DP83849IFVSSLASHNOPB datasheet(58/108 Pages) TI2

Part #	DP83849IFVS/NOPB

Description	DP83849IF PHYTER™ DUAL Industrial Temperature with Fiber Support (FX) and Flexible Port Switching Dual Port 10/100 Mb/s Ethernet Physical Layer Tranceiver

PDF	108 Pages

Scroll/Zoom	100%

Manufacturer	TI2 [Texas Instruments]

Direct Link	https://www.ti.com

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58 / 108 page

DP83849IF

SNOSAX8D – JUNE 2009 – REVISED APRIL 2013

www.ti.com

7.4.9

Transmitter

The encoder begins operation when the Transmit Enable input (TX_EN) goes high and converts NRZ data

to pre-emphasized Manchester data for the transceiver. For the duration of TX_EN, the serialized

Transmit Data (TXD) is encoded for the transmit-driver pair (PMD Output Pair). TXD must be valid on the

rising edge of Transmit Clock (TX_CLK). Transmission ends when TX_EN deasserts. The last transition is

always positive; it occurs at the center of the bit cell if the last bit is a one, or at the end of the bit cell if the

last bit is a zero.

7.4.10

Receiver

The decoder detects the end of a frame when no additional mid-bit transitions are detected. Within one

and a half bit times after the last bit, carrier sense is de-asserted. Receive clock stays active for five more

bit times after CRS goes low, to ensure the receive timings of the controller.

Architecture

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DP83849IFVS/NOPB Datasheet(PDF) 58 Page - Texas Instruments