88e1121r Marvell Semiconductor, Inc., 88e1121r Datasheet - Page 2

• Manufacturer Part Number: 88e1121r
• Description: Dual-port Gigabit Ethernet Transceiver With Integrated Passives
• Manufacturer: Marvell Semiconductor, Inc.

Marvell Alaska 88E1121R
SPECIAL FEATURES
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BLOCK DIAGRAM
THE MARVELL ADVANTAGE:
diagnostic tools, documentation, and other items to assist customers with product evaluation and production. Marvell’s worldwide fi eld application
engineers collaborate closely with end customers to develop and deliver new leading-edge products for quick time-to-market. Marvell utilizes world-
leading semiconductor foundry and packaging services to reliably deliver high-volume and low-cost total solutions.
ABOUT MARVELL:
transceiver, communications controller, processors, wireless, power management and storage solutions that power the entire communications infrastructure,
including enterprise, metro, home, storage, and digital entertainment solutions. For more information, visit our website at www.marvell.com.
Supports RGMII interface
Four RGMII timing modes
Integrated MDI interface termination resistors and capacitors
Energy detect and energy detect+ low-power modes
Coma mode support
“Downshift” mode for two-pair cable installations
Automatic MDI/MDIX crossover at all speeds of operation
Automatic polarity correction
Line and system loopback modes and packet generator
IEEE 802.3u compliant Auto-Negotiation
Software programmable LED modes including LED testing
Supports IEEE 1149.1 JTAG
MDC/MDIO management interface
Advanced Marvell Virtual Cable Tester (advanced Marvell VCT
Marvell is the leader in storage, communications and consumer silicon solutions. Marvell’s diverse product portfolio includes switching,
Marvell Semiconductor, Inc.
5488 Marvell Lane
Santa Clara, CA 95054
Phone [phone]
www.marvell.com
Marvell products come with complete reference designs which include board layout designs, software, manufacturing
Fig 2. 88E1121R Functional Block Diagram of Single Port
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BENEFITS
Signifi cantly reduces pin count on board design
Eliminates the need for on-board delay lines
Reduces board space and BOM cost, improves signal integrity, improves
reliability resulting in overall system cost
Reduces power consumption and extends battery life
Flexible power-down functionality
Compatible with legacy cables/applications. Preserves the Ethernet link
should the quality deteriorate in four-pair cables
Eases installation and reduces costs by working with both straight
and cross-over cables
Compensates for wiring problems
Enables testing and debugging in stand-alone mode
Automatically confi gures to 10, 100, or 1000 Mbps operation
Allows for a user-defi ned LED confi guration
Simplifi es board level testing/debugging
Provides fl exible management options
Identifi es and isolates cable faults
Copyright © 2007. Marvell International Ltd. All rights reserved. Marvell, the Marvell logo,
Moving Forward Faster, Alaska, Datacom Systems on Silicon, Fastwriter, Libertas, Link Street,
NetGX, PHYAdvantage, Prestera, Raising The Technology Bar, The Technology Within, Virtual
Cable Tester, and Yukon are registered trademarks of Marvell. Marvell Makes It All Possible, Ants,
AnyVoltage, Discovery, DSP Switcher, Feroceon, GalNet, GalTis, Horizon, RADLAN, UniMAC, and
VCT are trademarks of Marvell. All other trademarks are the property of their respective owners.
88E1121R-001
4/07