KSZ8091

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, by 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.

Energy Efficient Ethernet (EEE) provides power saving during idle traffic periods and 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  is subject to Microchip's  and requires a myMicrochip account.

Features
  • Single-chip 10Base-T/100Base-TX IEEE 802.3 compliant Ethernet transceiver
  • Energy Efficient Ethernet (EEE) support with low-power idle (LPI) mode and clock stoppage (MII version only) for 100Base-TX and transmit amplitude reduction with 10Base-Te option
  • 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
Parameter
Parameter Name Value Value
Description 10Base-T/100Base-TX Physical Layer Transceiver with Power Saving Features 10Base-T/100Base-TX Physical Layer Transceiver with Power Saving Features
Ethernet Bandwidth 10Base-T/ 100Base-TX 10Base-T/ 100Base-TX
Op. Voltage (V) 3.3 3.3
LEDs 2 2
# of Ethernet Ports 1 1
Interface MII/RMII MII/RMII
EEE Yes Yes
Temp. Range Min. (°C) -40 -40
Temp. Range Max. (°C) 85 85
HP-Auto MDIX yes yes
Wake-on-LAN Yes Yes
Cable Diags Yes Yes
Interface1 MII, RMII MII, RMII
Supply Voltage (V) 3.3 3.3
Vdd I/O (V) 1.8/2.5/3.3 1.8/2.5/3.3
Cable Diagnostics Yes Yes
802.3az Yes Yes
Int Term Yes Yes
Supports EtherCAT Yes Yes
Documents
KSZ8091MLX - 10Base-T/100Base-TX PHYData Sheets11/09/20151526KB
KSZ8091MNX/RNB - 10Base-T/100Base-TX PHYData Sheets11/09/20151475KB
KSZ8091RNA/RND - 10Base-T/100Base-TX PHYData Sheets11/09/20151091KB
AN2157 - Transient Protection in Power Over Ethernet ApplicationsAppNote05/24/2016229KB
Micrel AN 109 - Unmanaged Ethernet Redundant RingAppNote10/02/201567KB
Micrel AN 114 - Virtual LANAppNote10/02/201585KB
Micrel AN 24 - Ethernet over POFAppNote10/01/2015149KB
Micrel AN 25 - EtherSynch - Synchronization PerfectedAppNote10/01/2015267KB
Micrel AN 27 - Fast Ethernet: Delivery of Data in Industrial ApplicationsAppNote10/01/2015108KB
Micrel AN 31 - General PCB Design and Layout GuidelinesAppNote10/01/2015104KB
Micrel AN 32 - Get in Sync!AppNote10/01/20151432KB
Micrel AN 44 - Interfacing Fast Ethernet to ProcessorsAppNote10/01/2015149KB
Micrel AN 45 - Interfacing Fast Ethernet Transceivers to MAC ProcessorsAppNote10/01/2015122KB
Micrel AN 8 - Capacitive Coupling Ethernet Transceivers without Using TransformersAppNote09/30/2015103KB
Micrel AN 81 - PHY Speed and Duplex ConfigurationAppNote10/02/2015132KB
Micrel AN 91 - Reducing Maintenance Costs With Cable Diagnosis and Micrels LinkMDAppNote10/02/2015420KB
Driver is located in Linux KernelSoftware Library02/01/2016
KSZ8081_8091MLX_v1.1_DPDesign Guides02/19/20161733KB
KSZ8081_8091MNX_v1.2_DP.zipDesign Guides02/19/20166112KB
KSZ8081_8091RNB_v1.2_DP.zipDesign Guides02/19/20163645KB
