DP83848JSQSLASHNOPB datasheet(47/84 Pages) TI1

номер детали	DP83848JSQ/NOPB

подробное описание детали	MII Serial Management Interface

PDF	84 Pages

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производитель	TI1 [Texas Instruments]

домашняя страница	http://www.ti.com

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DP83848H, DP83848J, DP83848K, DP83848M, DP83848T

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SNLS250E – MAY 2008 – REVISED APRIL 2015

6.5.1.3.9 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.

6.5.1.3.10 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 deasserted. Receive clock stays active for five more

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

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DP83848JSQ/NOPB датащи(PDF) 47 Page - Texas Instruments