Welcome Here  Shenzhen Mingjiada Electronics Co., Ltd.

The KSZ9031RNXCA is a three-speed (10/100/1000Mbps) Ethernet physical layer transceiver (PHY) that supports the IEEE 802.3 standard for transmitting and receiving data over standard CAT-5 unshielded twisted pair (UTP) cable. Packaged in a 48-QFN (7×7mm) package, the chip integrates RGMII timing control and advanced features such as auto-negotiation, Energy Efficient Ethernet (EEE), and cable diagnostics, making it ideal for use in networking equipment, industrial control, and consumer electronics.

KSZ9031RNXCA Core Functions and Features

Multi-rate support

Compatible with 10Base-T, 100Base-TX, 1000Base-T Ethernet standards, auto-negotiation for optimal transmission rate (10/100/1000Mbps) and duplex mode (half/full duplex).

RGMII 2.0 timing optimisation

Supports on-chip delay tuning and programmable TX/RX timing path correction to ensure high-speed signal integrity.

Low Power Design

Integrated Energy Efficient Ethernet (EEE) with support for Low Power Idle (LPI) mode to reduce power consumption during inactive states.

Cable diagnostics and fault detection

Built-in LinkMD® TDR (Time Domain Reflectometer) identifies cable faults (e.g., shorts, breaks).

Flexible power management

Supports 1.8V/2.5V/3.3V multi-voltage I/O with a built-in LDO controller that generates 1.2V kernel voltage from a single 3.3V power input.

Enhanced Features

Automatic MDI/MDI-X crossover detection (no need to manually configure the wire sequence)

Jumbo frame support (up to 16KB)

Programmable LED output (link status/speed indication)

Loopback mode (for system diagnostics)

Package and Operating Conditions

Package: 48-QFN (7 x 7mm, exposed pads)

Operating Temperature: 0°C ~ 70°C (commercial grade)

RoHS Compliance: RoHS3 compliant.

KSZ9031RNXCA Typical Applications

Network equipment: Gigabit switches, routers, network attached storage (NAS)

Industrial communications: PLCs, industrial Ethernet gateways

Consumer electronics: Smart TVs, game consoles, IP set-top boxes

Embedded systems: motherboards with integrated Gigabit LAN ports (GLOM)

• 1.Is the inventory and price seen on the platform accurate?

  A: all online goods on the shelves can be ordered online, but considering the large liquidity of spot inventory, it is not possible to achieve 100% accuracy at present. In case of any abnormality, you can contact our company online and give the corresponding solution.

• 2.Are all our products genuine?

  A: our self-supporting products are from cooperative domestic and foreign original factories or authorized agents, and the source can be traced to ensure the original and authentic products.

• 3.Can you provide the qualification certificate of the original factory or agent?

  A: at present, our self-employed brands TI，ST，ADI，NXP，LATTICE，CYPRESS，INFINEON，XILINX and other first-line brands. Other channels are the original factory and agency channels. If necessary, we can communicate and confirm according to the specific brand and model.

• 4.Can I make an inquiry through the company's website?

  A: You can inquire through the website, or by phone and email.

• 5.When can I deliver the goods after placing an order? How long will it take to get there?

  A: the delivery date is marked in most commodity information. You can estimate the delivery time of the commodity according to the delivery date. The specific arrival time depends on the warehouse where the commodity is located and the logistics mode you choose.

• 6.Can the company issue an invoice?

  A: you can issue ordinary invoices for individual users or special VAT invoices for enterprise users.