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KSZ9021RL/RN Gigabit Ethernet Transceiver with RGMII Support Highlights Applications Single-chip 10/100/1000Mbps IEEE 802.3 compli- Laser/Network printer ant Ethernet Transceiver Network attached storage (NAS) RGMII interface compliant to RGMII Version 1.3 Network server RGMII I/Os with 3.3V/2.5V tolerant and program- Gigabit LAN on motherboard (GLOM) mable timings to adjust and correct delays on Broadband gateway both Tx and Rx paths Gigabit SOHO/SMB router Auto-negotiation to automatically select the high- IPTV est link up speed (10/100/100Mbps) and duplex IP Set-top box (half/full) Game console On-chip termination resistors for the differential pairs Triple-play (data, voice, video) media center Media converter 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 identi- fication 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 regis- ter 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 2009-2019 Microchip Technology Inc. DS00003050A-page 1KSZ9021RL/RN TO OUR VALUED CUSTOMERS It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip products. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined and enhanced as new volumes and updates are introduced. If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via E-mail at docerrors microchip.com. We welcome your feedback. Most Current Data Sheet To obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at:
