Part Number: KSZ8001LI

Manufacturer: Microchip Technology


Shipped from: Shenzhen/HK Warehouse

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Technical Specifications of KSZ8001LI

Datasheet  KSZ8001LI datasheet
Category Integrated Circuits (ICs)
Family Interface – Drivers, Receivers, Transceivers
Manufacturer Microchip Technology
Packaging Tray
Part Status Active
Type Transceiver
Protocol MII, RMII, SMII
Number of Drivers/Receivers
Duplex Full
Receiver Hysteresis
Data Rate
Voltage – Supply 1.8V, 3.3V
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount
Package / Case 48-LQFP
Supplier Device Package 48-LQFP (7×7)

KSZ8001LI Introduction

The KSZ8001LI is a Physical Layer Transceiver (PHY) with a lot of capabilities. It works with 10BASE-T, 100BASE-TX, and 100BASE-FX Ethernet standards. This low-power device is powered by a single 3.3V supply and operates at its core at 1.8 volts. This makes it an energy-efficient option for many networking applications. In this piece, we’ll talk about the KSZ8001LI’s features, benefits, and uses. We’ll focus on its unique mixed-signal design, compatibility with host interfaces, cable diagnostics, and the fact that Microchip’s LANCheck® online design review service is available.

Overview of the KSZ8001LI

The KSZ8001LI is a Physical Layer Transceiver (PHY) for Ethernet apps that can do a lot. Its main job is to make it easier for a host device to talk to the actual network infrastructure. Here are some of the most important things that make the KSZ8001LI a great choice:

  • Support for the Ethernet Standard: The KSZ8001LI works with many different Ethernet standards, such as 10BASE-T (10 Mbps), 100BASE-TX (100 Mbps), and 100BASE-FX (100 Mbps over fiber optic). Because of this, the device can adapt to different network setups and meet the needs of different applications.
  • Uses little power: The KSZ8001LI is designed to use as little energy as possible, so it only uses about 172mW on average. This low-power design makes sure that the gadget works well, using less power and saving energy across the system as a whole.
  • Single 3.3V Power source: With a single 3.3V power source, the KSZ8001LI works reliably. This makes it easier to build and put together because there is no longer a need for multiple power sources or complicated circuits to control voltage. The need for only one power source makes it easier to put the PHY into the host system.

The KSZ8001LI is a flexible and efficient solution for network applications because it works with various Ethernet standards, uses little power, and has fewer requirements for the power supply. It can be used in a wide range of devices and systems, such as microcontrollers, microprocessors, and FPGA platforms, because of what it can do.

Host Interface Compatibility

The KSZ8001LI is made to work well with different host interfaces, such as MII (Media Independent Interface), RMII (Reduced Media Independent Interface), and SMII (Serial Media Independent Interface). Most famous platforms, like microcontrollers, microprocessors, and FPGA (Field-Programmable Gate Array) devices, have these interfaces.

MII stands for “Media Independent Interface.” The MII interface is a common way for Ethernet MAC (Media Access Control) controllers and PHY (Physical Layer) devices to talk to each other. It is made up of a set of signs that let the MAC and PHY send and receive data. The MII interface makes it easy for the KSZ8001LI to connect to microcontrollers, microprocessors, or FPGAs with built-in IEEE 802.3 MACs.

RMII, which stands for “Reduced Media Independent Interface,” is a simplified version of the MII interface that is meant to lower the number of pins needed to connect the MAC and PHY. It is often used in applications with limited space or computers with few I/O resources. The KSZ8001LI works with RMII, which makes it easy to connect to microcontrollers, microprocessors, or FPGAs with RMII ports.

SMII (Serial Media Independent Interface): The SMII interface is a high-speed serial interface that makes it easy to connect the MAC and PHY in a small space. It is often used in situations where saving room and reducing the number of pins are important. The KSZ8001LI works with microcontrollers, microprocessors, and FPGAs that have SMII connections because it supports SMII.

The KSZ8001LI is very flexible and works with a wide range of embedded systems and network designs because it supports these widely used host interfaces. Whether it’s an Internet of Things (IoT) device with a microcontroller, a networking application with a high-performance microprocessor, or an FPGA-based network accelerator, the KSZ8001LI can be integrated easily and provides reliable and efficient Ethernet connection. Its ability to work with different host interfaces gives designers more freedom in system design and makes integration easier. This lets designers choose the platform that works best for their application.

Mixed-Signal Design

The mixed-signal design of the KSZ8001LI uses analog and digital parts to increase signaling distance, lower power use, improve signal quality, and make the network more stable. This design makes it possible to send data reliably over longer cable runs, uses less power, cuts down on transmission mistakes, and makes sure that the network infrastructure is stable. It is the best choice for uses that need Ethernet connections over long distances, low power use, and high network reliability.


With the KSZ8001LI, HP Auto MDI/MDI-X takes care of telling the difference between crossover and straight-through cords. It quickly adjusts to the type of cable, making it easier to set up a network and fix problems. This function makes the network more reliable by making sure that devices can talk to each other without any problems.

LinkMD Cable Diagnostics

The LinkMD cable diagnostics tool of the KSZ8001LI finds common problems with cables, such as open and short circuits. It makes network upkeep and troubleshooting easier, cuts down on downtime, and makes the network more reliable overall. This feature makes network control easier and smarter, improving efficiency and making sure that the network infrastructure is stable.

Microchip’s LANCheck® Online Design Review Service

Microchip’s LANCheck® online design review service, which is free and private, is a great way to help customers who have chosen Microchip’s products, like the KSZ8001LI, for application design-in.

Help and advice from experts: Customers can connect with Microchip’s team of experts who know a lot about network planning through the LANCheck® service. Customers can use this knowledge to get help, advice, and suggestions that fit the needs of their specific application. The experts can help with design problems, answer technical questions, and give advice on how to best integrate Microchip’s goods into the system as a whole.

Design Optimization: Through the LANCheck® service, Microchip’s experts can look over a customer’s design. This study helps find possible problems, places to make improvements, and best practices. The experts give feedback on the design, making suggestions for improvements and giving advice on how to improve the general system’s performance, reliability, and efficiency. This makes sure that Microchip’s goods, like the KSZ8001LI, are integrated in the best and most effective way.

Increased Confidence in Product Integration: When customers use the LANCheck Service, they can be more sure that Microchip’s products will work well with their application. Expert review and comments give assurance that the design meets industry standards, follows best practices, and is optimized for performance and reliability. This confidence is important for making sure the integration process goes smoothly, lowering risks, and getting products to market faster.

Overall, Microchip’s LANCheck® online design review service has a number of benefits for customers who have chosen goods like the KSZ8001LI. These include getting help from experts, improving the design, and feeling more confident in how the product fits together. By using this service, customers can make sure that their ideas work well and are reliable while minimizing risks and problems.


The KSZ8001LI Physical Layer Transceiver offers versatile and efficient Ethernet connectivity with its low-power operation, mixed-signal design, HP Auto MDI/MDI-X, and LinkMD cable diagnostics. Microchip supports customers with their LANCheck® online design review service, ensuring optimal Integration. For affordable pricing, you can order the KSZ8001LI from ICRFQ, a leading electronic components distributor in China.

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