KSZ9021

Please consider this device

The KSZ9021 is a completely integrated triple speed (10Base-T/100Base-TX/1000Base-T) Ethernet Physical Layer Transceiver for transmission and reception of data over standard CAT-5 unshielded twisted pair (UTP) cable.

The KSZ9021Gxx provides the industry standard Gigabit Media Independent Interface/Media Independent Interface (GMII/MII) for connection to GMII/MII MACs in Gigabit Ethernet Processors and Switches for data transfer at 1000Mbps or 10/100Mbps speed. The KSZ9021Rxx provides the Reduced Gigabit Media Independent Interface (RGMII).

The KSZ9021 reduces board cost and simplifies board layout by using on-chip termination resistors for the four differential pairs and by integrating a LDO controller to drive a low cost MOSFET to supply the 1.2V core. The KSZ9021 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 KSZ9021 I/Os and board. Micrel LinkMD® TDR-based cable diagnostics permit identification of faulty copper cabling. Remote and local loopback functions provide verification of analog and digital data paths.

The KSZ9021RL is available in a 64-pin, lead-free E-LQFP package, and is offered as the KSZ9021RN in the smaller 48-pin QFN package. The KSZ9021GN is available in a 64-pin, lead-free QFN package and the KSZ9021GQ is available in a 128-pin, lead-free PQFP 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  and requires a myMicrochip account.

产品特性
  • Single-chip 10/100/1000Mbps IEEE 802.3 compliant Ethernet Transceiver
  • KSZ9021G features GMII/MII standard compliant interface
  • KSZ9021R features RGMII interface compliant to RGMII Version 1.3
  • GMII/MII/RGMII I/Os with 3.3V/2.5V tolerant and programmable timings to adjust and correct delays on both Tx and Rx paths
  • Auto-negotiation to automatically select the highest link up speed (10/100/100Mbps) 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 external FET to generate 1.2V for the core
  • Jumbo frame support up to 16KB
  • 125MHz Reference Clock Output
  • Programmable LED outputs for link, activity and speed
  • Baseline Wander Correction
  • LinkMD® TDR-based cable diagnostics for identification of faulty copper cabling
  • Parametric NAND Tree support for fault detection between chip I/Os and board.
  • Loopback modes for diagnostics
技术参数
Parameter Name Value Value
Description Gigabit Ethernet Transceiver with RGMII/GMII/MII Support Gigabit Ethernet Transceiver with RGMII/GMII/MII Support
Ethernet Bandwidth 10Base-T/ 100Base-TX/1000Base-T 10Base-T/ 100Base-TX/1000Base-T
Op. Voltage (V) 3.3 3.3
LEDs 2 2
# of Ethernet Ports 1 1
Interface MII/RGMII/GMII MII/RGMII/GMII
Temp. Range Min. (°C) -40 -40
Temp. Range Max. (°C) 85 85
HP-Auto MDIX Yes Yes
Cable Diags Yes Yes
Interface1 MII, RGMII, GMII MII, RGMII, GMII
Supply Voltage (V) 3.3 3.3
Vdd I/O (V) 3.3 3.3
Cable Diagnostics Yes Yes
Int Term Yes Yes
文档资料
KSZ9021GN - Gigabit Ethernet Transceiver with GMII/MII SupportData Sheets11/09/2015418KB
KSZ9021GQ - Gigabit Ethernet Transceiver with GMII/MII SupportData Sheets11/09/2015479KB
KSZ9021RL/RN - Gigabit Ethernet Transceiver with RGMII SupportData Sheets11/09/2015888KB
Migration Guide - KSZ9021RN to KSZ9031RNX rev 1.1Migration Documents10/15/201582KB
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 76 - Optimized Power Scheme for High Efficiency, Low-Power Consumption and Dissipation for KSZ9021 Gigabit Ethernet PHYAppNote10/02/2015572KB
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
KSZ9021GN_v1.2_DP.zipDesign Guides02/19/20163900KB
KSZ9021GQ_v1.3_DP.zipDesign Guides02/19/2016618KB
KSZ9021RL_v1.2_DP.zipDesign Guides02/19/20163007KB
KSZ9021RN_v1.1_DP.zipDesign Guides02/19/20163991KB
订购型号
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
KSZ9021GN64VQFN0C to +70CTRAY3.823.182.892.672.54
KSZ9021GNI64VQFN-40C to +85CTRAY5.174.313.923.623.43
KSZ9021GN-TR64VQFN0C to +70CT/R3.823.182.892.672.54
KSZ9021GQI128PQFP-40C to +85CTRAY5.624.684.263.933.73
KSZ9021RL64LQFP0C to +70CTRAY3.562.962.692.492.36
KSZ9021RLI64LQFP-40C to +85CTRAY5.844.864.424.093.88
KSZ9021RN48VQFN0C to +70CTRAY3.823.182.892.672.54
KSZ9021RNI48VQFN-40C to +85CTRAY5.394.494.083.773.58
器件无铅环保信息
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
KSZ9021RL1.35000064LQFP10x10x1.4mmMatte Tine3
KSZ9021RLI1.35000064LQFP10x10x1.4mmMatte Tine3
KSZ9021GQI1.7615004.015152128PQFP14x20x2.72mmMatte Tine3
KSZ9021GQ1.7615004.015152128PQFP14x20x2.72mmMatte Tine3
KSZ9021GN-TR0.1750000.78800064VQFN8x8x0.9mmNiPdAue4
KSZ9021GNI0.1750000.79885164VQFN8x8x0.9mmNiPdAue4
KSZ9021RNI0.1312000.75769248VQFN7x7x0.9mmNiPdAue4
KSZ9021GN0.1750000.79885164VQFN8x8x0.9mmNiPdAue4
KSZ9021RN0.1312000.75769248VQFN7x7x0.9mmNiPdAue4
KSZ9021GN - Gigabit Ethernet Transceiver with GMII/MII Support KSZ9021
KSZ9021GQ - Gigabit Ethernet Transceiver with GMII/MII Support KSZ9021
KSZ9021RL/RN - Gigabit Ethernet Transceiver with RGMII Support KSZ9021
Migration Guide - KSZ9021RN to KSZ9031RNX rev 1.1 KSZ9031RNX-EVAL
AN2157 LAN9353
Micrel AN 109 KSZ8995
Micrel AN 114 KSZ8999
Micrel AN 24 KSZ8999
Micrel AN 25 KSZ8999
Micrel AN 27 KSZ8999
Micrel AN 31 KSZ8999
Micrel AN 32 KSZ8999
Micrel AN 44 KSZ8999
Micrel AN 45 KSZ8993
Micrel AN 76 KSZ9021
Micrel AN 8 KSZ8999
Micrel AN 81 KSZ8895
Micrel AN 91 KSZ8999
KSZ9021GN_v1.2_DP.zip KSZ9021
KSZ9021GQ_v1.3_DP.zip KSZ9021
KSZ9021RL_v1.2_DP.zip KSZ9021
KSZ9021RN_v1.1_DP.zip KSZ9021
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