LXT901ALC datasheet, PDF - EEWORLD Datasheet

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LXT901ALC: DescriptionEthernet Transceiver, 1-Trnsvr, PQFP64, LQFP-64; CategoryWireless rf/communication Telecom circuit; File Size496KB，46 Pages; ManufacturerCortina Systems Inc

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LXT901ALC Overview

Ethernet Transceiver, 1-Trnsvr, PQFP64, LQFP-64

LXT901ALC Parametric

Parameter Name	Attribute value
Maker	Cortina Systems Inc
Parts packaging code	QFP
package instruction	LFQFP, QFP64,.47SQ,20
Contacts	64
Reach Compliance Code	compliant
data rate	20000 Mbps
JESD-30 code	S-PQFP-G64
length	10 mm
Number of functions	1
Number of terminals	64
Transceiver quantity	1
Maximum operating temperature	70 °C
Minimum operating temperature
Package body material	PLASTIC/EPOXY
encapsulated code	LFQFP
Encapsulate equivalent code	QFP64,.47SQ,20
Package shape	SQUARE
Package form	FLATPACK, LOW PROFILE, FINE PITCH
power supply	3.3 V
Certification status	Not Qualified
Maximum seat height	1.6 mm
Maximum slew rate	0.12 mA
Nominal supply voltage	3.3 V
surface mount	YES
Telecom integrated circuit types	ETHERNET TRANSCEIVER
Temperature level	COMMERCIAL
Terminal form	GULL WING
Terminal pitch	0.5 mm
Terminal location	QUAD
width	10 mm

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Cortina Systems

LXT901A and LXT907A

PHY Transceivers

Datasheet: Long Form

The Cortina Systems

LXT901A and LXT907A PHY Transceivers(LXT901A/907A PHY) are new

generation Universal Ethernet Transceivers with improved noise immunity and output filtering. The

feature set of the LXT901A/907A PHY has been streamlined, removing Remote Signaling capabilities.

The LXT901A/907A PHY provide all the active circuitry to interface most standard 802.3 controllers to

either the 10BASE-T media or Attachment Unit Interface (AUI).

The LXT901A PHY and LXT907A PHY are identical except for the function of one pin. The

LXT901A PHY, with selectable termination impedance allows the use of either shielded or unshielded

twisted-pair cable. The LXT907A PHY offers a Signal Quality Error disable (DSQE) function.

LXT901A/907A PHY functions include Manchester encoding/decoding, receiver squelch and transmit

pulse shaping, jabber, link testing and reversed polarity detection/correction.

Applications

10BASE-T hub and switching products

Computer/workstation 10BASE-T LAN adapter

boards

Features

Functional Features

Integrated Filters - Simplify FCC Compliance

Integrated Manchester Encoder/Decoder

10BASE-T Transceiver

AUI Transceiver

Full-Duplex Capable (20 Mbps)

Convenience Features

Automatic/Manual AUI/RJ-45 Selection

Automatic Polarity Correction

SQE Disable function (LXT907A PHY)

Programmable Impedance Driver

(LXT901A PHY)

Single 3.3V operation

Power Down Mode and four loopback modes

Available in 64-pin LQFP and 44-pin PLCC

packages

Commercial (0 to +70

Diagnostic Features

Four LED Drivers

AUI/RJ-45 Loopback

249098, Revision 4.0

LXT901A/907A PHY

Datasheet: Long Form

249098, Revision 4.0

03 December 2007

Contents

1.0

2.0

Pin Assignments and Signal Descriptions ................................................................................. 4

Functional Description.................................................................................................................. 8

2.1

2.2

2.3

2.4

Controller Compatibility Modes ............................................................................................. 8

Transmit Function ................................................................................................................. 9

2.2.1 Jabber Control Function .......................................................................................... 9

2.2.2 SQE Function ........................................................................................................10

Receive Function ................................................................................................................11

