Description: 

The KSZ9131 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, CAT-5e and CAT6 unshielded twisted pair (UTP) cable.The KSZ9131RNX provides Reduced Gigabit Media Independent Interface RGMII and the KSZ9131MNX offers the industry-standard GMII/MII (Gigabit Media Independent Interface/Media Independent Interface) for connection to GMII/MII MACs in Gigabit Ethernet processors and switches for data transfer at 1000Mbps or 10/100Mbps.

The KSZ9131 reduces board cost and simplifies board layout by using on-chip termination resistors for the four differential pairs and by integrating an LDO controller to drive a low-cost MOSFET to supply the 1.2V core.

The KSZ9131 offers diagnostic features to facilitate system bring-up and debugging in production testing and in product deployment. Parametric NAND tree support enables fault detection between KSZ9131 I/Os and the board. The LinkMD® TDR-based cable diagnostic identifies faulty copper cabling. Remote and local loopback functions verify analog and digital data paths.The standard KSZ9131RNX is available in the 48-pin, RoHS compliant QFN package, and the AEC-Q100 automotive qualified parts, KSZ9131RNXU and KSZ9131RNXV, are available in the 48-pin lead-RoHS compliant VQFN (wettable) package. The KSZ9131MNX is available in a 64-pin, RoHS Compliant QFN package.Microchip's complimentary and confidential LANCheck® online design review service is available for customers who have selected our products for their application design-in. The LANCheck online design review service is subject to Microchip's Program Terms and Conditions and requires a myMicrochip account.

Features:

• Single-Chip 10/100/1000 Mbps Ethernet Transceiver Suitable for IEEE 802.3 Applications

• GMII/MII Standard Interface with 3.3V/2.5V/1.8VTolerant I/Os

• Auto-Negotiation to Automatically Select theHighest Link-Up Speed (10/100/1000 Mbps) andDuplex (Half/Full)

• On-Chip Termination Resistors for the DifferentialPairs

• On-Chip LDO Controller to Support Single 3.3VSupply Operation

• Jumbo Frame Support Up to 16 KB

• 125 MHz Reference Clock Output

• Energy-Detect Power-Down Mode for ReducedPower Consumption When Cable is Not Attached

• Energy Efficient Ethernet (EEE) Support withLow-Power Idle (LPI) Mode and Clock Stoppablefor 100BASE-TX/1000BASE-T and TransmitAmplitude Reduction with 10BASE-Te Option

• Wake-On-LAN (WOL) Support with RobustCustom-Packet Detection

• Programmable LED Outputs for Link, Activity, andSpeed

• Baseline Wander Correction

• Quiet-WIRE® EMI Reduction (100BASE-TX)

• LinkMD® TDR-based Cable Diagnostic to IdentifyFaulty Copper Cabling

• Signal Quality Indication

• Parametric NAND Tree Support to Detect FaultsBetween Chip I/Os and Board

• Loopback Modes for Diagnostics

• Automatic MDI/MDI-X Crossover to Detect andCorrect Pair Swap at All Speeds of Operation

• Automatic Detection and Correction of PairSwaps, 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 (DVDDL, AVDDL, AVDDL_PLL): 1.2V(External FET or Regulator)

- VDD I/O (DVDDH): 3.3V, 2.5V, or 1.8V

- Transceiver (AVDDH): 3.3V or 2.5V

• 64-pin QFN (8 mm × 8 mm) Package

Target Applications:

• Laser/Network Printer

• Network Attached Storage (NAS)

• Network Server

• Broadband Gateway

• Gigabit SOHO/SMB Router

• IPTV

• IP Set-Top Box

• Game Console

• IP Camera

• Triple-Play (Data, Voice, Video) Media Center

• Media Converter