DP83924 datasheet(3/42 Pages) NSC

3 / 42 page

www.national.com

Table of Contents

1.0

Pin Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

1.1

Pin Connection Diagram . . . . . . . . . . . . . . . . . . . . 4

1.2

Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . .5

2.0

Interface Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . .9

2.1

Management Interface . . . . . . . . . . . . . . . . . . . . . .9

2.2

MAC Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

2.3

LED Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

2.4

Network Interface . . . . . . . . . . . . . . . . . . . . . . . . .10

3.0

Detailed Functional Description . . . . . . . . . . . . . . . . .14

3.1

Twisted Pair Functional Description . . . . . . . . . . 14

3.2

ENDEC Module . . . . . . . . . . . . . . . . . . . . . . . . . .15

3.3

Additional Features . . . . . . . . . . . . . . . . . . . . . . .15

3.4

Auto-negotiation Block . . . . . . . . . . . . . . . . . . . . .17

3.5

JTAG Boundary Scan . . . . . . . . . . . . . . . . . . . . .18

4.0

4.1

5.0

Application Information . . . . . . . . . . . . . . . . . . . . . . . .27

5.1

Magnetics Specifications . . . . . . . . . . . . . . . . . . .27

5.2

Layout Considerations . . . . . . . . . . . . . . . . . . . . .27

5.3

LED interface considerations . . . . . . . . . . . . . . . .28

6.0

User Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

6.1

CRS Assertion Connected to a 100M Node . . . . 29

6.2

Link Fail Inhibit Timer . . . . . . . . . . . . . . . . . . . . . .29

6.3

Lockup during duplex mode change: . . . . . . . . . . 29

6.4

Start of TP_IDL, 45 Bit Times to 50 mV: . . . . . . . 29

6.5

Polarity detection: . . . . . . . . . . . . . . . . . . . . . . . .29

6.6

Link pulse template: . . . . . . . . . . . . . . . . . . . . . . .30

7.0

AC and DC Electrical Specifications . . . . . . . . . . . . .31

7.1

DC Specifications . . . . . . . . . . . . . . . . . . . . . . . .31

7.2

AC Switching Specifications . . . . . . . . . . . . . . . .32

8.0

Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . .42

DP83924 Datasheet(PDF) 3 Page - National Semiconductor (TI)

DP83924 Datasheet(HTML) 3 Page - National Semiconductor (TI)

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