General Description

The KSZ9021GN is a completely integrated triple speed (10Base-T/100Base-TX/1000Base-T) Ethernet Physical Layer Transceiver for transmission and reception of data on standard CAT-5 unshielded twisted pair (UTP) cable.

Features

• Single-chip 10/100/1000Mbps IEEE 802.3 compliant Ethernet Transceiver

• GMII/MII standard compliant interface

• Auto-negotiation to automatically select the highest link up speed (10/100/100Mbps) and duplex (half/full)

• On-chip termination resistors for the differential pairs

• On-chip LDO controller to support single 3.3V supply operation – requires only external FET to generate 1.2V for the core

• Jumbo frame support up to 16KB

• 125MHz Reference Clock Output

• Programmable LED outputs for link, activity and speed

• Baseline Wander Correction

• LinkMD® TDR-based cable diagnostics for identification of faulty copper cabling

• Parametric NAND Tree support for fault detection between chip I/Os and board.

• Loopback modes for diagnostics

• Automatic MDI/MDI-X crossover for detection and correction of pair swap at all speeds of operation

• Automatic detection and correction of pair swaps, pair skew and pair polarity

• MDC/MDIO Management Interface for PHY register configuration

• Interrupt pin option

• Power down and power saving modes

• Operating Voltages

Core: 1.2V (external FET or regulator)

I/O: 3.3V or 2.5V

Transceiver: 3.3V

• Available in 64-pin QFN (8mm x 8mm) package

Applications

• Laser/Network Printer

• Network Attached Storage (NAS)

• Network Server

• Gigabit LAN on Motherboard (GLOM)

• Broadband Gateway

• Gigabit SOHO/SMB Router

• IPTV

• IP Set-top Box

• Game Console

• Triple-play (data, voice, video) Media Center

• Media Converter