88E3082-C1-BAR1I000

Overview

The Marvell Alaska 88E3082-C1-BAR1I000 is a third-generation, DSP-based 8-port 10/100BASE-T Fast Ethernet transceiver. It delivers industry-leading power efficiency at 150mW per port and supports IEEE 802.3u Auto-Negotiation for full or half-duplex operation over twisted-pair cables. The device integrates Virtual Cable Tester (VCT) technology for remote diagnostics and offers flexible digital interfaces including RMII, SMII, and SSSMII to reduce MAC-PHY pin counts. It features selectable PECL interfaces for 100BASE-FX fiber applications on all ports, Jumbo frame support up to 10 KB with +/-150 ppm clock jitter tolerance, and extended 100BASE-TX performance beyond 150 meters.

Feature Summary

• Ultra-low power dissipation of 150mW per port enables higher switch density and reduced system costs.
• Integrated Virtual Cable Tester (VCT) technology facilitates remote cable quality analysis and fault detection.
• Supports flexible MAC-to-PHY connectivity via RMII, SMII, and source-synchronous SSSMII interfaces.
• Provides selectable PECL interfaces for 100BASE-FX fiber-optic network compatibility on every port.

Applications

• High-port density Fast Ethernet routers
• Fast Ethernet hubs
• Cost-effective Fast Ethernet switches

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current product brief to confirm package type and temperature range. Ensure the design accommodates the 224-pin TFBGA footprint. Confirm interface requirements such as RMII availability before finalizing procurement.

Selection Notes

Select this component when maximizing port density within strict thermal constraints is required. The inclusion of VCT aids in manufacturing testing and field maintenance. Verify that the target application requires eight independent copper ports with optional fiber capability on all channels.

Part Context

This part belongs to the Marvell Alaska family of Fast Ethernet transceivers. It is functionally related to the 88E3083, which shares similar core capabilities but differs in package size, interface support, and fiber port allocation.

Replacement Considerations

The 88E3083 serves as a direct alternative within the same product family. Designers must account for differences in package dimensions, available digital interfaces, and the number of ports supporting 100BASE-FX fiber operations.

FAQ

Does the 88E3082 support fiber optic connections?

Yes, it includes a selectable PECL interface that allows for 100BASE-FX fiber-optic network operation on each individual port.

What is the maximum packet size supported?

The device supports Jumbo frames up to 10 KB, accommodating clock jitter of up to +/-150 ppm.

How does the device reduce I/O pin count between the MAC and PHY?

It supports Reduced Media Independent Interface (RMII), Serial Media Independent Interface (SMII), and source-synchronous SMII (SSSMII).