KSZ9031RN 4/4 Transceiver Full Ethernet 48-QFN[FAQ]: Datasheet, Features, and Pinout

The KSZ9031RN is a fully integrated triple-speed (10Base-T/100Base-TX/1000Base-T) Ethernet physical-layer transceiver that allows data to be transmitted and received over standard CAT-5 unshielded twisted pair (UTP) cable.

The KSZ9031RN supports the industry-standard GMII/MII (Gigabit Media Independent Interface/Media Independent Interface) for data transfer at 1000Mbps or 10/100Mbps when connected to GMII/MII MACs in Gigabit Ethernet processors and switches. The KSZ9031RNX is a media-independent reduced gigabit interface (RGMII).

The KSZ9031RN uses on-chip termination resistors for the four differential pairs and integrates an LDO controller to drive a low-cost MOSFET to supply the 1.2V core, lowering board cost and simplifying board layout.

• Single-chip 10/100/1000Mbps IEEE 802.3 compliant Ethernet transceiver

• KSZ9031Mxx feature GMII/MII standard interface with 3.3V/2.5V/1.8V tolerant I/Os

• KSZ9031Rxx feature RGMII timing supports on-chip delay according to RGMII Version 2.0, with programming options for the external delay and making adjustments and corrections to TX and RX timing paths

• GMII/MII/RGMII with 3.3V/2.5V/1.8V tolerant I/Os

• Auto-negotiation to automatically select the highest linkup speed (10/100/1000Mbps) and duplex (half/full)

• On-chip termination resistors for the differential pairs

• On-chip LDO controller to support single 3.3V supply operation – requires only one external FET to generate 1.2V for the core

• Jumbo frame support up to 16KB

• 125MHz Reference Clock Output

• Energy-detect power-down mode for reduced power consumption when the cable is not attached

• Wake-on-LAN (WOL) support with robust custom-packet detection

• AEC-Q100 qualified for automotive applications (KSZ9031RNXUB-VAO, KSZ9031RNXVB-VAO)

• Programmable LED outputs for link, activity, and speed

• Baseline wander correction

• LinkMD® TDR-based cable diagnostic to identify faulty copper cabling

• 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

• 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 (commercial temp)

• Available in 48-pin QFN (7mm x 7mm) and 64-pin QFN (8mm x 8mm) packages

KSZ9031RN Pinout

KSZ9031RN Symbol

KSZ9031RN Footprint

KSZ9031RN 3D Model

• Laser/Network Printer

• Network Attached Storage (NAS)

• Network Server

• Gigabit LAN on Motherboard (GLOM)

• Broadband Gateway

• Gigabit SOHO/SMB Router

• IPTV

• IP Set-Top Box

• Game Console

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

• Industrial Control

• Automotive In-Vehicle Networking

Microchip Technology Inc. is a leading provider of microcontroller and analog semiconductors, providing low-risk product development, lower total system cost, and faster time to market for thousands of diverse customer applications worldwide. Headquartered in Chandler, Arizona, Microchip offers outstanding technical support along with dependable delivery and quality.

Download datasheets and manufacturer documentation for Microchip Technology KSZ9031RN.