Overview
The KSZ8081MNXIA is a 10/100 BASE-TX physical layer transceiver designed by Microchip Technology. This single-chip Ethernet transceiver is IEEE 802.3 compliant and is tailored for use in embedded systems and IoT devices. It features a unique mixed-signal design that extends signaling distance while reducing power consumption. The device is housed in a compact 32-pin QFN package, making it ideal for applications with tight PCB board space constraints.
The KSZ8081MNXIA supports MII and RMII v1.2 interfaces, auto-negotiation for link speed and duplex, and HP Auto MDI/MDI-X for reliable detection and correction of crossover and straight-through cables. It also includes features such as programmable interrupt output, LED outputs for link and activity status, and on-chip termination resistors for the differential pairs.
Key Specifications
| Specification | Value |
|---|---|
| Part Number | KSZ8081MNXIA |
| Package Type | QFN-32 |
| Pin Count | 32 |
| Operating Temperature Range | -40°C to 85°C |
| Supply Voltage | 3.3V (with VDD I/O options for 1.8V, 2.5V, or 3.3V) |
| Data Rate | 100 Mbps |
| Interface Support | MII, RMII v1.2 |
| Compliance | IEEE 802.3, RoHS, REACH |
| Moisture Sensitivity Level | 2 |
| Peak Reflow Temperature | 260°C |
Key Features
- Single-chip 10Base-T/100Base-TX IEEE 802.3 compliant Ethernet transceiver
- MII interface support and RMII v1.2 interface support with a 50MHz reference clock output to MAC
- RMII back-to-back mode support for a 100Mbps copper repeater
- MDC/MDIO management interface for PHY register configuration
- Programmable interrupt output
- LED outputs for link and activity status indication
- On-chip termination resistors for the differential pairs
- Baseline wander correction
- HP Auto MDI/MDI-X for reliable detection and correction of straight-through and crossover cable connections
- Auto-negotiation for link speed and duplex
- Power-down and power-saving modes
- LinkMD TDR-based cable diagnostics to identify faulty copper cabling
- Parametric NAND Tree support for fault detection between chip I/Os and the board
- Loopback modes for diagnostics
Applications
The KSZ8081MNXIA is versatile and suitable for various networking applications across different industries:
- Industrial Automation: Reliable communication between machines and control systems in industrial environments.
- Telecommunications: Facilitating Ethernet-based communications in equipment such as routers and switches.
- Consumer Electronics: Used in smart home devices, gaming consoles, and other consumer electronics requiring fast and reliable network connections.
- Computing and Data Storage: Providing Ethernet connectivity for servers, network-attached storage (NAS) devices, and other computing infrastructure.
- Robotics and Drones: Critical for remote control and data capture in varied environmental conditions.
Q & A
- What is the KSZ8081MNXIA?
The KSZ8081MNXIA is a 10/100 BASE-TX physical layer transceiver designed by Microchip Technology, compliant with IEEE 802.3 standards.
- What interfaces does the KSZ8081MNXIA support?
The KSZ8081MNXIA supports MII and RMII v1.2 interfaces.
- What is the operating temperature range of the KSZ8081MNXIA?
The operating temperature range is -40°C to 85°C.
- What is the supply voltage for the KSZ8081MNXIA?
The nominal supply voltage is 3.3V, with options for 1.8V, 2.5V, or 3.3V VDD I/O.
- Does the KSZ8081MNXIA support auto-negotiation?
Yes, it supports auto-negotiation for link speed and duplex.
- What is HP Auto MDI/MDI-X in the KSZ8081MNXIA?
HP Auto MDI/MDI-X is a feature that reliably detects and corrects straight-through and crossover cable connections.
- Is the KSZ8081MNXIA RoHS compliant?
Yes, the KSZ8081MNXIA is RoHS and REACH compliant.
- What are the power-saving features of the KSZ8081MNXIA?
The device includes power-down and power-saving modes.
- How does the KSZ8081MNXIA diagnose faulty cables?
It uses LinkMD TDR-based cable diagnostics to identify faulty copper cabling.
- What are the typical applications of the KSZ8081MNXIA?
It is used in industrial automation, telecommunications, consumer electronics, computing and data storage, and robotics and drones.
