Overview
The KSZ9031RNXIC, produced by Microchip Technology, is a highly integrated triple-speed Ethernet Physical Layer Transceiver. This component supports transmission and reception of data over standard CAT-5 unshielded twisted pair (UTP) cable at speeds of 10Base-T, 100Base-TX, and 1000Base-T. It is designed to reduce board cost and simplify board layout by incorporating on-chip termination resistors for the four differential pairs and an integrated LDO controller to supply the 1.2V core voltage.
Key Specifications
| Specification | Details |
|---|---|
| Speed | 10Base-T, 100Base-TX, 1000Base-T |
| Media Interface | Standard CAT-5 unshielded twisted pair (UTP) cable |
| Termination Resistors | On-chip termination resistors for four differential pairs |
| LDO Controller | Integrated LDO controller to drive a low-cost MOSFET for 1.2V core supply |
| Interface | Reduced Gigabit Media Independent Interface (RGMII) for direct connection to RGMII MACs |
| Cable Diagnostics | LinkMD cable diagnostics |
| Automotive Qualification | Automotive qualified |
Key Features
- Automatic detection and correction for differential pair misplacements and polarity reversals
- Correction for propagation delays and re-sync timing between the four differential pairs as per IEEE 802.3 standard for 1000Base-T operation
- Integrated LDO controller to drive a low-cost MOSFET for 1.2V core supply
- On-chip termination resistors for the four differential pairs to reduce board cost and simplify board layout
- Support for Reduced Gigabit Media Independent Interface (RGMII) for direct connection to RGMII MACs in Gigabit Ethernet processors and switches
- LinkMD cable diagnostics for enhanced cable health monitoring
Applications
- Automotive networking systems
- Industrial Ethernet applications
- IoT devices requiring Ethernet connectivity
- Embedded systems needing high-speed Ethernet interfaces
- Networked control systems in various industries
Q & A
- What are the supported speeds of the KSZ9031RNXIC?
The KSZ9031RNXIC supports 10Base-T, 100Base-TX, and 1000Base-T speeds.
- What type of media interface does the KSZ9031RNXIC use?
The KSZ9031RNXIC uses standard CAT-5 unshielded twisted pair (UTP) cable.
- What is the purpose of the integrated LDO controller in the KSZ9031RNXIC?
The integrated LDO controller drives a low-cost MOSFET to supply the 1.2V core voltage.
- Does the KSZ9031RNXIC support RGMII interface?
Yes, the KSZ9031RNXIC supports the Reduced Gigabit Media Independent Interface (RGMII) for direct connection to RGMII MACs.
- What cable diagnostics feature does the KSZ9031RNXIC include?
The KSZ9031RNXIC includes LinkMD cable diagnostics.
- Is the KSZ9031RNXIC automotive qualified?
Yes, the KSZ9031RNXIC is automotive qualified.
- How does the KSZ9031RNXIC simplify board layout?
The KSZ9031RNXIC simplifies board layout by using on-chip termination resistors for the four differential pairs.
- What are some common applications of the KSZ9031RNXIC?
Common applications include automotive networking systems, industrial Ethernet applications, IoT devices, and embedded systems.
- Does the KSZ9031RNXIC correct for differential pair misplacements and polarity reversals?
Yes, the KSZ9031RNXIC automatically detects and corrects for differential pair misplacements and polarity reversals.
- What is the significance of the IEEE 802.3 standard compliance in the KSZ9031RNXIC?
The KSZ9031RNXIC complies with the IEEE 802.3 standard for 1000Base-T operation, ensuring correct propagation delays and re-sync timing between the four differential pairs.