2.3.1 Polarity Reverse Function......................................................................................11

2.3.2 Collision Detection Function ..................................................................................12

Loopback Functions............................................................................................................13

2.4.1 Standard TP Loopback ..........................................................................................13

2.4.2 Forced TP Loopback .............................................................................................13

2.4.3 AUI Loopback ........................................................................................................13

2.4.4 External Loopback .................................................................................................13

Link Integrity Test Function.................................................................................................13

Link Pulse Transmission ..................................................................................................... 15

Twisted-Pair Impedance Matching .....................................................................................16

Crystal Information..............................................................................................................16

Magnetics Information ........................................................................................................16

Typical Applications ............................................................................................................16

3.4.1 Auto Port Select with External Loopback Control ..................................................16

3.4.2 Full-Duplex Support ...............................................................................................19

3.4.3 Dual Network Support - 10Base-T and Token Ring...............................................20

3.4.4 Manual Port Select with Link Test Function...........................................................21

3.4.5 Three Media Application ........................................................................................23

3.4.6 AUI Encoder/Decoder Only ...................................................................................23

3.4.7 150 Ohm Shielded Twisted-pair only (LXT901A PHY only)...................................25

Timing Diagrams for Mode 1

(MD1 = Low, MD0 = Low)

Figure 17

through

Figure 22

.....................................................30

Timing Diagrams for Mode 2

(MD1=Low, MD0=High)

Figure 23

through

Figure 28

........................................................32

Timing Diagrams for Mode 3

(MD1 = High, MD0 = Low)

Figure 29

through

Figure 36

....................................................34

Timing Diagrams for Mode 4

(MD1 = High, MD0 = High)

Figure 37

through

Figure 42....................................................37

2.5

2.6

3.0

3.1

3.2

3.3

3.4

Application Information ..............................................................................................................16

4.0

Test Specifications......................................................................................................................26

4.1

4.2

4.3

4.4

5.0

Mechanical Specifications ..........................................................................................................40

Cortina Systems

LXT901A and LXT907A PHY Transceivers

Page 1

LXT901A/907A PHY

Datasheet: Long Form

249098, Revision 4.0

03 December 2007

Figures

LXT901A/907A PHY Block Diagram ............................................................................................... 3

LXT901A/907A PHY Pin Assignments ............................................................................................ 4

TPO Output Waveform ................................................................................................................... 9

Jabber Control Function ...............................................................................................................10

SQE Function ...............................................................................................................................11

Collision Detection Function .........................................................................................................12

Link Integrity Test Function ..........................................................................................................14

Transmitted Link Integrity Pulse Timing .......................................................................................15

LAN Adapter Board - Auto Port Select with External LPBK Control .............................................18

Full-Duplex Operation ...................................................................................................................19

380C26 Interface for Dual Network Support of 10BASE-T and Token Ring ................................20

LAN Adapter Board - Manual Port Select with Link Test Function ................................................21

Manual Port Select with Seeq* 8005 Controller ...........................................................................22

Three Media Application ...............................................................................................................23

AUI Encoder/Decoder Only Application ........................................................................................ 24

150 Ohm Shielded Twisted-Pair Only Application (LXT901A PHY) .............................................25

Mode 1 RCLK/Start-of-Frame Timing ........................................................................................... 30

Mode 1 RCLK/End-of-Frame Timing ............................................................................................30

Mode 1 Transmit Timing ...............................................................................................................31

Mode 1 Collision Detect Timing ....................................................................................................31

Mode 1 COL/CI Output Timing .....................................................................................................31

Mode 1 Loopback Timing .............................................................................................................32

Mode 2 RCLK/Start-of-Frame Timing ........................................................................................... 32

Mode 2 RCLK/End-of-Frame Timing ............................................................................................33

Mode 2 Transmit Timing ...............................................................................................................33

Mode 2 Collision Detect Timing ....................................................................................................33

Mode 2 COL/CI Output Timing .....................................................................................................34

Mode 2 Loopback Timing .............................................................................................................34