KSZ8091RNA-RND_v1.1_DPDesign Guides02/19/20163541KB
Ordering Information
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
KSZ8091MLXCA48LQFP0C to +70CTRAY**********
KSZ8091MLXCA-TR48LQFP0C to +70CT/R1.301.090.990.910.87
KSZ8091MLXIA48LQFP-40C to +85CTRAY**********
KSZ8091MNXCA32VQFN0C to +70CTRAY**********
KSZ8091MNXCA-TR32VQFN0C to +70CT/R1.301.090.990.910.87
KSZ8091MNXIA-TR32VQFN-40C to +85CT/R1.631.361.241.141.08
KSZ8091RNACA-TR24VQFN0C to +70CT/R1.201.000.910.840.79
KSZ8091RNAIA-G3XX24VQFN-40C to +85CTRAY**********
KSZ8091RNAIA-G3XX-TR24VQFN-40C to +85CT/R**********
KSZ8091RNAIA-TR24VQFN-40C to +85CT/R1.491.241.131.040.99
KSZ8091RNBCA32VQFN0C to +70CTRAY**********
KSZ8091RNBCA-G3XX32VQFN0C to +70CTRAY**********
KSZ8091RNBCA-G3XX-TR32VQFN0C to +70CT/R**********
KSZ8091RNBCA-TR32VQFN0C to +70CT/R1.401.161.060.980.93
KSZ8091RNBIA-TR32VQFN-40C to +85CT/R1.751.461.321.221.16
KSZ8091RNDCA-TR24VQFN0C to +70CT/R**********
KSZ8091RNDIA-TR24VQFN-40C to +85CT/R1.491.241.131.040.99
相关开发工具
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
KSZ8091MLXCA0.1555000.69400048LQFP7x7x1.4mmMatte Tine3
KSZ8091MLXIA0.1555000.69400048LQFP7x7x1.4mmMatte Tine3
KSZ8091MLXCA-TR0.1555000.76800048LQFP7x7x1.4mmMatte Tine3
KSZ8091RNBCA0.0614000.40816332VQFN5x5x0.9mmMatte Tine3
KSZ8091RNBCA-TR0.0614000.35000032VQFN5x5x0.9mmMatte Tine3
KSZ8091MNXCA0.0614000.40816332VQFN5x5x0.9mmMatte Tine3
KSZ8091MNXCA-TR0.0614000.35000032VQFN5x5x0.9mmMatte Tine3
KSZ8091RNBIA-TR0.0614000.35000032VQFN5x5x0.9mmMatte Tine3
KSZ8091MNXIA-TR0.0614000.35000032VQFN5x5x0.9mmMatte Tine3
KSZ8091RNBCA-G3XX0.0641000.09921932VQFN5x5x0.9mmNiPdAue4
KSZ8091RNBCA-G3XX-TR0.0641000.21400032VQFN5x5x0.9mmNiPdAue4
KSZ8091RNAIA-G3XX0.0422000.55510224VQFN4x4x0.9mmNiPdAue4
KSZ8091RNAIA-G3XX-TR0.0422000.20400024VQFN4x4x0.9mmNiPdAue4
KSZ8091RNACA-TR0.0387000.20400024VQFN4x4x0.9mmMatte Tine3
KSZ8091RNAIA-TR0.0387000.20400024VQFN4x4x0.9mmMatte Tine3
KSZ8091RNDCA-TR0.0387000.20400024VQFN4x4x0.9mmMatte Tine3
KSZ8091RNDIA-TR0.0387000.20400024VQFN4x4x0.9mmMatte Tine3
KSZ8091MLX - 10Base-T/100Base-TX PHY KSZ8091
KSZ8091MNX/RNB - 10Base-T/100Base-TX PHY KSZ8091
KSZ8091RNA/RND - 10Base-T/100Base-TX PHY KSZ8091
KSZ8091MLX Brochure KSZ8091RNB-EVAL
KSZ8091MNX-RNB Brochure KSZ8091RNB-EVAL
KSZ8091RNA-RND Brochure KSZ8091RNB-EVAL
AN2157 LAN9353
Micrel AN 109 KSZ8995
Micrel AN 114 KSZ8999
Micrel AN 24 KSZ8999
Micrel AN 25 KSZ8999
Micrel AN 27 KSZ8997
Micrel AN 31 KSZ8999
Micrel AN 32 KSZ8999
Micrel AN 44 KSZ8999
Micrel AN 45 KSZ8993
Micrel AN 8 KSZ8999
Micrel AN 81 KSZ8895
Micrel AN 91 KSZ8999
KSZ8081_8091MLX_v1.1_DP KSZ8091
KSZ8081_8091MNX_v1.2_DP.zip KSZ8091
KSZ8081_8091RNB_v1.2_DP.zip KSZ8091
KSZ8091RNA-RND_v1.1_DP KSZ8091
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