SY87813L datasheet(6/35 Pages) MICREL

Part #	SY87813L

Description	3-Port 10/100 Integrated Switch with PHY and Frame Buffer

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Manufacturer	MICREL [Micrel Semiconductor]

Direct Link	http://www.micrel.com

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6 / 35 page

KS8993

Micrel

KS8993

6

April 2009

Pin Description

Pin Number

Pin Name

Type(Note 1)

Port

Pin Function

1

GND_ANA

GND

Analog ground

2

MUX[2]

I

Factory test pin

3

MUX[1]

I

Factory test pin

4

GND_RX[1]

GND

1

Ground for receiver

5

RXP[1]

I

1

Physical receive signal + (differential)

6

RXM[1]

I

1

Physical receive signal - (differential)

7

VDD_RX[1]

Pwr

1

2.5V for receiver

8

VREF[1]

O

1

Reference voltage for transmit transformer center tap

9

TXP[1]

O

1

Physical transmit signal + (differential)

10

TXM[1]

O

1

Physical transmit signal - (differential)

11

GND_TX[1]

GND

1

Ground for transmit circuitry

12

VDD_TX[1]

Pwr

1

2.5V for transmit circuitry

13

VDD_BG

Pwr

2.5V for analog circuitry

14

ISET

O

Set physical transmit output current

15

GND_BG

GND

Ground for analog circuitry

16

GND_PLL

GND

Ground for phase locked loop circuitry

17

VDD_PLL

Pwr

2.5V for phase locked loop circuitry

18

GND_RX[2]

GND

2

Ground for receiver

19

RXP[2]

I

2

Physical receive signal + (differential)

20

RXM[2]

I

2

Physical receive signal - (differential)

21

VDD_RX[2]

Pwr

2

2.5V for receiver

22

VREF[2]

O

2

Reference voltage for transmit transformer center tap

23

TXP[2]

O

2

Physical transmit signal + (differential)

24

TXM[2]

O

2

Physical transmit signal - (differential)

25

GND_TX[2]

GND

2

Ground for transmit circuitry

26

VDD_TX[2]

Pwr

2

2.5V for transmit circuitry

27

VDD_TX[3]

Pwr

3

2.5V for transmit circuitry

28

GND_TX[3]

GND

3

Ground for transmit circuitry

29

TXP[3]

O

3

Physical transmit signal + (differential)

30

TXM[3]

O

3

Physical transmit signal - (differential)

31

VREF[3]

O

3

Reference voltage for transmit transformer center tap

32

VDD_RX[3]

Pwr

3

2.5V for receiver

33

RXP[3]

I

3

Physical receive signal + (differential)

34

RXM[3]

I

3

Physical receive signal - (differential)

35

GND_RX[3]

GND

3

Ground for receiver

36

FXSD[2]

I

2

Fiber signal detect

37

FXSD[3]

I

3

Fiber signal detect

38

GND_ANA

GND

Analog ground

Note 1.

Pwr = power supply

GND = ground

I = input

O = output

I/O = bi-directional

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SY87813L Datasheet(PDF) 6 Page - Micrel Semiconductor

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