KSZ8081MNX Datasheet, PDF (1/66 Pages) Micrel Semiconductor – 10Base-T/100Base-TX Physical Layer Transceiver

KSZ8081MNX/RNB
10BASE-T/100BASE-TX Physical Layer
Transceiver
Features
• Single-chip 10Base-T/100Base-TX IEEE 802.3
compliant Ethernet transceiver
• MII interface support (KSZ8081MNX)
• RMII v1.2 Interface support with a 50 MHz refer-
ence clock output to MAC, and an option to input
a 50 MHz reference clock (KSZ8081RNB)
• Back-to-back mode support for a 100 Mbps
copper repeater
• MDC/MDIO management interface for PHY
register configuration
• Programmable interrupt output
• LED outputs for link, activity, and speed status
indication
• On-chip termination resistors for the differential
pairs
• Baseline wander correction
• HP Auto MDI/MDI-X to reliably detect and correct
straight-through and crossover cable connections
with disable and enable option
• Auto-negotiation to automatically select the
highest link-up speed (10/100 Mbps) and duplex
(half/full)
• 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
• HBM ESD rating (6 kV)
• Loopback modes for diagnostics
• Single 3.3V power supply with VDD I/O options
for 1.8V, 2.5V, or 3.3V
• Built-in 1.2V regulator for core
• Available in 32-pin (5 mm × 5 mm) QFN package
Applications
• Game console
• IP phone
• IP set-top box
• IP TV
• LOM
• Printer
 2016 Microchip Technology Inc.
DS00002202A-page 1