Overview
The KSZ9031RNX is a completely integrated triple-speed (10Base-T/100Base-TX/1000Base-T) Ethernet Physical Layer Transceiver designed by Microchip Technology. This device is optimized for transmission and reception of data over standard CAT-5 unshielded twisted pair (UTP) cable. It is particularly useful for reducing board cost and simplifying board layout by incorporating on-chip termination resistors for the four differential pairs and an LDO controller to supply the 1.2V core using a low-cost MOSFET. The KSZ9031RNX also supports the Reduced Gigabit Media Independent Interface (RGMII) for direct connection to RGMII MACs in Gigabit Ethernet processors and switches, enabling data transfer at speeds of 10/100/1000 Mbps.
Key Specifications
| Specification | Details |
|---|---|
| Speed | 10Base-T, 100Base-TX, 1000Base-T |
| Interface | Reduced Gigabit Media Independent Interface (RGMII) |
| Cable Type | Standard CAT-5 unshielded twisted pair (UTP) |
| Package Type | 48-pin, lead-free QFN package |
| Core Voltage | 1.2V (supplied by an integrated LDO controller and a low-cost MOSFET) |
| Diagnostic Features | Parametric NAND tree support, LinkMD® TDR-based cable diagnostics, remote and local loopback functions |
| Automotive Qualification | AEC-Q100 qualified parts available (KSZ9031RNXUB-VAO and KSZ9031RNXVB-VAO) |
Key Features
- Integrated triple-speed Ethernet Physical Layer Transceiver for 10/100/1000 Mbps data transfer.
- Supports Reduced Gigabit Media Independent Interface (RGMII) for connection to RGMII MACs.
- On-chip termination resistors for the four differential pairs to reduce board cost and simplify layout.
- Integrated LDO controller to drive a low-cost MOSFET for 1.2V core supply.
- Diagnostic features including parametric NAND tree support, LinkMD® TDR-based cable diagnostics, and remote/local loopback functions.
- Automatically detects and corrects for differential pair misplacements, polarity reversals, and propagation delays as per IEEE 802.3 standards.
Applications
- Gigabit Ethernet processors and switches.
- Automotive networking systems (AEC-Q100 qualified parts available).
- Industrial Ethernet applications requiring robust and reliable data transmission.
- Consumer electronics and networking devices.
- Any system requiring high-speed Ethernet connectivity over standard CAT-5 UTP cable.
Q & A
- What are the supported speeds of the KSZ9031RNX? The KSZ9031RNX supports speeds of 10Base-T, 100Base-TX, and 1000Base-T.
- What interface does the KSZ9031RNX provide? The KSZ9031RNX provides the Reduced Gigabit Media Independent Interface (RGMII).
- What type of cable does the KSZ9031RNX support? The KSZ9031RNX supports standard CAT-5 unshielded twisted pair (UTP) cable.
- What is the package type of the KSZ9031RNX? The KSZ9031RNX is available in a 48-pin, lead-free QFN package.
- What diagnostic features does the KSZ9031RNX offer? The KSZ9031RNX offers parametric NAND tree support, LinkMD® TDR-based cable diagnostics, and remote/local loopback functions.
- Is the KSZ9031RNX automotive qualified? Yes, AEC-Q100 qualified parts (KSZ9031RNXUB-VAO and KSZ9031RNXVB-VAO) are available.
- How does the KSZ9031RNX simplify board layout? The KSZ9031RNX simplifies board layout by using on-chip termination resistors for the four differential pairs and integrating an LDO controller to supply the 1.2V core.
- What are the benefits of using the KSZ9031RNX in Ethernet applications? The benefits include reduced board cost, simplified board layout, and robust diagnostic features for reliable data transmission.
- Can the KSZ9031RNX correct for cable issues? Yes, the KSZ9031RNX can automatically detect and correct for differential pair misplacements, polarity reversals, and propagation delays as per IEEE 802.3 standards.
- Is there an evaluation board available for the KSZ9031RNX? Yes, the KSZ9031RNX Evaluation Board (KSZ9031RNX-EVAL) is available for evaluating the features of the KSZ9031RNX.
