DP83849IF_08 Datasheet, PDF (1/90 Pages) National Semiconductor (TI) – PHYTER® DUAL Industrial Temperature with Fiber Support (FX) and Flexible Port Switching Dual Port 10/100 Mb/s Ethernet Physical Layer Tranceiver

October 7, 2008
DP83849IF
PHYTER® DUAL Industrial Temperature with Fiber Support
(FX) and Flexible Port Switching Dual Port 10/100 Mb/s
Ethernet Physical Layer Tranceiver
General Description
The number of applications requiring Ethernet Connectivity
continues to expand. Along with this increased market de-
mand is a change in application requirements. Where single
channel Ethernet used to be sufficient, many applications
such as wireless remote base stations and industrial network-
ing now require DUAL Port functionality for redundancy or
system management.
The DP83849IF is a highly reliable, feature rich device per-
fectly suited for industrial applications enabling Ethernet on
the factory floor. The DP83849IF features two fully indepen-
dent 10/100 ports for multi-port applications. NATIONAL’s
unique port switching capability also allows the two ports to
be configured to provide fully integrated range extension, me-
dia 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, NATIONAL’s innovative cable diag-
nostics 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 de-
teriorating link conditions.
With the DP83849IF, National Semiconductor continues to
build on its Ethernet expertise and leadership position by pro-
viding a powerful combination of features and flexibility, eas-
ing Ethernet implementation for the system designer.
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 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)}
Applications
■ ^{Medical Instrumentation}
■ ^{Factory Automation}
■ ^{Motor & Motion Control}
■ ^{Wireless Remote Base Station}
■ ^{General Embedded Applications}
PHYTER^® is a registered trademark of National Semiconductor.
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