General Description

The KSZ9021RL is a completely integrated triple speed (10Base-T/100Base-TX/1000Base-T) Ethernet Physical Layer Transceiver for transmission and reception of data over standard CAT-5 unshielded twisted pair (UTP) cable.

Features

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

• RGMII interface compliant to RGMII Version 1.3

• RGMII I/Os with 3.3V/2.5V tolerant and programmable timings to adjust and correct delays on both Tx and Rx paths

• 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 swap, 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 packages

64-pin E-LQFP (10mm x 10mm): KSZ9021RL

48-pin QFN (7mm x 7mm): KSZ9021RN

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