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DP83849I Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. DP83849I
Description  DP83849I PHYTER DUAL Industrial Temperature with Flexible Port Switching Dual Port 10/100 Mb/s Ethernet Physical Layer Transceiver
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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© 2006 National Semiconductor Corporation
www.national.com
1
August 2006
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, 0.18
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 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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Datasheet Download



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