31-Oct-2005

Datasheet

4

Order Number: 248989, Revision: 003

Figures

1

Block Diagram .............................................................................................................................. 7

2

Pin Assignments ........................................................................................................................... 8

3

Global State Machine ................................................................................................................. 17

4

Partitioning State Machine.......................................................................................................... 18

5

Integrated LED Driver Indications............................................................................................... 26

6

12-Port Application Schematic, 68-Pin PLCC Package (Sheet 1 of 4)....................................... 29

7

12-Port Application Schematic, 68-Pin PLCC Package (Sheet 2 of 4)....................................... 30

8

12-Port Application Schematic, 68-Pin PLCC Package (Sheet 3 of 4)....................................... 31

9

12-Port Application Schematic, 68-Pin PLCC Package (Sheet 4 of 4)....................................... 32

10

8-Port Application Schematic, LED Mode 1 with AUISEL = MAU (Sheet 1 of 2) ....................... 33

11

8-Port Application Schematic, LED Mode 1 with AUISEL = MAU (Sheet 2 of 2) ....................... 34

12

Serial Port Timing ....................................................................................................................... 38

13

Inter-Repeater Bus Timing ......................................................................................................... 39

14

LXT914PC/PE Package Specifications ...................................................................................... 40

15

LXT914QC Package Specifications ........................................................................................... 41

16

Sample PLCC Package - Intel

17

Sample Pb-Free (RoHS-Compliant) PLCC Package - Intel

18

Sample PQFP Package - Intel

® LXT914 Repeater ....................................................................43

19

Sample Pb-Free (RoHS-Compliant) PQFP Package - Intel

® LXT914 Repeater ........................ 43

20

Ordering Information Matrix – Sample........................................................................................ 45

Tables

1

Power, Ground, and Clock Signal Descriptions............................................................................ 9

2

Inter-Repeater Backplane Signal Descriptions ........................................................................... 10

3

Mode Select and Control Signal Descriptions ............................................................................ 10

4

Serial Port Signal Descriptions (External Management Mode) .................................................. 11

5

Serial Port Signal Descriptions (Local Management Mode) ....................................................... 11

6

Miscellaneous Control Signal Descriptions ................................................................................ 12

7

LED Driver Signal Descriptions .................................................................................................. 12

8

Repeater Port Signal Descriptions ............................................................................................. 13

9

Setup Register Bit Assignments .................................................................................................19

10

Setup Register Bit Definitions ..................................................................................................... 19

11

Packet Status Register Bit Assignments .................................................................................... 20

12

Packet Status Register Bit Definitions ........................................................................................20

13

AUI Mode Selection (DTE/MAU) ................................................................................................ 22

14

LED Mode Selection ................................................................................................................... 24

15

Mode 0 (Default) LED Truth Table ............................................................................................. 24

16

Mode 1 LED Truth Table ............................................................................................................ 24

17

Mode 2 LED Truth Table ............................................................................................................ 25

18

Mode 3 LED Truth Table ............................................................................................................ 25

19

Manufacturers Magnetics List..................................................................................................... 28

20

Absolute Maximum Ratings ........................................................................................................ 35

21

Recommended Operating Conditions ........................................................................................ 35

22

23

AUI Electrical Characteristics ..................................................................................................... 36

24

Twisted-Pair Electrical Characteristics .......................................................................................36

25

IRB Electrical Characteristics ..................................................................................................... 37