PDF KSZ8051MLL Data sheet ( Hoja de datos )

Número de pieza	KSZ8051MLL
Descripción	10Base-T/100Base-TX Physical Layer Transceiver
Fabricantes	Micrel Semiconductor
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No Preview Available ! KSZ8051MLL 10Base-T/100Base-TX Physical Layer Transceiver Data Sheet Rev. 1.0 General Description The KSZ8051MLL is a single-supply 10Base-T/100Base- TX Ethernet physical layer transceiver for transmission and reception of data over standard CAT-5 unshielded twisted pair (UTP) cable. The KSZ8051MLL is a highly-integrated, compact solution. It reduces board cost and simplifies board layout by using on-chip termination resistors for the differential pairs and by integrating a low-noise regulator to supply the 1.2V core. The KSZ8051MLL offers the Media Independent Interface (MII) for direct connection with MII-compliant Ethernet MAC processors and switches. The KSZ8051MLL provides diagnostic features to facilitate system bring-up and debugging in production testing and in product deployment. Parametric NAND tree support enables fault detection between KSZ8051MLL I/Os and board. Micrel LinkMD® TDR-based cable diagnostics permit identification of faulty copper cabling. Remote and local loopback functions provide verification of analog and digital data paths. The KSZ8051MLL is available in the 48-pin, lead-free LQFP package (See Ordering Information). Data sheets and support documentation can be found on Micrel’s web site at www.micrel.com. Features • Single-chip 10Base-T/100Base-TX IEEE 802.3 compliant Ethernet Transceiver • MII Interface support • Back-to-Back mode support for 100Mbps copper repeater or media converter • 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 for reliable detection and correction for straight-through and crossover cables 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 for identification of faulty copper cabling • Parametric NAND Tree support for fault detection between chip I/Os and board. • 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 48-pin (7mm x 7mm) LQFP package ____________________________________________________________________________________________________________ Functional Diagram 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 • http://www.micrel.com July 2010 M9999-071210-1.0 1 page Micrel, Inc. KSZ8051MLL HP Auto MDI/MDI-X ............................................................................................................................................................. 21 Straight Cable ................................................................................................................................................................... 21 Crossover Cable ............................................................................................................................................................... 22 LinkMD® Cable Diagnostics................................................................................................................................................ 22 NAND Tree Support ............................................................................................................................................................ 23 NAND Tree I/O Testing..................................................................................................................................................... 24 Power Management ............................................................................................................................................................ 25 Power Saving Mode.......................................................................................................................................................... 25 Energy Detect Power-Down Mode ................................................................................................................................... 25 Power-Down Mode ........................................................................................................................................................... 25 Slow Oscillator Mode ........................................................................................................................................................ 25 Reference Circuit for Power and Ground Connections .................................................................................................. 26 Register Map........................................................................................................................................................................ 27 Register Description ........................................................................................................................................................... 27 Register Description (Continued)...................................................................................................................................... 28 Register Description (Continued)...................................................................................................................................... 29 Register Description (Continued)...................................................................................................................................... 30 Register Description (Continued)...................................................................................................................................... 31 Register Description (Continued)...................................................................................................................................... 32 Register Description (Continued)...................................................................................................................................... 33 Register Description (Continued)...................................................................................................................................... 34 Register Description (Continued)...................................................................................................................................... 35 Register Description (Continued)...................................................................................................................................... 36 Absolute Maximum Ratings(1) ............................................................................................................................................ 37 Operating Ratings(2) ............................................................................................................................................................ 37 Electrical Characteristics(3) ................................................................................................................................................ 37 Electrical Characteristics(3) (Continued) ........................................................................................................................... 38 Timing Diagrams ................................................................................................................................................................. 39 MII SQE Timing (10Base-T) ............................................................................................................................................. 39 MII Transmit Timing (10Base-T) ....................................................................................................................................... 40 MII Receive Timing (10Base-T) ........................................................................................................................................ 41 MII Transmit Timing (100Base-TX) .................................................................................................................................. 42 MII Receive Timing (100Base-TX) ................................................................................................................................... 43 Auto-Negotiation Timing ................................................................................................................................................... 44 MDC/MDIO Timing ........................................................................................................................................................... 45 Reset Timing..................................................................................................................................................................... 46 Reset Circuit ........................................................................................................................................................................ 47 Reference Circuits for LED Strapping Pins...................................................................................................................... 48 Magnetics Specification ..................................................................................................................................................... 49 Reference Clock – Connection and Selection.................................................................................................................. 50 Package Information........................................................................................................................................................... 51 July 2010 5 M9999-071210-1.0 5 Page Micrel, Inc. KSZ8051MLL Pin Description – KSZ8051MLL (Continued) Pin Number 42 Pin Name LED0 / NWAYEN Type(1) Ipu/O Pin Function LED Output: Programmable LED0 Output / Config Mode: Latched as Auto-Negotiation Enable (register 0h, bit 12) at the de-assertion of reset. See Strapping Options section for details. The LED0 pin is programmable via register 1Fh bits [5:4], and is defined as follows. LED mode = [00] Link/Activity Pin State No Link High Link Low Activity Toggle LED Definition OFF ON Blinking LED mode = [01] Link Pin State No Link High Link Low LED Definition OFF ON LED mode = [10], [11] Reserved 43 LED1 / Ipu/O LED Output: Programmable LED1 Output / SPEED Config Mode: Latched as SPEED (register 0h, bit 13) at the de-assertion of reset. See Strapping Options section for details. The LED1 pin is programmable via register 1Fh bits [5:4], and is defined as follows. LED mode = [00] Speed Pin State 10Base-T High 100Base-TX Low LED Definition OFF ON 44 NC 45 NC 46 NC LED mode = [01] Activity Pin State No Activity High Activity Toggle LED Definition OFF Blinking LED mode = [10], [11] Reserved - No connect - No connect - No connect July 2010 11 M9999-071210-1.0 11 Page

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