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  Microchip Technology Semiconductor Electronic Components Datasheet  

LAN89303AM Datasheet

Three Port 10/100 Managed Ethernet Switch

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LAN89303AM
Three Port 10/100 Managed Ethernet Switch with MII/RMII
for Automotive Applications
Highlights
• Up to 200 Mbps via Turbo MII
• High performance, full featured 3-port switch with
VLAN, QoS packet prioritization, rate limiting,
IGMP monitoring and management functions
• Serial management via I2C or SMI
• Unique Virtual PHY feature simplifies software
development by mimicking the multiple switch
ports as a single port PHY
Target Applications
• Diagnostic interface (for dealership service bay)
• Fast software download (e.g., OBD connector)
• Gateway service interface
(dealership, after-market repair shop)
• In-Vehicle engineering development interface
• Vehicle manufacturing test interface
(production plant assembly line)
• Legislated inspections
(emissions check, safety inspections)
Key Benefits
• Ethernet Switch Fabric
- 32k buffer RAM
- 512 entry forwarding table
- Port-based IEEE 802.1Q VLAN support
(16 groups)
- IEEE 802.1D spanning tree protocol support
- Four separate transmit queues available per port
- Fixed or weighted egress priority servicing
- QoS/CoS packet prioritization
- Input priority determined by VLAN tag,
DA lookup, TOS, DIFFSERV or port default
value
- Programmable traffic class map based on
input priority on per port basis
- Remapping of 802.1Q priority field on per
port basis
- Programmable rate limiting at the ingress
with coloring and random early discard, per
port/priority
- Programmable rate limiting at the egress
with leaky bucket algorithm, per port/priority
- IGMP v1/v2/v3 monitoring for multicast packet
filtering
- IPV6 multicast listener discovery monitoring
- Programmable broadcast storm protection with
global % control and enable per port
- Programmable buffer usage limits
- Dynamic queues on internal memory
- Programmable filter by MAC address
• Switch Management
- Port mirroring/monitoring/sniffing: ingress and/or
egress traffic on any port or port pair
- Fully compliant statistics (MIB) gathering counters
- Control registers configurable on-the-fly
• Ports
- Port 0 - MII MAC, MII PHY, RMII™ PHY modes
- 2 internal 10/100 PHYs with HP Auto-MDIX
support
- 200 Mbps Turbo MII (PHY or MAC mode)
- Fully compliant with IEEE 802.3 standards
- 10BASE-T and 100BASE-TX support
- Full and half duplex support
- Full duplex flow control
- Back-pressure (forced collision) half duplex flow
control
- Automatic flow control based on programmable
levels
- Automatic 32-bit CRC generation and checking
- 2k Jumbo packet support
- Programmable interframe gap, flow control pause
value
- Full transmit/receive statistics
- Full LED support per port
- Auto-Negotiation
- Automatic polarity correction
- Automatic MDI/MDI-X
• Serial Management
- I2C (slave) access to all internal registers
- MIIM (MDIO) access to PHY related registers
- SMI (extended MIIM) access to all internal
registers
• Other Features
- General Purpose Timer
- I2C Serial EEPROM interface
- Programmable GPIOs/LEDs
• Single 3.3 V power supply
• Packaging
- 56-pin QFN RoHS-compliant package
• Environmental
- Automotive grade temp. support (-40 to +85 °C)
2010-2017 Microchip Technology Inc.
DS60001308C-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

LAN89303AM Datasheet

Three Port 10/100 Managed Ethernet Switch

No Preview Available !

LAN89303AM
TO OUR VALUED CUSTOMERS
It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip
products. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined and
enhanced as new volumes and updates are introduced.
If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via
E-mail at docerrors@microchip.com. We welcome your feedback.
Most Current Data Sheet
To obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at:
http://www.microchip.com
You can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page.
The last character of the literature number is the version number, (e.g., DS30000000A is version A of document DS30000000).
Errata
An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for current
devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the revision
of silicon and revision of document to which it applies.
To determine if an errata sheet exists for a particular device, please check with one of the following:
• Microchip’s Worldwide Web site: http://www.microchip.com
• Your local Microchip sales office (see last page)
When contacting a sales office, please specify which device, revision of silicon and data sheet (include -literature number) you are
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DS60001308C-page 2
2010-2017 Microchip Technology Inc.


Part Number LAN89303AM
Description Three Port 10/100 Managed Ethernet Switch
Maker Microchip
Total Page 30 Pages
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