MAX4890 Просмотр технического описания (PDF) - Maxim Integrated

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MAX4890

(MAX4890 - MAX48920 10/100/1000 Base-T Ethernet LAN Switch

Maxim Integrated 

10/100/1000 Base-T Ethernet LAN Switch

Pin Description

PIN

MAX4890 MAX4891 MAX4892

31, 32, 1, 2, 31, 32, 1, 2, 36, 1, 2, 3,

7–10

7–10

7–10

—

3

4

—

4

5

—

5

6

3–6, 12

6, 12

—

11

11

11

—

—

12

—

—

13

—

—

14

13, 14, 17, 13, 14, 17, 15, 16, 19,

18, 21, 22, 18, 21, 22, 20, 23, 24,

25, 26

25, 26

28, 29

NAME

A0–A7

LED0

0LED1

0LED2

N.C.

GND

LED1

1LED1

1LED2

7B2–0B2

FUNCTION

Differential PHY Interface Pair. Connects to the Ethernet PHY.

LED0 Input

0LED1 Output. Connects LED0 to 0LED1 when SEL = 0.

0LED2 Output. Connects LED0 to 0LED2 when SEL = 1.

No Connection. Not internally connected.

Ground

LED1 Input

1LED1 Output. Connects LED1 to 1LED1 when SEL = 0.

1LED2 Output. Connects LED1 to 1LED2 when SEL = 1.

B2 Differential Transformer Pair

15, 16, 19, 15, 16, 19, 17, 18, 21,

20, 23, 24, 20, 23, 24, 22, 25, 26,

27, 28

27, 28

30, 31

29

29

27

—

—

32

—

—

33

—

—

34

30

30

35

—

—

—

7B1–0B1

SEL

2LED2

2LED1

LED2

V+

EP

B1 Differential Transformer Pair

Select Input. Selects switch connection. See the Truth Table (Table 1).

2LED2 Output. Connects LED2 to 2LED2 when SEL = 1.

2LED1 Output. Connects LED2 to 2LED1 when SEL = 0.

LED2 Input

Positive Supply-Voltage Input

Exposed Paddle. Not internally connected. Leave EP unconnected or connect

to ground.

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