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DP83849IVSX Datasheet(PDF) 2 Page - Texas Instruments |
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DP83849IVSX Datasheet(HTML) 2 Page - Texas Instruments |
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2 / 108 page  © 2008 National Semiconductor Corporation www.national.com 1 May 2008 DP83849I PHYTER® DUAL Industrial Temperature with Flexible Port Switching Dual Port 10/100 Mb/s Ethernet Physical Layer Transceiver General Description The number of applications requiring Ethernet Con- nectivity 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 sys- tem management. The DP83849I is a highly reliable, feature rich device perfectly suited for industrial applications enabling Ethernet on the factory floor. The DP83849I features two fully independent 10/100 ports for multi-port appli- cations. NATIONAL’s 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 DP83849I provides optimum flexibility in MPU selection by supporting both MII and RMII interfaces. In addition this device includes a powerful new diag- nostics tool to ensure initial network operation and maintenance. In addition to the TDR scheme, commonly used for detecting faults during installation, NATIONAL’s inno- vative cable diagnostics provides for real time continu- ous monitoring of the link quality. This allows the system designer to implement a fault prediction mech- anism to detect and warn of changing or deteriorating link conditions. With the DP83849I, National Semiconductor continues to build on its Ethernet expertise and leadership posi- tion by providing a powerful combination of features and flexibility, easing Ethernet implementation for the system designer. System Diagram PHYTER is a registered trademark of National Semiconductor Corporation Status 10BASE-T or 100BASE-TX MII/RMII/SNI 25 MHz Clock LEDs DP83849I MPU/CPU Source Typical Application MII/RMII/SNI 10BASE-T or 100BASE-TX Port A Port B Features • 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 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, Activ- ity, 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) Applications • Medical Instrumentation • Factory Automation • Motor & Motion Control • Wireless Remote Base Station • General Embedded Applications |
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