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DP83849IF Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. DP83849IF
Description  PHYTER® DUAL Industrial Temperature with Fiber Support (FX) an Flexible Port Switching Dual Port 10/100 Mb/s Ethernet Physical Layer Transceiver
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP83849IF Datasheet(HTML) 1 Page - National Semiconductor (TI)

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© 2006 National Semiconductor Corporation
August 2006
DP83849IF PHYTER® DUAL Industrial Temperature with Fiber Support (FX) and
Flexible Port Switching Dual Port 10/100 Mb/s Ethernet Physical Layer Transceiver
General Description
The number of applications requiring Ethernet Con-
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 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 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 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 net-
work 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 DP83849IF, 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
25 MHz
Typical Application
Port A
Port B
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
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, 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)
Medical Instrumentation
Factory Automation
Motor & Motion Control
Wireless Remote Base Station
General Embedded Applications

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