DP83849IF_06 Datasheet, PDF (1/108 Pages) National Semiconductor (TI) – DUAL Industrial Temperature with Fiber Support (FX) and Flexible Port Switching Dual Port 10/100 Mb/s Ethernet Physical Layer Transceiver

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
Features
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 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.
• 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, 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
System Diagram
100BASE-FX
MPU/CPU
MII/RMII/SNI
MII/RMII/SNI
Port B
DP83849IF
Port A
25 MHz
Clock
Source
Status
LEDs
Typical Application
PHYTER is a registered trademark of National Semiconductor Corporation
© 2006 National Semiconductor Corporation
1
10BASE-T
or
100BASE-TX
10BASE-T
or
100BASE-TX
100BASE-FX
www.national.com