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KSZ8091

10/100 Base-T/TX Ethernet Transceiver with Power Saving Features

Status: In Production

Features:

  • Single-chip 10Base-T/100Base-TX IEEE 802.3 compliant Ethernet transceiver
  • Wake-on-LAN (WOL) support with either magic packet, link status change, or robust custom-packet detection
  • Power-down and power-saving modes
  • MII interface support (KSZ8091MNX, KSZ8091MLX)
  • RMII v1.2 interface support with a 50MHz reference clock output to MAC and an option to input a 50MHz reference clock (KSZ8091RNB)
  • Back-to-back mode support for a 100Mbps copper repeater
  • MDC/MDIO management interface for PHY register configuration
  • Programmable interrupt output
  • LED outputs for link and activity status indication, plus speed indication for KSZ8091RNB
  • On-chip termination resistors for the differential pairs
  • Baseline wander correction
  • HP Auto MDI/MDI-X to reliably detect and correct straight-through and crossover cable connections with disable and enable option
  • Auto-negotiation to automatically select the highest link-up speed (10/100Mbps) and duplex (half/full)
  • LinkMD® TDR-based cable diagnostics to identify faulty copper cabling
  • Parametric NAND Tree support for fault detection between chip I/Os and the 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 24-pin (4mm x 4mm) QFN, 32-pin (5mm x 5mm) QFN and 48-pin (7mm x 7mm) LQFP packages
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The KSZ8091 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 KSZ8091 is a highly-integrated PHY solution. It reduces board cost and simplifies board layout by using on-chip termination resistors for the differential pairs, integrating a low-noise regulator to supply the 1.2V core and by offering a flexible 1.8/2.5/3.3V digital I/O interface.

The KSZ8091MNX and KSZ8091MLX offer the Media Independent Interface (MII), while the the KSZ8091RNx offer the Reduced Media Independent Interface (RMII) for direct connection with MII/RMII-compliant Ethernet MAC processors and switches.

Wake-on-LAN (WOL) provides a mechanism for the KSZ8091 to wake up a system that is in standby power mode. The KSZ8091 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 KSZ8091 I/Os and the board. Microchip's LinkMD® TDR-based cable diagnostics identify faulty copper cabling. 

The KSZ8091RNA and KSZ8091RND are available in a 24-pin (4mm x 4mm) QFN package. The KSZ8091MNX and KSZ8091RNB are available in a 32-pin, lead-free QFN packages.  The KSZ8091MLX is available in a 48-pin (7mm x 7mm) LQFP 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 10Base-T/100Base-TX IEEE 802.3 compliant Ethernet transceiver
      • Wake-on-LAN (WOL) support with either magic packet, link status change, or robust custom-packet detection
      • Power-down and power-saving modes
      • MII interface support (KSZ8091MNX, KSZ8091MLX)
      • RMII v1.2 interface support with a 50MHz reference clock output to MAC and an option to input a 50MHz reference clock (KSZ8091RNB)
      • Back-to-back mode support for a 100Mbps copper repeater
      • MDC/MDIO management interface for PHY register configuration
      • Programmable interrupt output
      • LED outputs for link and activity status indication, plus speed indication for KSZ8091RNB
      • On-chip termination resistors for the differential pairs
      • Baseline wander correction
      • HP Auto MDI/MDI-X to reliably detect and correct straight-through and crossover cable connections with disable and enable option
      • Auto-negotiation to automatically select the highest link-up speed (10/100Mbps) and duplex (half/full)
      • LinkMD® TDR-based cable diagnostics to identify faulty copper cabling
      • Parametric NAND Tree support for fault detection between chip I/Os and the 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 24-pin (4mm x 4mm) QFN, 32-pin (5mm x 5mm) QFN and 48-pin (7mm x 7mm) LQFP packages
Parametrics
Name
Value
Description
10Base-T/100Base-TX Physical Layer Transceiver with Power Saving Features
Ethernet Bandwidth
10/100Mbps
LEDs
2
# of Ethernet Ports
1
Interface
MII/RMII
EEE
Yes
Temp. Range Min. (°C)
-40
Temp. Range Max. (°C)
85
HP-Auto MDIX
yes
Wake-on-LAN
Yes
Interface1
MII, RMII
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:

