DP83849IFVSSLASHNOPBG4中文资料德州仪器数据手册PDF规格书

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.