DP83847 datasheet(3/60 Pages) NSC

Part #	DP83847

Description	DsPHYTER II ??Single 10/100 Ethernet Transceiver

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Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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Table of Content

1.0

Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1

MII Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2

10 Mb/s and 100 Mb/s PMD Interface . . . . . . . . . . 6

1.3

Clock Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.4

Special Connections . . . . . . . . . . . . . . . . . . . . . . . 7

1.5

LED Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.6

Strapping Options/Dual Purpose Pins . . . . . . . . . . 8

1.7

Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.8

Power and Ground Pin . . . . . . . . . . . . . . . . . . . . . 9

1.9

Package Pin Assignments . . . . . . . . . . . . . . . . . . 10

2.0

Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.1

Auto-Negotiation . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.2

PHY Address and LEDs . . . . . . . . . . . . . . . . . . . 12

2.3

LED INTERFACES . . . . . . . . . . . . . . . . . . . . . . . 13

2.4

Half Duplex vs. Full Duplex . . . . . . . . . . . . . . . . . 13

2.5

MII Isolate Mode . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.6

Loopback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.7

BIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.0

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.1

802.3u MII . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.2

100BASE-TX TRANSMITTER . . . . . . . . . . . . . . . 16

3.3

100BASE-TX RECEIVER . . . . . . . . . . . . . . . . . . 20

3.4

10BASE-T TRANSCEIVER MODULE . . . . . . . . . 23

3.5

TPI Network Circuit . . . . . . . . . . . . . . . . . . . . . . . 24

3.6

ESD Protection . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.7

Crystal Oscillator Circuit . . . . . . . . . . . . . . . . . . . 26

3.8

Reference Bypass Couple . . . . . . . . . . . . . . . . . . 26

4.0

Reset Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.1

Hardware Reset . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.2

Software Reset . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.0

Register Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.1

Register Definition . . . . . . . . . . . . . . . . . . . . . . . . 29

5.2

Extended Registers . . . . . . . . . . . . . . . . . . . . . . . 37

6.0

Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . 44

6.1

Reset Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

6.2

PGM Clock Timing

. . . . . . . . . . . . . . . . . . . . . . . 47

6.3

MII Serial Management Timing . . . . . . . . . . . . . . 47

6.4

100 Mb/s Timing . . . . . . . . . . . . . . . . . . . . . . . . . 48

6.5

10 Mb/s Timing . . . . . . . . . . . . . . . . . . . . . . . . . . 52

6.6

Loopback Timing . . . . . . . . . . . . . . . . . . . . . . . . . 57

6.7

Isolation Timing . . . . . . . . . . . . . . . . . . . . . . . . . . 59

7.0

Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . 60

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