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DP83849C Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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DP83849C Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 96 page  © 2006 National Semiconductor Corporation www.national.com 1 August 2006 DP83849C PHYTER® DUAL Commercial Temperature 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 DP83849C is a highly reliable, feature rich device perfectly suited for commercial or industrial applica- tions enabling Ethernet on the factory floor. The DP83849C features two fully independent 10/100 ports for multi-port applications. The DP83849C 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, com- monly used for detecting faults during installation, NATIONAL’s innovative cable diagnostics provides for real time continuous monitoring of the link quality. This allows the system designer to implement a fault pre- diction mechanism to detect and warn of changing or deteriorating link conditions. With the DP83849C, National Semiconductor contin- ues to build on its Ethernet expertise and leadership position by providing a powerful combination of fea- tures 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 DP83849C MPU/CPU Source Typical Application MII/RMII/SNI 10BASE-T or 100BASE-TX Port A Port B Features • Low-power 3.3V, 0.18 µm CMOS technology • Low power consumption <600mW Typical • 3.3V MAC Interface • Auto-MDIX for 10/100 Mb/s • Energy Detection Mode • 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 • 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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