DP83849C
- 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
- 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)
The 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 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 applications. NATIONALs 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 additional 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 DP83849IVS, 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.
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技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | PHYTER DUAL Commercial Temp Dual Port 10/100 Mb/s Ethernet Phy Layer X-ceiver datasheet (Rev. D) | 2008/5/27 | |||
| 應用說明 | How to Pass IEEE Ethernet Compliance Tests | PDF | HTML | 2021/9/20 | |||
| 應用說明 | Selection and specification of crystals for Texas Instruments ethernet physical | 2019/2/6 | ||||
| 應用說明 | AN-1507 DP83848 and DP83849 100Mb Data Latency (Rev. B) | 2013/4/26 | ||||
| 應用說明 | AN-1508 DP83849 Cable Diagnostics (Rev. A) | 2013/4/26 | ||||
| 應用說明 | AN-1509 PhyterDual Flexible Port Switching (Rev. B) | 2013/4/26 | ||||
| 應用說明 | Reducing Radiated Emissions in Ethernet 10/100 LAN Applications (Rev. A) | 2013/4/26 | ||||
| 應用說明 | AN-1548 PHYTER 100 Base-TX Reference Clock Jitter Tolerance (Rev. B) | 2013/4/26 | ||||
| 應用說明 | AN-1540 Power Measurement of Ethernet Physical Layer Products (Rev. B) | 2013/4/26 | ||||
| 應用說明 | AN-1469 PHYTER® Design & Layout Guide (Rev. D) | 2013/4/26 | ||||
| 使用指南 | DP83849IVS-EVK User Guide | 2012/2/23 |
設計與開發
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ETHERNET-SW — 乙太網路 PHY 驅動程式和工具
德州儀器乙太網路實體層 (PHY) 收發器的驅動程式支援透過序列管理介面 (MDC/MDIO) 進行通訊，以配置及讀取 PHY 暫存器。如需 Linux 和 RTOS 驅動程式，請前往我們的 github。
USB-2-MDIO — USB-2-MDIO Tool v1.0
USB-2-MDIO 軟體工具可讓德州儀器的乙太網路 PHY 存取 MDIO 狀態和裝置控制暫存器。 USB-2-MDIO 工具包括 LaunchPad™ 開發套件，適用於與輕型 GUI 連接的 TI MSP430™ MCU。 LaunchPad 開發套件實作 MDIO 匯流排控制器，可處理連接匯流排之 PHY 上的暫存器。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| TQFP (PFC) | 80 | Ultra Librarian |