Mode 3 RCLK/Start-of-Frame Timing (LXT901A PHY) ................................................................34

Mode 3 RCLK/End-of-Frame Timing (LXT901A PHY) .................................................................35

Mode 3 RCLK/Start-of-Frame Timing (LXT907A PHY) ................................................................35

Mode 3 RCLK/End-of-Frame Timing (LXT907A PHY) .................................................................36

Mode 3 Transmit Timing ...............................................................................................................36

Mode 3 Collision Detect Timing .....................................................................................................36

Mode 3 COL/CI Output Timing .....................................................................................................37

Mode 3 Loopback Timing .............................................................................................................37

Mode 4 RCLK/Start-of-Frame Timing ............................................................................................ 37

Mode 4 RCLK/End-of-Frame Timing ............................................................................................38

Mode 4 Transmit Timing ...............................................................................................................38

Mode 4 Collision Detect Timing ....................................................................................................39

Mode 4 COL/CI Output Timing .....................................................................................................39

Mode 4 Loopback Timing .............................................................................................................39

44-Pin PLCC..................................................................................................................................40

64-Pin LQFP .................................................................................................................................41

Cortina Systems

LXT901A and LXT907A PHY Transceivers

Page 1

LXT901ALC Related Products

	LXT901ALC	LXT907APC	LXT907ALC	LXT901APC
Description	Ethernet Transceiver, 1-Trnsvr, PQFP64, LQFP-64	Ethernet Transceiver, 1-Trnsvr, PQCC44, PLASTIC, LCC-44	Ethernet Transceiver, 1-Trnsvr, PQFP64, LQFP-64	Ethernet Transceiver, 1-Trnsvr, PQCC44, PLASTIC, LCC-44
Parts packaging code	QFP	LCC	QFP	LCC
package instruction	LFQFP, QFP64,.47SQ,20	QCCJ, LDCC44,.7SQ	LFQFP, QFP64,.47SQ,20	QCCJ, LDCC44,.7SQ
Contacts	64	44	64	44
Reach Compliance Code	compliant	compliant	compliant	compliant
data rate	20000 Mbps	20000 Mbps	20000 Mbps	20000 Mbps
JESD-30 code	S-PQFP-G64	S-PQCC-J44	S-PQFP-G64	S-PQCC-J44
length	10 mm	16.5862 mm	10 mm	16.5862 mm
Number of functions	1	1	1	1
Number of terminals	64	44	64	44
Transceiver quantity	1	1	1	1
Maximum operating temperature	70 °C	70 °C	70 °C	70 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	LFQFP	QCCJ	LFQFP	QCCJ
Encapsulate equivalent code	QFP64,.47SQ,20	LDCC44,.7SQ	QFP64,.47SQ,20	LDCC44,.7SQ
Package shape	SQUARE	SQUARE	SQUARE	SQUARE
Package form	FLATPACK, LOW PROFILE, FINE PITCH	CHIP CARRIER	FLATPACK, LOW PROFILE, FINE PITCH	CHIP CARRIER
power supply	3.3 V	3.3 V	3.3 V	3.3 V
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	1.6 mm	4.57 mm	1.6 mm	4.57 mm
Maximum slew rate	0.12 mA	0.12 mA	0.12 mA	0.12 mA
Nominal supply voltage	3.3 V	3.3 V	3.3 V	3.3 V
surface mount	YES	YES	YES	YES
Telecom integrated circuit types	ETHERNET TRANSCEIVER	ETHERNET TRANSCEIVER	ETHERNET TRANSCEIVER	ETHERNET TRANSCEIVER
Temperature level	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL
Terminal form	GULL WING	J BEND	GULL WING	J BEND
Terminal pitch	0.5 mm	1.27 mm	0.5 mm	1.27 mm
Terminal location	QUAD	QUAD	QUAD	QUAD
width	10 mm	16.5862 mm	10 mm	16.5862 mm

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