KSZ9131MNXC

The KSZ9131MNX is a completely integrated triple-speed (10BASE-T/100BASE-TX/1000BASE-T) Ethernet physicallayer transceiver for transmission and reception of data on standard CAT-5 as well as CAT-5e and CAT-6 unshielded twisted pair (UTP) cables. 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 1000 Mbps or 10/100 Mbps. The KSZ9131MNX 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 KSZ9131MNX offers diagnostic features to facilitate system bring-up and debugging in production testing and in product deployment.

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

Key features

• Single-Chip 10/100/1000 Mbps Ethernet Transceiver Suitable for IEEE 802.3 Applications
• GMII/MII Standard Interface with 3.3V/2.5V/1.8V Tolerant I/Os
• Auto-Negotiation to Automatically Select the Highest Link-Up Speed (10/100/1000 Mbps) and Duplex (Half/Full)
• On-Chip Termination Resistors for the Differential Pairs
• On-Chip LDO Controller to Support Single 3.3V Supply Operation
• Jumbo Frame Support Up to 16 KB
• 125 MHz Reference Clock Output
• Energy-Detect Power-Down Mode for Reduced Power Consumption When Cable is Not Attached
• Energy Efficient Ethernet (EEE) Support with Low-Power Idle (LPI) Mode and Clock Stoppable for 100BASE-TX/1000BASE-T and Transmit Amplitude Reduction with 10BASE-Te Option
• Wake-On-LAN (WOL) Support with Robust Custom-Packet Detection
• Programmable LED Outputs for Link, Activity, and Speed
• Baseline Wander Correction
• Quiet-WIRE EMI Reduction (100BASE-TX)
• LinkMD TDR-based Cable Diagnostic to Identify Faulty Copper Cabling
• Signal Quality Indication
• Parametric NAND Tree Support to Detect Faults Between Chip I/Os and Board
• Loopback Modes for Diagnostics
• Automatic MDI/MDI-X Crossover to Detect and Correct Pair Swap at All Speeds of Operation
• Automatic Detection and Correction of Pair Swaps, 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