LAN9303

Microchip's LAN9303/LAN9303i is a high-performance, small-footprint, full-featured 3-port managed Ethernet switch. This device is application-optimized for consumer, and embedded electronics designs which have a rapid development cycle and require low-cost switching functionality, flexibility and ease of integration.

Featuring the industry's smallest form factor 3-port switch, the LAN9303/9303i supports compact PCB design and MII/RMII/Turbo MII (Media Independent, Reduced Media Independent and Turbo Media Independent Interfaces). This device supports Turbo MII mode to accomplish network speeds up to 200 Mbps. The virtual PHY feature mimics a single PHY connection through the MII/RMII/Turbo MII interface to the host SoC, which can reduce software development time. This feature also allows system designers to swap the single PHY and Ethernet switch to create multiple SKUs from the same software driver. Additionally, the LAN9303/9303M offer the industry's highest (±8kV/15kV) per-port ESD protection.

The LAN9303/9303i switch combines all of the functions of a 10/100 system, including the switch fabric, packet buffers, buffer management, MACs, PHY transceivers and optional serial management functions. Both devices comply with IEEE 802.3 10BASE-T and 100BASE-TX Ethernet protocol specifications, enabling compatibility with industry standard Ethernet and Fast Ethernet applications.

Microchip's complimentary and confidential LANCheck® online design review service is available for customers who have selected our products for their application design-in*.

Features
  • High-performance, full-featured 3-port switches with per-port IEEE 802.1Q VLAN support (up to 16 VLAN groups)
  • Industry's highest (±8kV/15kV) per-port ESD protection
  • IGMP v1/v2 monitoring for multicast packet filtering
  • Up to 200 Mbps network speed via a Turbo MII interface
  • Optional EEPROM or external CPU serial management support via an I2C™ interface
  • Virtual PHY feature simplifies software development by mimicking multiple switch ports as a single-port PHY
  • Integrated regulators require a single 3.3V supply
  • 42 per-port MIB counters for efficient network management
  • Industrial temperature (-40° to 85°C) options available (LAN9303i/9303Mi)
  • Package options: LAN9303: 8x8mm, 56-pin QFN package for single MII/RMII/Turbo MII
  • LAN9303: 8x8mm, 56-pin QFN package for single MII/RMII/Turbo MII
  • Cable, Satellite, and IP Set-top Boxes (STBs)
  • Digital Televisions (DTVs)
  • Digital/Personal Video Recorders (DVRs/PVRs)
  • VoIP/Video Phone Systems
  • Home Gateways/Consumer Audio/Video
  • Test/Measurement Equipment
  • Industrial Automation and Control
Parameter
Parameter Name Value Value
Description 10/100 3-port Managed Ethernet Switches 10/100 3-port Managed Ethernet Switches
Ethernet Bandwidth 10Base-T/ 100Base-TX 10Base-T/ 100Base-TX
MAC Yes Yes
PHY Yes Yes
TX/RX RAM Buffer(Bytes) 32K 32K
Interrupt Pin Yes Yes
LEDs 6 6
Op. Voltage (V) 3.3 3.3
# Ethernet Ports 3 3
Interface MII/RMII/Turbo MII MII/RMII/Turbo MII
I/O Pins 6 6
Temp. Range Min. (°C) -40 -40
Temp. Range Max. (°C) 85 85
# of Ports 3 3
Host Interface MII / RMII MII / RMII
Turbo MII Yes Yes
# of Ether Ports 3 3
Supply Voltage (V) 3.3 3.3
Vdd I/O (V) 3.3 3.3
Documents
LAN9303/LAN9303i Small Form Factor Three Port 10/100 Managed Ethernet Switch wiData Sheets07/08/20112590KB
AN17.18 - SMSC Design Guide for Power over Ethernet ApplicationsAppNote09/20/2009445KB
AN2157 - Transient Protection in Power Over Ethernet ApplicationsAppNote05/24/2016229KB
AN8.13 - Suggested MagneticsAppNote06/28/2011240KB
LAN9303 IBIS Models lan9303-azbj.ibsIBIS11/18/2008351KB
LAN9303i IBIS Models lan9303i-azbj.ibsIBIS11/18/2008331KB
LAN93xx EEPROM Configuration Tool (ECT)Software Library08/12/2009
LAN93xx Linux source code and binariesSoftware Library08/20/2009
LAN9303 56-pin QFN Package Component Placement ChecklistDesign Checklist04/07/201189KB
LAN9303 56-pin QFN Package Routing ChecklistDesign Checklist04/25/201146KB
LAN9303 QFN Rev B Schematic ChecklistDesign Checklist07/06/2012217KB
LAN9303M QFN Rev B Schematic ChecklistDesign Checklist09/03/2013161KB
LAN9303/LAN9303i Small Form Factor Three Port 10/100 Managed Ethernet Switch wiProduct Briefs07/08/2011233KB
LAN9303 Reference Design Bill of MaterialsSchematics06/10/201019KB
LAN9303 Reference Design SchematicSchematics06/11/201040KB
LAN9303i Reference Design Bill of MaterialsSchematics06/10/201019KB
LAN9303i Reference Design SchematicSchematics06/11/201038KB
Ordering Information
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
LAN9303-ABZJ56VQFN0C to +70CTRAY5.484.574.154.013.97
LAN9303-ABZJ-TR56VQFN0C to +70CT/R**********
LAN9303I-ABZJ56VQFN-40C to +85CTRAY6.805.675.154.984.92
LAN9303I-ABZJ-TR56VQFN0C to +70CT/R6.935.775.255.075.01
相关开发工具
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RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
LAN9303I-ABZJ0.1824601.19230856VQFN8x8x0.9Matte Tine3
LAN9303-ABZJ0.1824601.19230856VQFN8x8x0.9Matte Tine3
LAN9303-ABZJ-TR0.1824600.30000056VQFN8x8x0.9Matte Tine3
LAN9303I-ABZJ-TR0.1824600.30000056VQFN8x8x0.9Matte Tine3
LAN9303M-AKZE0.2206001.84523872VQFN10x10x0.9mmMatte Tine3
LAN9303MI-AKZE0.2206001.84523872VQFN10x10x0.9mmMatte Tine3
LAN9303M-AKZE-CAG0.2206001.84523872VQFN10x10x0.9mmMatte Tine3
LAN9303/LAN9303i Small Form Factor Three Port 10/100 Managed Ethernet Switch wi LAN9303
AN17.18 LAN9311
AN2157 LAN9355
AN8.13 LAN9354
LAN9303 56-pin QFN Package Component Placement Checklist LAN9303
LAN9303 56-pin QFN Package Routing Checklist LAN9303
LAN9303 QFN Rev B Schematic Checklist LAN9303
LAN9303M QFN Rev B Schematic Checklist LAN9303M
LAN9303/LAN9303i Small Form Factor Three Port 10/100 Managed Ethernet Switch wi LAN9303
LAN9303 Reference Design Bill of Materials LAN9303
LAN9303 Reference Design Schematic LAN9303
LAN9303i Reference Design Bill of Materials LAN9303
LAN9303i Reference Design Schematic LAN9303
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