KSZ8051

The KSZ8051 is an AEC-Q100 standard qualified single-supply 10Base-T/100Base-TX Ethernet physical-layer transceiver for automotive applications.

The KSZ8051 is a highly-integrated PHY solution. It reduces board cost and simplifies board layout by using on-chip termination resistors for the differential pairs and by integrating a low-noise regulator to supply the 1.2V core. The KSZ8051MNLU/V offers the Media Independent Interface (MII) and the KSZ8051RNLU/V offers the Reduced Media Independent Interface (RMII) for direct connection with MII/RMII-compliant Ethernet MAC processors and switches. A 25MHz crystal is used to generate all required clocks, including the 50MHz RMII reference clock output for the KSZ8051RNLU/V.

The KSZ8051 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 KSZ8051 I/Os and the board. LinkMD TDR-based cable diagnostics identify faulty copper cabling. The KSZ8051MNLU/V and KSZ8051RNLU/V are available in 32-pin, 5x5 lead-free QFN packages

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  service is subject to Microchip's  and requires a myMicrochip account.

Features
  • Single-chip 10Base-T/100Base-TX IEEE 802.3 compliant Ethernet transceiver
  • AEC-Q100 qualified for automotive applications
  • MII interface support (KSZ8051MNLU/V)
  • RMII v1.2 Interface support with a 50MHz reference clock output to MAC, and an option to input a 50MHz reference clock (KSZ8051RNLU/V)
  • 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, activity, and speed status indication
  • 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)
  • Power-down and power-saving modes
  • 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
  • 32-pin (5mm x 5mm) QFN package
Parameter
Parameter Name Value Value
Description Automotive 10/100 BASE-TX Physical Layer Transceiver Automotive 10/100 BASE-TX Physical Layer Transceiver
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
Temp. Range Min. (°C) -40 -40
Temp. Range Max. (°C) 105 105
HP-Auto MDIX Yes Yes
Cable Diags Yes Yes
Automotive Yes Yes
Fiber Support No No
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
Int Term Yes Yes
Documents
KSZ8051MNLU/RNLU - 10Base-T/100Base-TX PHYData Sheets11/09/20151211KB
KSZ8051MNLV/RNLV - 10Base-T/100Base-TX PHYData Sheets11/09/20151254KB
KSZ8051 to KSZ8081_91 (32-QFN) MigrationMigration Documents10/16/2015238KB
KSZ8051 to KSZ8081_91 (32-QFN) Migration_updateMigration Documents10/16/2015427KB
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 73 - Migrating to KSZ8051 Family PHY TransceiversAppNote10/02/2015178KB
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
KSZ8051MLL_v1.1_DPDesign Guides02/19/2016463KB
KSZ8051MNLU_v1.0_DPDesign Guides02/19/20162253KB
KSZ8051RNLU_v1.0_DPDesign Guides02/19/20161993KB
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
KSZ8051MLL0.1555000.69400048LQFP7x7x1.4mmMatte Tine3
KSZ8051MLL-TR0.1555000.76800048LQFP7x7x1.4mmMatte Tine3
KSZ8051MLLI0.1555000.69400048LQFP7x7x1.4mmMatte Tine3
KSZ8051MLLI-TR0.1555000.76800048LQFP7x7x1.4mmMatte Tine3
KSZ8051RNLI-TR0.0641000.21400032VQFN5x5x0.9mmNiPdAue4
KSZ8051MNLU-TR0.0641000.21400032VQFN5x5x0.9mmNiPdAue4
KSZ8051RNLU-TR0.0641000.21400032VQFN5x5x0.9mmNiPdAue4
KSZ8051MNL-TR0.0641000.21400032VQFN5x5x0.9mmNiPdAue4
KSZ8051RNL-TR0.0641000.21400032VQFN5x5x0.9mmNiPdAue4
KSZ8051MNLI-TR0.0641000.21400032VQFN5x5x0.9mmNiPdAue4
KSZ8051RNL0.0641000.09921932VQFN5x5x0.9mmNiPdAue4
KSZ8051MNLV0.0641000.09921932VQFN5x5x0.9mmNiPdAue4
KSZ8051MNLU/RNLU - 10Base-T/100Base-TX PHY KSZ8051
KSZ8051MNLV/RNLV - 10Base-T/100Base-TX PHY KSZ8051
KSZ8051 to KSZ8081_91 (32-QFN) Migration KSZ8091RNB-EVAL
KSZ8051 to KSZ8081_91 (32-QFN) Migration_update KSZ8091MNX-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 KSZ8997
Micrel AN 44 KSZ8999
Micrel AN 45 KSZ8999
Micrel AN 73 KSZ8051
Micrel AN 8 KSZ8997
Micrel AN 81 KSZ8895
Micrel AN 91 KSZ8999
KSZ8051MLL_v1.1_DP KSZ8051
KSZ8051MNLU_v1.0_DP KSZ8051
KSZ8051RNLU_v1.0_DP KSZ8051