Features: • Low-power 3.3V, 0.18m 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)Application• Medical Instrumentation
• Factory Automation
• Motor & Motion Control
• Wireless Remote Base Station
• General Embedded ApplicationsSpecifications
| Temperature Min |
-40 deg C |
| Temperature Max |
85 deg C |
| Supply Voltage |
3.3 Volt |
| View Using Catalog |
Supply Voltage (VCC) -0.5 V to 4.2 V
DC Input Voltage (VIN) -0.5V to VCC + 0.5V
DC Output Voltage (VOUT) -0.5V to VCC + 0.5V
Storage Temperature (TSTG) -65oC to 150°C
Lead Temp. (TL)
(Soldering, 10 sec.) 260 °C
ESD Rating
(RZAP = 1.5k, CZAP = 100 pF) 4.0 kVDescriptionThe number of applications requiring Ethernet Connectivity 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 system 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 applications. 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 network operation and maintenance.
In addition to the TDR scheme, commonly 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 prediction mechanism to detect and warn of changing or deteriorating link conditions.
With the DP83849IF, National Semiconductor continues to build on its Ethernet expertise and leadership position by providing a powerful combination of features and flexibility, easing Ethernet implementation for the system designer.
Design Tools
| Title |
Size in Kbytes |
Date |
|
|
|
| Ethernet Integrity Utility Tool for Support and Diagnostics |
5 Kbytes |
21-Mar-2008 |
View |
|
|
| DP83849 Reference Designs |
|
|
View |
|
|
If you have trouble printing or viewing PDF file(s), see Printing Problems.
|
Application Notes
| Title |
Size in Kbytes |
Date |
|
| AN-1548: Application Note 1548 PHYTER 100 Base-TX Reference Clock Jitter Tolerance |
161 Kbytes |
2-Oct-07 |
Download |
AN-1548 (Chinese): Application Note 1548 PHYTER 100 Base-TX Reference Clock Jitter Tolerance
|
680 Kbytes |
|
|
| AN-1540: Application Note 1540 Power Measurement of Ethernet Physical Layer Products |
170 Kbytes |
2-Oct-07 |
Download |
| AN-1862: Application Note 1862 Reducing Radiated Emissions in Ethernet 10/100 LAN Applications |
117 Kbytes |
4-Jun-08 |
Download |
| AN-1881: Application Note 1881 Improving Electro-Magnetic Noise Immunity in Serial Communications Systems |
110 Kbytes |
28-Jul-08 |
Download |
| AN-1469: Application Note 1469 PHYTER? Design & Layout Guide |
341 Kbytes |
29-Apr-08 |
Download |
AN-1469 (Chinese): Application Note 1469 PHYTER? Design & Layout Guide
|
484 Kbytes |
|
|
| AN-1509: Application Note 1509 PhyterDual Flexible Port Switching |
233 Kbytes |
21-May-07 |
Download |
AN-1509 (Chinese): Application Note 1509 PhyterDual Flexible Port Switching
|
384 Kbytes |
|
|
| AN-1508: Application Note 1508 DP83849 Cable Diagnostics |
796 Kbytes |
4-Aug-06 |
Download |
AN-1508 (Chinese): Application Note 1508 DP83849 Cable Diagnostics
|
524 Kbytes |
|
|
| AN-1507: Application Note 1507 DP83848 and DP83849 100Mb Data Latency |
575 Kbytes |
4-Aug-06 |
Download |
AN-1507 (Chinese): Application Note 1507 DP83848 and DP83849 100Mb Data Latency
|
350 Kbytes |
|
|
If you have trouble printing or viewing PDF file(s), see Printing Problems.
|
DP83849IF Data Sheet