Supporting Collateral

02/19/2016
1733KB
02/19/2016
6112KB
08/08/2019
3391KB
02/19/2016
3645KB
08/08/2019
3366KB
02/19/2016
3541KB

Board Design Files

08/10/2017
228KB

Software Library

Development Environment

  • Demo & Evaluation Boards
  • Software Libraries
Demo & Evaluation Boards
KSZ8091MNX EVAL BOARD
KSZ8091MNX EVAL BOARD ( KSZ8091MNX-EVAL )

The KSZ8081MNX / KSZ8091MNX is a 10Base-T/100Base-TX Physical Layer Transceiver with an MII MAC interface. It utilizes a unique mixed-signal design to extend signaling distance while reducing power consumption, and offers HP Auto MDI/MDI-X for reliable detection of and correction for crossover and straight-through cables, eliminating the need to differentiate between crossover and straight-through...

Learn More
Add To Cart
KSZ8091RNA EVAL BOARD
KSZ8091RNA EVAL BOARD ( KSZ8091RNA-EVAL )
(Not Recommended for new design)

The KSZ8091RNA / KSZ8091RND is a 10Base-T/100Base-TX Physical Layer Transceiver with an RMII MAC interface. It utilizes a unique mixed-signal design to extend signaling distance while reducing power consumption, and offers HP Auto MDI/MDI-X for reliable detection of and correction for crossover and straight-through cables, eliminating the need to differentiate between crossover and...

Learn More
Add To Cart
KSZ8091RNB EVAL BOARD
KSZ8091RNB EVAL BOARD ( KSZ8091RNB-EVAL )
(Not Recommended for new design)

The KSZ8081RNB / KSZ8091RNB is a 10Base-T/100Base-TX Physical Layer Transceiver with an RMII MAC interface. It utilizes a unique mixed-signal design to extend signaling distance while reducing power consumption, and offers HP Auto MDI/MDI-X for reliable detection of and correction for crossover and straight-through cables, eliminating the need to differentiate between crossover and...

Learn More
Add To Cart
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
KSZ8091MNXCA
0.061400
0.408163
32
VQFN
5x5x0.9mm
Matte Tin
e3
KSZ8091MNXCA-TR
0.061400
0.350000
32
VQFN
5x5x0.9mm
Matte Tin
e3
KSZ8091MNXIA-TR
0.061400
0.350000
32
VQFN
5x5x0.9mm
Matte Tin
e3
KSZ8091RNACA-TR
0.038700
0.204000
24
VQFN
4x4x0.9mm
Matte Tin
e3
KSZ8091RNAIA-TR
0.038700
0.204000
24
VQFN
4x4x0.9mm
Matte Tin
e3
KSZ8091RNBCA
0.061400
0.408163
32
VQFN
5x5x0.9mm
Matte Tin
e3
KSZ8091RNBCA-G3XX
0.064100
0.530612
32
VQFN
5x5x0.9mm
NiPdAu
e4
KSZ8091RNBCA-G3XX-TR
0.064100
0.214000
32
VQFN
5x5x0.9mm
NiPdAu
e4
KSZ8091RNBCA-TR
0.061400
0.350000
32
VQFN
5x5x0.9mm
Matte Tin
e3
KSZ8091RNBIA-TR
0.061400
0.350000
32
VQFN
5x5x0.9mm
Matte Tin
e3
KSZ8091RNDCA-TR
0.038700
0.204000
24
VQFN
4x4x0.9mm
Matte Tin
e3
KSZ8091RNDIA-TR
0.038700
0.204000
24
VQFN
4x4x0.9mm
Matte Tin
e3
KSZ8091RNAIA-G3XX-TR
0.038700
0.204000
24
VQFN
4x4x0.9mm
Matte Tin
e3
KSZ8091MLXCA
0.155500
0.694000
48
LQFP
7x7x1.4mm
Matte Tin
e3
KSZ8091MLXCA-TR
0.155500
0.768000
48
LQFP
7x7x1.4mm
Matte Tin
e3
KSZ8091MLXIA
0.155500
0.694000
48
LQFP
7x7x1.4mm
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.

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