Overview
The KSZ8081RNACA is a single-supply 10BASE-T/100BASE-TX Ethernet physical-layer transceiver designed for the transmission and reception of data over standard CAT-5 unshielded twisted pair (UTP) cable. This device is part of Microchip Technology's portfolio and offers a high level of integration, making it suitable for various Ethernet applications. It supports the Reduced Media Independent Interface (RMII) and is compatible with RMII-compliant MACs in Ethernet processors and switches.
Key Specifications
| Specification | Details |
|---|---|
| Interface | 10BASE-T/100BASE-TX Ethernet |
| Cable Type | CAT-5 UTP |
| Supply Voltage | Single 3.3V with 1.8V, 2.5V, or 3.3V VDD I/O options |
| Core Voltage | 1.2V (built-in regulator) |
| Package | 24-pin QFN (4 mm x 4 mm) |
| Operating Temperature | 0°C to 70°C |
| ESD Rating | HBM (6 kV) |
| Interface Support | RMII v1.2, MDC/MDIO management interface |
Key Features
- IEEE 802.3 compliant single-chip 10BASE-T/100BASE-TX Ethernet transceiver
- Support for RMII back-to-back mode on a 100 Mbps copper repeater
- PHY register configuration through MDC/MDIO management interface
- Interrupt output that can be programmed
- Link and activity status indication LED outputs
- Differential pair termination resistors on the chip
- Wander correction at the start
- Disable and enable option for HP auto MDI/MDI-X to detect and correct straight-through and crossover cable connections
- Auto-negotiation to choose the fastest link-up speed (10/100 Mbps) and duplex (half/full) automatically
- Energy-saving and power-down modes
- Faulty copper cabling detection with LinkMD® TDR-based cable diagnostics
- Fault detection between chip I/Os and the board with parametric NAND tree support
- Diagnostics loopback modes
Applications
- Game Consoles
- IP Phones
- IP Set-Top Boxes
- IP TVs
- Line of Modules (LOM)
- Printers
Q & A
- What is the KSZ8081RNACA used for?
The KSZ8081RNACA is used as a 10BASE-T/100BASE-TX Ethernet physical-layer transceiver for data transmission and reception over CAT-5 UTP cable. - What interface does the KSZ8081RNACA support?
The KSZ8081RNACA supports the Reduced Media Independent Interface (RMII) v1.2. - What are the supply voltage options for the KSZ8081RNACA?
The device operates on a single 3.3V supply with 1.8V, 2.5V, or 3.3V VDD I/O options. - What is the package type of the KSZ8081RNACA?
The KSZ8081RNACA is available in a 24-pin QFN package with dimensions of 4 mm x 4 mm. - Does the KSZ8081RNACA support auto-negotiation?
Yes, the KSZ8081RNACA supports auto-negotiation to choose the fastest link-up speed (10/100 Mbps) and duplex (half/full) automatically. - What are some of the diagnostic features of the KSZ8081RNACA?
The device includes faulty copper cabling detection with LinkMD® TDR-based cable diagnostics, fault detection between chip I/Os and the board, and diagnostics loopback modes. - What is the ESD rating of the KSZ8081RNACA?
The ESD rating of the KSZ8081RNACA is HBM (6 kV). - What are some common applications of the KSZ8081RNACA?
Common applications include game consoles, IP phones, IP set-top boxes, IP TVs, line of modules (LOM), and printers. - How does the KSZ8081RNACA manage PHY register configuration?
The KSZ8081RNACA manages PHY register configuration through the MDC/MDIO management interface. - Does the KSZ8081RNACA have energy-saving features?
Yes, the KSZ8081RNACA includes energy-saving and power-down modes.
