Specifications

DP83848C

DP83848I

DP83848VYB, DP83848YB

SNLS266E –MAY 2007–REVISED MARCH 2015

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7 Application, Implementation, and Layout

NOTE

Information in the following applications sections is not part of the TI component

specification, and TI does not warrant its accuracy or completeness. TI’s customers are

responsible for determining suitability of components for their purposes. Customers should

validate and test their design implementation to confirm system functionality.

7.1 Application Information

The device is a physical layer Ethernet transceiver. Typical operating voltage is 3.3 V with power

consumption less than 270 mW. When using the device for Ethernet application, it is necessary to meet

certain requirements for normal operation of device. Following typical application and design requirements

can be used for selecting appropriate component values for DP83848.

7.2 Typical Application

Figure 7-1. Typical Application Schematic

7.2.1 Design Requirements

The design requirements for DP83848 are:

• Vin = 3.3 V

• Vout = Vcc – 0.5 V

• Clock Input = 25 MHz for MII and 50 MHz for RMII

7.2.1.1 TPI Network Circuit

Figure 7-2 shows the recommended circuit for a 10/100 Mb/s twisted pair interface. To the right is a partial

list of recommended transformers. It is important that the user realize that variations with PCB and

component characteristics requires that the application be tested to ensure that the circuit meets the

requirements of the intended application.

• Pulse H1102

• Pulse H2019

• Pulse J0011D21

• Pulse J0011D21B

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Product Folder Links: DP83848C DP83848I DP83848VYB DP83848YB