KSZ9021RL/RN Gigabit Ethernet Transceiver with RGMII Support Revision 1.2 General Description Features The KSZ9021RL is a completely integrated triple speed Single-chip 10/100/1000Mbps IEEE 802.3 compliant (10Base-T/100Base-TX/1000Base-T) Ethernet Physical Ethernet Transceiver Layer Transceiver for transmission and reception of data RGMII interface compliant to RGMII Version 1.3 over standard CAT-5 unshielded twisted pair (UTP) cable. RGMII I/Os with 3.3V/2.5V tolerant and programmable The KSZ9021RL provides the Reduced Gigabit Media timings to adjust and correct delays on both Tx and Rx Independent Interface (RGMII) for direct connection to paths RGMII MACs in Gigabit Ethernet Processors and Switches Auto-negotiation to automatically select the highest link for data transfer at 10/100/1000Mbps speed. up speed (10/100/100Mbps) and duplex (half/full) The KSZ9021RL reduces board cost and simplifies board On-chip termination resistors for the differential pairs layout by using on-chip termination resistors for the four On-chip LDO controller to support single 3.3V supply differential pairs and by integrating a LDO controller to operation requires only external FET to generate 1.2V drive a low cost MOSFET to supply the 1.2V core. for the core The KSZ9021RL provides diagnostic features to facilitate Jumbo frame support up to 16KB system bring-up and debugging in production testing and 125MHz Reference Clock Output in product deployment. Parametric NAND tree support enables fault detection between KSZ9021 I/Os and board. Programmable LED outputs for link, activity and speed Micrel LinkMD TDR-based cable diagnostics permit Baseline Wander Correction identification of faulty copper cabling. Remote and local TDR-based cable diagnostics for identification LinkMD loopback functions provide verification of analog and of faulty copper cabling digital data paths. Parametric NAND Tree support for fault detection The KSZ9021RL is available in a 64-pin, lead-free E-LQFP between chip I/Os and board. package, and is offered as the KSZ9021RN in the smaller Loopback modes for diagnostics 48-pin QFN package (See Ordering Information). Functional Diagram RGMII Media Types: 10/100/1000 Mbps 10Base-T RJ-45 RGMII KSZ9021RL/RN 100Base-TX Connector MDC / MDIO 1000Base-T Ethernet MAC Management LDO Controller VIN VOUT 3.3VA 1.2V (for core voltages) LinkMD is a registered trademark of Micrel, Inc. Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. KSZ9021RL/RN More Features Applications Automatic MDI/MDI-X crossover for detection and Laser/Network printer correction of pair swap at all speeds of operation Network attached storage (NAS) Automatic detection and correction of pair swap, pair Network server skew and pair polarity Gigabit LAN on motherboard (GLOM) MDC/MDIO Management Interface for PHY register Broadband gateway configuration Gigabit SOHO/SMB router Interrupt pin option IPTV Power down and power saving modes IP Set-top box Operating Voltages Game console Core: 1.2V (external FET or regulator) Triple-play (data, voice, video) media center I/O: 3.3V or 2.5V Media converter Transceiver: 3.3V Available packages 64-pin E-LQFP (10mm x 10mm): KSZ9021RL 48-pin QFN (7mm x 7mm): KSZ9021RN Ordering Information Part Number Temp. Range Package Lead Finish Description KSZ9021RL 0C to +70C 64-Pin E-LQFP Pb-Free RGMII, Commercial Temperature, 64-E-LQFP (1) KSZ9021RLI 40C to +85C 64-Pin E-LQFP Pb-Free RGMII, Industrial Temperature, 64-E-LQFP KSZ9021RN 0C to +70C 48-Pin QFN Pb-Free RGMII, Commercial Temperature, 48-QFN (1) KSZ9021RNI 40C to +85C 48-Pin QFN Pb-Free RGMII, Industrial Temperature, 48-QFN Note: 1. Contact factory for availability. Revision 1.2 February 13, 2014 2