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DP83848JSQ/NOPB Datasheet(PDF) 64 Page - Texas Instruments

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Part # DP83848JSQ/NOPB
Description  MII Serial Management Interface
PDF  84 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

DP83848JSQ/NOPB Datasheet(HTML) 64 Page - Texas Instruments

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DP83848H, DP83848J, DP83848K, DP83848M, DP83848T
SNLS250E – MAY 2008 – REVISED APRIL 2015
www.ti.com
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. Below is a partial list
of recommended transformers. It is important that the user realize that variations with PCB and
component characteristics require 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
64
Application, Implementation, and Layout
Copyright © 2008–2015, Texas Instruments Incorporated
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Product Folder Links: DP83848H DP83848J DP83848K DP83848M DP83848T



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