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Name: DP83849CVSX/NOPB
Brand: Texas Instruments
SKU: DP83849CVSX/NOPB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Texas Instruments DP83849CVSX/NOPB

Part No.:: DP83849CVSX/NOPB

Manufacturer:: Texas Instruments

Package:: 80-TQFP

Datasheet:: DP83849CVSX/NOPB.pdf

Description:: IC TRANSCEIVER 2/2 80TQFP

In Stock:: 2092

Quantity:: Add To Cart

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DP83849CVSX/NOPB Specifications

Package/Case:
80-TQFP
Packaging:
Tape & Reel (TR),Bulk
Series:
-
ProductStatus:
Active
Type:
Transceiver
Protocol:
Ethernet
NumberofDrivers/Receivers:
2/2
Duplex:
-
ReceiverHysteresis:
-
DataRate:
-
Voltage-Supply:
3V ~ 3.6V
OperatingTemperature:
0°C ~ 70°C
MountingType:
Surface Mount

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DP83849CVSX/NOPB information

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DP83849CVSX/NOPB Typical application Circuitry

DP83849CVSX NOPB

The DP83849CVSX/NOPB is a dual-port Ethernet physical layer transceiver (PHY) chip developed by Texas Instruments. This versatile chip is designed to facilitate Ethernet communication over twisted-pair cabling, making it ideal for a broad range of networked applications. It supports both 10Base-T and 100Base-TX Ethernet standards, enabling devices to connect at speeds up to 100 Mbps. The dual-port functionality allows for redundancy, increased throughput, or the segregation of network traffic, which is particularly beneficial in industrial applications, networked communication devices, and embedded systems requiring reliable data exchange.

Key Features and Parameters:

- Dual 10/100 Mbps Ethernet PHYs: Supports simultaneous operation of two Ethernet ports at 10 or 100 Mbps.

- Auto-Negotiation: Automates the selection of the highest performance operation mode, enhancing compatibility and network efficiency.

- Robust ESD Protection: Ensures the chip's reliability and longevity in harsh industrial environments by protecting against electrostatic discharges.

- Low Power Consumption: Optimized for energy efficiency, suitable for power-sensitive applications.

- Flexible Media Independent Interface (MII): Offers versatile connection options to a wide range of microcontrollers and Ethernet controllers.

Application Scenario: An exemplary application for the DP83849CVSX/NOPB is in an industrial Ethernet switch, where its dual-port capability can be utilized to manage network traffic efficiently, ensuring reliable communication between various devices in an industrial setting.

Circuit Design:

Incorporating the DP83849CVSX/NOPB into an industrial Ethernet switch involves meticulous planning around its pinout and connections:

1. Ethernet Interface (TX+, TX-, RX+, RX- for Ports 1 and 2, Pins 1, 2, 3, 6 and Pins 45, 46, 47, 50 respectively): Connect these pins to the RJ45 Ethernet jacks. Utilizing Ethernet transformers here is critical for signal integrity and isolation.

2. Microcontroller Interface (TXD[0-3], RXD[0-3] for both ports, Pins 11-12, 14-15 for Port 1, and Pins 55-56, 58-59 for Port 2): These pins facilitate data transfer between the DP83849CVSX/NOPB and the microcontroller. The choice between using all four pairs for MII or a reduced number for RMII depends on the required data rate and microcontroller capabilities.

3. Clock Source (X1, X2 for Ports 1 and 2, Pins 9, 10 and 53, 54 respectively): A stable clock source, such as a 25 MHz crystal, is essential for each port's operation, providing the timing for data transmission and reception.

4. Power Supply and Ground Connections (VDD, GND for Ports 1 and 2, multiple pins): Ensuring a stable 3.3V power supply to these pins is crucial, with adequate ground connections to minimize noise and interference.

5. Configuration Pins (CFG[0-4], multiple pins across the chip): These pins determine the operational mode of the DP83849CVSX/NOPB, such as the interface type and speed settings, often set through hardware strapping based on the application requirements.

Design Considerations:

- Power Supply Stability: Incorporating decoupling capacitors near the power supply pins is essential for reducing voltage fluctuations and noise.

- Signal Integrity: Careful routing of high-speed signals, adherence to impedance requirements, and the use of Ethernet transformers are key to maintaining signal quality.

- Isolation: Physical and electrical isolation between the two ports can prevent cross-channel interference, critical in switches for maintaining separate network segments.

- Thermal Management: While the DP83849CVSX/NOPB is designed for low power consumption, appropriate thermal considerations are vital for reliability, especially in industrial environments.

- PCB Layout: A thoughtful PCB layout that optimizes the placement of components and routing of traces can significantly impact the performance and reliability of the Ethernet switch.

Deploying the DP83849CVSX/NOPB within an industrial Ethernet switch not only demonstrates its capacity to handle dual-port Ethernet communications but also highlights its suitability for applications requiring robust, reliable network connectivity. This scenario showcases the DP83849CVSX/NOPB's versatility and performance, making it an ideal choice for developers looking to integrate dual-port Ethernet functionality into their designs.

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6. What is the process for return or replacement of DP83849CVSX/NOPB?

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(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of DP83849CVSX/NOPB.

(3)The PartNo is unused and only in the original unpacked packaging.

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(1)Inform us within 90 days

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