AC104X-DS00-R datasheet(1/50 Pages) BOARDCOM

部件名	AC104X-DS00-R

功能描述	2.5V 4-Port 10/100-TX Ethernet Transceiver

PDF	50 Pages

Scroll/Zoom	100%

制造商	BOARDCOM [Broadcom Corporation.]

网页	http://www.broadcom.com

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1 / 50 page

PRELIMINARY DATA SHEET

■ AC104X

AC104X-DS00-405-R

16215 Alton Parkway • P.O. Box 57013 • Irvine, CA 92619-7013 • Phone: 949-450-8700 •Fax: 949-450-8710

12/11/01

2.5V 4-Port 10/100-TX Ethernet Transceiver

Figure 1:

Functional Block Diagram

The AC104X is a highly integrated, 2.5V, low power, four

port, 10BASE-T/100BASE-TX, Ethernet transceiver

implemented in 0.25mm CMOS technology. Multiple

modes of operation, including normal operation, test mode

and power saving mode, are available through either

hardware or software control.

Features include ENDECs, Scrambler/Descrambler, and

Auto-Negotiation (ANeg) with support for parallel

detection. The transmitter includes a dual-speed clock

synthesizer that only needs one external clock source. The

chip has built-in wave shaping driver circuit for both

10Mbps and 100Mbps, eliminating the need for an external

hybrid filter. The receiver has an adaptive equalizer / DC

restoration circuit for accurate clock / data recovery for the

100BASE-TX signal. It also provides an on-chip low pass

filer / Squelch circuit for the 10BASE-T signal.

•

4 ports with RMII MAC interface

•

4 ports with 10/100 TX media interface

• Full-Duplex or Half-Duplex

•

Very small package

• 100PQFP

•

Very low power - TYP < 280mW / port

• Cable Detect mode - TYP < 40 mW / port

• Power Down mode - TYP < 3.3 mW / port

•

2.5V .25 micron CMOS

•

RMII 3.3V tolerant I/O

•

Fully compliant with

• IEEE 802.3 / 802.3u

•RMII

•

Baseline Wander Compensation

•

Multi-Function LED outputs

•

Cable length indicator

•

Reverse polarity detection and correction with Regis-

ter Bit indication - Automatic or Forced

•

HP Auto-MDIX

•

8 programmable interrupts

Port A

Port B

Port C

Mux

MII Serial Management

Interface and Registers

PLL Clk Gen.

Test/LED Control

100TX

100RX

10TX

10RX

Auto-

Negotiation

RX

FLP

25

MHz

20

MHz

Control/Status

PHYAD[4:0]

CKIN TEST[3:0] LED Drivers

25

MHz

Port D

RMII

MDIO/MDC

TXOP/N(A)

RXIP/N(A)

TXOP/N(B)

RXIP/N(B)

TXOP/N(C)

RXIP/N(C)

PCS

.Framer

.Carrier Detect

.4B/5B

PMA

.Clock Recov.

.Link Monitor

.Signal Detect

10BASE-T

TP_PMD

.MLT-3

.BLW

.Stream Cipher

TXOP/N(D)

RXIP/N(D)

GEN E RA L DES CRI P T I O N

F E A T U RE S

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