AM79C98 Просмотр технического описания (PDF) - Advanced Micro Devices

Номер в каталоге

Компоненты Описание

производитель

AM79C98

Twisted-Pair Ethernet Transceiver (TPEX)

Advanced Micro Devices 

TEST

Test

Input, Active HIGH

This pin should be tied HIGH for normal operation. If

this pin is driven LOW, TPEX will enter Loopback Test

mode. The type of loopback is determined by the state

of the SQE TEST pin. If this pin is in the LOW state

(Station MAU), TPEX transfers data independently

from DO to the TXD/TXP circuit and from RXD to the DI

circuit. If the SQE TEST is in the HIGH state (Repeater

MAU), then data on the RXD circuit is transmitted back

onto the TXD/TXP circuit and data on the DO circuit is

transmitted onto the DI pair.

TXD+, TXD–

Transmit Data

Output

10BASE-T port differential drivers.

TXP+, TXP–

Transmit Predistortion

Output

Transmit waveform predistortion control.

XMT

Transmit

Output

This pin is driven HIGH while TPEX is receiving data on

the AUI DO pair and is transmitting data on the TXD/

TXP pins. The XMT and RCV pins are simultaneously

driven HIGH during collision.

Am79C98

7

Share Link: