78Q2133 Просмотр технического описания (PDF) - Teridian Semiconductor Corporation

Номер в каталоге

Компоненты Описание

производитель

78Q2133

MicroPHY™ 10/100BASE-TX Transceiver

Teridian Semiconductor Corporation 

DESCRIPTION

The 78Q2123 and 78Q2133, MicroPHYTM, are the

smallest 10BASE-T/100BASE-TX Fast Ethernet

transceivers in the market. They include integrated

MII, ENDECs, scrambler/descrambler, dual-speed

clock recovery, and full-featured auto-negotiation

functions. The transmitter includes an on-chip pulse-

shaper and a low-power line driver. The receiver has

an adaptive equalizer and a baseline restoration

circuit required for accurate clock and data recovery.

The transceiver interfaces to Category-5 unshielded

twisted pair (Cat-5 UTP) cabling for 100BASE-TX

applications, and Category-3 unshielded twisted pair

(Cat-3 UTP) for 10BASE-T applications. The MDI is

connected to the line media via dual 1:1 isolation

transformers. No external filter is required. Interface

to the MAC is accomplished through an IEEE-802.3

compliant Media Independent Interface (MII). The

78Q2123/78Q2133 are intended to serve the

embedded Ethernet market, tailored specifically to the

needs of game consoles, broadband modems,

printers, set top boxes and audio/visual equipment. It

is designed for low-power consumption and operates

from a single 3.3V supply. The 78Q2123 is rated for

commercial temperature range and the 78Q2133 is

rated for industrial temperature range.

78Q2123/78Q2133 MicroPHY™

10/100BASE-TX Transceiver

DATA SHEET

FEATURES

April 2009

• Smallest 10/100 PHY available

• 10BASE-T/100BASE-TX IEEE-802.3 compliant

TX and RX functions requiring a dual 1:1

isolation transformer interface to the line

• Integrated MII, 10BASE-T/100BASE-TX ENDEC,

100BASE-TX scrambler/descrambler, and full-

featured auto-negotiation function

• Full duplex operation capable

• Automatic MDI/MDI-X cross over correction

• Register-programmable transmit amplitude

• Automatic polarity correction during auto-

negotiation and 10BASE-T signal reception

• Power-saving and power-down modes

including transmitter disable

• 2 Programmable LED indicators (Link and

Activity by default)

• User programmable Interrupt pin

• Package: 32-QFN (5x5 mm)

32-TPFP (5x5 mm)

• Low Power (~290mW)

• Single 3.3 V ± 0.3V Supply

• 78Q2123 rated for 0°C to 70°C operation

• 78Q2133 rated for -40°C to 85°C operation

RXC

TXC

RXD

TXD

SMI

Page: 1 of 42

100M

4B/5B Encoder,

Scrambler,

Parallel/Serial

MII

10M

Parallel/Serial,

Manchester Encoder

MII

Registers

Manchester Decoder,

Parallel/Serial

Serial/Parallel

Descrambler,

5B/4B Decoder

MRZ/NRZI

MLT3 Encoder

TX CLK GEN

Carrier Sense,

Collision Detect

CLK

Recovery

Clock Reference

Pulse Shaper

and Filter

Auto

Negotiation

Auto

MDI-X

Mux

Tx/Rx

Rx/Tx

10M 100M

Adaptive EQ,

Baseline Wander Correct,

MLT3 Decode, NRZI/NRZ

LEDs

CLKIN 25MHz

Link

Act

© 2009 Teridian Semiconductor Corporation

Rev 1.5

Share Link: