1.1 Features
123• Low-Power 3.3V, 0.18μm CMOS Technology
• Low Power Consumption <600mW Typical
• 3.3V MAC Interface
• Auto-MDIX for 10/100 Mb/s
• Energy Detection Mode
• Flexible MII Port Assignment
• Dynamic Integrity Utility
• Dynamic Link Quality Monitoring
• TDR based Cable Diagnostic and Cable Length
Detection
• Optimized Latency for Real Time Ethernet
Operation
• Reference Clock Out
• RMII Rev. 1.2 Interface (Configurable)
• SNI Interface (Configurable)
• MII Serial Management Interface (MDC and
MDIO)
• IEEE 802.3u MII
• IEEE 802.3u Auto-Negotiation and Parallel
Detection
• IEEE 802.3u ENDEC, 10BASE-T Transceivers
and Filters
• IEEE 802.3u PCS, 100BASE-TX Transceivers
and Filters
• IEEE 802.3u 100BASE-FX Fiber Interface
• IEEE 1149.1 JTAG
• Integrated ANSI X3.263 Compliant TP-PMD
Physical Sub-Layer with Adaptive Equalization
and Baseline Wander Compensation
• Programmable LED Support for Link, 10 /100
Mb/s Mode, Activity, Duplex and Collision
Detect
• Single Register Access for Complete PHY
Status
• 10/100 Mb/s Packet BIST (Built in Self Test)
• 80-pin TQFP Package (12mm x 12mm)

1.2 Applications
• Medical Instrumentation
• Factory Automation
• Motor & Motion Control
• Wireless Remote Base Station
• General Embedded Applications

1.3 Description
The number of applications requiring Ethernet Connectivity continues to expand. Along with this increased
market demand is a change in application requirements. Where single channel Ethernet used to be
sufficient, many applications such as wireless remote base stations and industrial networking now require
DUAL Port functionality for redundancy or system management.
The DP83849IF is a highly reliable, feature rich device perfectly suited for industrial applications enabling
Ethernet on the factory floor. The DP83849IF features two fully independent 10/100 ports for multi-port
applications. Texas Instruments’ unique port switching capability also allows the two ports to be configured
to provide fully integrated range extension, media conversion, hardware based failover and port
monitoring.
The DP83849IF provides optimum flexibility in MPU selection by supporting both MII and RMII interfaces.
The device also provides flexibility by supporting both copper and fiber media. In addition this device
includes a powerful new diagnostics tool to ensure initial network operation and maintenance.
In addition to the TDR scheme, commonly used for detecting faults during installation, TI’s innovative
cable diagnostics provides for real time continuous monitoring of the link quality. This allows the system
designer to implement a fault prediction mechanism to detect and warn of changing or deteriorating link
conditions.
With the DP83849IF, TI continues to build on its Ethernet expertise and leadership position by providing a
powerful combination of features and flexibility, easing Ethernet implementation for the system designer.