 2.1 or 3.0 high speed bus interface, typically configured in single lane (x1) mode, enabling high throughput data exchange with the host CPU or chipset.

5 What are the operating voltage and temperature ranges
The KTI225V uses a multi voltage independent power design including rails such as 1.0V, 1.8V, and 3.3V. The KTI225V "V" series typically targets the consumer and commercial market with a standard operating temperature range from 0 degrees Celsius to plus 70 degrees Celsius.

6 What application scenarios is this chip suitable for
With its mainstream 2.5G high speed and high integration, the KTI225V is widely used in high performance desktop motherboards, commercial office PCs, 2.5G NAS storage devices, switches, and embedded control platforms requiring high speed LAN connections.

7 What advanced network features does it support
The KTI225V supports the IEEE 802.3az Energy Efficient Ethernet standard, VLAN tagging, hardware packet checksum offloading, and other acceleration features that effectively reduce CPU utilization and improve network efficiency.

8 What are the main differences compared to the KTI225LM SLN9A chip
Both offer the same core 2.5G network speed performance. The main difference is that the KTI225LM typically supports Intel vPro/AMT enterprise level remote management technology, while the KTI225V is a consumer/commercial standard version without advanced remote management but offers better cost-effectiveness.

9 What are the PCB design considerations for the QFN package
The exposed thermal pad on the bottom of the KTI225V must be reliably grounded to a large copper area for efficient heat dissipation. Due to the high operating frequency, the 2.5G Ethernet differential traces of the KTI225V must strictly follow 100 ohm impedance matching with controlled length and spacing.

10 Does this chip require an external PHY chip to operate
No, the KTI225V does not require an external PHY chip. The KTI225V integrates a complete 2.5G Ethernet PHY transceiver internally, so only standard magnetic isolation transformers and an RJ45 connector are required to build a complete wired network port.