DP83848-HT datasheet(27/81 Pages) TI

Part #	DP83848-HT

Description	DP83848-HT PHYTER™ Military Temperature Single Port 10/100 MB/S Ethernet Physical Layer Transceiver

PDF	81 Pages

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Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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Scrambler

PMD OUTPUT PAIR

TX_CLK

125-MHZ Clock

BP_SCR

MUX

MLT[1:0]

Divide by 5

4B5B Code

Croup Encoder

5B Parallel

to Serial

NRZ to NRZI

Encoder

Binary to MLT-3 /

Common Driver

100Base-TX

Loopback

TXD[3:0] /

TX_EN

DP83848-HT

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SLLSEJ7 – FEBRUARY 2015

Feature Description (continued)

The block diagram in Figure 31 provides an overview of each functional block within the 100BASE-TX transmit

section.

The transmitter section consists of the following functional blocks:

•

Code-group encoder and injection block

•

Scrambler block (bypass option)

•

NRZ to NRZI encoder block

•

Binary to MLT-3 converter or common driver

The bypass option for the functional blocks within the 100BASE-TX transmitter provides flexibility for applications

where data conversion is not always required. The DP83848 implements the 100BASE-TX transmit state

machine diagram as specified in the IEEE 802.3u Standard, Clause 24.

Figure 31. 100BASE-TX Transmit Block Diagram

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DP83848-HT Datasheet(PDF) 27 Page - Texas Instruments

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