LXT9761HC datasheet, PDF - EEWORLD Datasheet

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LXT9761HC: DescriptionEthernet Transceiver, 6-Trnsvr, PQFP208, PLASTIC, QFP-208; CategoryWireless rf/communication Telecom circuit; File Size1MB，80 Pages; ManufacturerLevel One

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LXT9761HC Overview

Ethernet Transceiver, 6-Trnsvr, PQFP208, PLASTIC, QFP-208

LXT9761HC Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Maker	Level One
Parts packaging code	QFP
package instruction	QFP, QFP208,1.2SQ,20
Contacts	208
Reach Compliance Code	unknown
data rate	100000 Mbps
JESD-30 code	S-PQFP-G208
JESD-609 code	e0
Number of functions	1
Number of terminals	208
Transceiver quantity	6
Maximum operating temperature	70 °C
Minimum operating temperature
Package body material	PLASTIC/EPOXY
encapsulated code	QFP
Encapsulate equivalent code	QFP208,1.2SQ,20
Package shape	SQUARE
Package form	FLATPACK
power supply	3.3 V
Certification status	Not Qualified
Maximum slew rate	0.828 mA
Nominal supply voltage	3.3 V
surface mount	YES
Telecom integrated circuit types	ETHERNET TRANSCEIVER
Temperature level	COMMERCIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	GULL WING
Terminal pitch	0.5 mm
Terminal location	QUAD
Base Number Matches	1

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Data Sheet - Preliminary Information

OCTOBER, 1999

Revision 1.0

LXT9761 / 9781

General Description

The LXT9781 is an eight-port PHY Fast Ethernet

Transceiver that supports IEEE 802.3 physical layer

applications at both 10 Mbps and 100 Mbps. It provides a

Reduced Media Independent Interface (RMII) for

switching and other independent port applications. The

LXT9761 offers the same features and functionality in a

six-port device. This data sheet uses the singular

designation “LXT97x1” to refer to both devices.

All network ports provide a combination twisted-pair (TP)

or pseudo-ECL (PECL) interface for a 10/100BASE-TX or

100BASE-FX connection.

The LXT97x1 provides three discrete LED driver outputs

for each port, as well as eight global serial LED outputs.

The device supports both half- and full-duplex operation at

10 Mbps and 100 Mbps, and requires only a single 3.3V

power supply.

Fast Ethernet 10/100 Multi-Port Transceiver with RMII

Features

• Six or eight IEEE 802.3-compliant 10BASE-T or

100BASE-TX ports with integrated filters

• 3.3V operation

• Optimized for dual-high stacked R45 applications

• Proprietary Optimal Signal Processing™ architecture

improves SNR by 3 dB over ideal analog filters

• Robust baseline wander correction

100BASE-FX fiber-optic capability on all ports

• Supports both auto-negotiation and legacy systems

without auto-negotiation capability

• JTAG boundary scan

• Multiple Reduced MII (RMII) ports for independent

PHY port operation

• Configurable via MDIO port or external control pins.

• Maskable interrupts

• Low power consumption (378 mW per port, typical)

• 208-pin PQFP (LXT9761 and LXT9781)

• 272-pin PBGA (LXT9781 only)

Applications

• 100BASE-T, 10/100-TX, or 100BASE-FX Switches

and multi-port NICs.

LXT9781 Block Diagram

REFCLK

QSTAT

QCLK

ADD<4:0>

MDIO

MDC

MDINT

Management /

Mode Select

Logic

Global Functions

Clock

Generator

Pwr Supply /

PwrDown

TXENn

TX PCS

RMII

T X D

n_0

T X D

n_1

Parallel/Serial

Converter

Manchester

Encoder

Scrambler

100

& Encoder

Auto

Negotiation

Driver

TP / Fiber

Out

VCC

GND

PWRDWN

RESET

LEDS<7:0>

LEDLATCH

LEDCLK

O S P

Pulse

Shaper

TPFOPn

TPFONn

Mgmt Counters

CIM

ECL

Driver

S D

/TX

O S P

Clock

Generator

Media

Select

Adaptive EQ

with BaseLine

Wander

Cancellation

100TX

100FX

RMII

RX PCS

R X D

CRS_DVn

RXERn

Serial to

Parallel

Carrier Sense Converter

Data Valid

Error Detect

Manchester

Decoder

OSP

TP / Fiber

TPFIP

TPFIN

Decoder &

100

Descrambler

Slicer

10BT

PORT 0

Per-Port Functions

PORT 1

PORT 2

PORT 3

PORT 4

PORT 5

PORT 6

PORT 7

Refer to www.level1.com for most current information.

)

LXT9761HC Related Products

	LXT9761HC	LXT9781HC	LXT9781BC
Description	Ethernet Transceiver, 6-Trnsvr, PQFP208, PLASTIC, QFP-208	Ethernet Transceiver, 8-Trnsvr, PQFP208, PLASTIC, QFP-208	Ethernet Transceiver, 8-Trnsvr, PBGA272, PLASTIC, BGA-272
Is it Rohs certified?	incompatible	incompatible	incompatible
Maker	Level One	Level One	Level One
Parts packaging code	QFP	QFP	BGA
package instruction	QFP, QFP208,1.2SQ,20	QFP, QFP208,1.2SQ,20	BGA, BGA272,20X20,50
Contacts	208	208	272
Reach Compliance Code	unknown	unknown	unknown
data rate	100000 Mbps	100000 Mbps	100000 Mbps
JESD-30 code	S-PQFP-G208	S-PQFP-G208	S-PBGA-N272
JESD-609 code	e0	e0	e0
Number of functions	1	1	1
Number of terminals	208	208	272
Transceiver quantity	6	8	8
Maximum operating temperature	70 °C	70 °C	70 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	QFP	QFP	BGA
Encapsulate equivalent code	QFP208,1.2SQ,20	QFP208,1.2SQ,20	BGA272,20X20,50
Package shape	SQUARE	SQUARE	SQUARE
Package form	FLATPACK	FLATPACK	GRID ARRAY
power supply	3.3 V	3.3 V	3.3 V
Certification status	Not Qualified	Not Qualified	Not Qualified
Maximum slew rate	0.828 mA	1.1 mA	1.1 mA
Nominal supply voltage	3.3 V	3.3 V	3.3 V
surface mount	YES	YES	YES
Telecom integrated circuit types	ETHERNET TRANSCEIVER	ETHERNET TRANSCEIVER	ETHERNET TRANSCEIVER
Temperature level	COMMERCIAL	COMMERCIAL	COMMERCIAL
Terminal surface	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)
Terminal form	GULL WING	GULL WING	NO LEAD
Terminal pitch	0.5 mm	0.5 mm	1.27 mm
Terminal location	QUAD	QUAD	BOTTOM
Base Number Matches	1	1	1

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