Microchip logo
  • All
  • Products
  • Documents
  • Applications Notes
product primary image

KSZ9131

Gigabit Ethernet Transceiver with Power Saving Features

Status: In Production

Features:

  • Single-chip 10/100/1000Mbps IEEE 802.3 compliant Ethernet transceiver
  • 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
View More
Overview
Documents
Development Environment
RoHS Information
Add To Cart

Device Overview

Summary

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.

Additional Features
  • Single-chip 10/100/1000Mbps IEEE 802.3 compliant Ethernet transceiver
  • 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
  • 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
  • MDC/MDIO management interface for PHY register configuration
  • Automatic detection and correction of pair swaps, pair skew, and pair polarity
  • 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 (commercial temp)
  • 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
Parametrics
Name
Value
Description
Gigabit Ethernet Transceiver with GMII/MII Support with Low Power Features
Ethernet Bandwidth
10/100/1000Mbps
LEDs
2
# of Ethernet Ports
1
Interface
MII/RGMII/GMII
EEE
Yes
Temp. Range Min. (°C)
-40
Temp. Range Max. (°C)
105
HP-Auto MDIX
Yes
Wake-on-LAN
Yes
Automotive
Yes
Copper Support
Yes
Supply Voltage (V)
3.3
Internal Regular
Yes
MAC I/O Voltage
1.8/2.5/3.3
Cable Diagnostics
Yes
802.3az
Yes
On-Chip Termination
Yes
Supports EtherCAT
Yes

Documents

Jump to:

Software Library

Development Environment

  • Software Libraries
Software Libraries
Driver is located in Linux Kernel

The driver for this device resides in the Linux Kernel found here https://www.kernel.org/

Learn More

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
KSZ9131MNXC
0.177500
1.026923
64
VQFN
8x8x0.9mm
Matte Tin
e3
KSZ9131MNXI
0.177500
1.026923
64
VQFN
8x8x0.9mm
Matte Tin
e3
KSZ9131RNXC
0.129500
0.961539
48
VQFN
7x7x0.9mm
Matte Tin
e3
KSZ9131RNXI
0.129500
0.961539
48
VQFN
7x7x0.9mm
Matte Tin
e3
KSZ9131MNXC-TR
0.177500
0.788000
64
VQFN
8x8x0.9mm
Matte Tin
e3
KSZ9131MNXI-TR
0.177500
0.788000
64
VQFN
8x8x0.9mm
Matte Tin
e3
KSZ9131RNXC-TR
0.129500
0.728000
48
VQFN
7x7x0.9mm
Matte Tin
e3
KSZ9131RNXI-TR
0.129500
0.728000
48
VQFN
7x7x0.9mm
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

Buy from Microchip

Grid
View
Table
View
Filter:
Apply
Clear
Only show products with samples
Product
Leads
Package Type
Temp Range
Packing Media
5K Pricing
Buy