cs8904 Cirrus Logic, Inc., cs8904 Datasheet

cs8904

Manufacturer Part Number

cs8904

Description

Crystal Lan? Quad Ethernet Transceiver

Manufacturer

Cirrus Logic, Inc.

Datasheet

1.CS8904.pdf (34 pages)

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Part Number:

cs8904-CM5

Manufacturer:

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FEATURES

ORDERING INFORMATION

FEB ‘98

Single-Chip Quad IEEE 802.3-compliant Ethernet

Interface

3 V and 5 V Operation

Full and Half Duplex Operation

Auto-Negotiation with Manual Override Capability

Four 10BASE-T Ports with Integrated Active Ana-

log Filters

Automatic Polarity Detection and Correction

Integrated Manchester Encoder/Decoders

(ENDEC)

Link Status LED Driver for Each Port

Per Port Control - Manual Duplex select (Half or

Full), Auto-Negotiation select, Loopback select

Per Port Status - Collision detect, Carrier detect,

Jabber indication, Link status, Duplex status,

Auto-Negotiation status

CS8904-CM5 0 to 70 °C

CS8904-CM3 0 to 70 °C

CDK8904-5

CONTROL(4)

STATUS (5)

RxDATA

TxDATA

RxCLK

TxCLK

VDD(11) GND(13)

CIRRUS LOGIC ADVANCED PRODUCT DATABOOK

CS8904 Quad Ethernet Transceiver

100-pin MQFP, 5.0 V

100-pin MQFP, 3.3 V

Developer’s Kit, 5.0 V

Encoder/Decoder & PLL

MODE(3)

Cirrus Logic, Inc. 1998

RESET

10BASE-T TX Filters &Transmitter

DESCRIPTION

The CS8904 combines four 10BASE-T Ethernet EN-

DECs and transceivers into a single low-cost device.

Complete on-chip 10BASE-T Transceivers and filters

eliminate external components, saving valuable board

space and reducing cost. The CS8904 offers maximum

design flexibility by providing individual control and sta-

tus lines for each of the four interface ports.

The CS8904 supports full-duplex operation, allowing si-

multaneous transmission and reception on all ports.

Auto-negotiation allows the automatic selection of ei-

ther half or full duplex operation on a per-port basis.

The CS8904 is ideally suited for cost-sensitive Ethernet

switch designs. With the CS8904, engineers can design

a four-port Ethernet Transceiver circuit that occupies

less than 1.0 square inch (6.5 sq. cm) of space, exclu-

sive of transformers and RJ-45 connectors.

10BASE-T RX Filters & Receiver

RES

Ethernet Transceiver

Crystal LAN™ Quad

Clock

20 MHz XTAL

Advanced Product Databook

RJ-45 10BASE-T

LINK LED

CS8904

DS191PP2

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