KS8993 查看數據表（PDF） - Micrel

零件编号

产品描述 (功能)

生产厂家

KS8993

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

Micrel 

KS8993

Pin Description

Pin Number Pin Name

1

GND_ANA

2

MUX[2]

3

MUX[1]

4

GND_RX[1]

5

RXP[1]

6

RXM[1]

7

VDD_RX[1]

8

VREF[1]

9

TXP[1]

10

TXM[1]

11

GND_TX[1]

12

VDD_TX[1]

13

VDD_BG

14

ISET

15

GND_BG

16

GND_PLL

17

VDD_PLL

18

GND_RX[2]

19

RXP[2]

20

RXM[2]

21

VDD_RX[2]

22

VREF[2]

23

TXP[2]

24

TXM[2]

25

GND_TX[2]

26

VDD_TX[2]

27

VDD_TX[3]

28

GND_TX[3]

29

TXP[3]

30

TXM[3]

31

VREF[3]

32

VDD_RX[3]

33

RXP[3]

34

RXM[3]

35

GND_RX[3]

36

FXSD[2]

37

FXSD[3]

38

GND_ANA

Note 1.

Pwr = power supply

GND = ground

I = input

O = output

I/O = bi-directional

Type(Note 1)

GND

I

I

GND

I

I

Pwr

O

O

O

GND

Pwr

Pwr

O

GND

GND

Pwr

GND

I

I

Pwr

O

O

O

GND

Pwr

Pwr

GND

O

O

O

Pwr

I

I

GND

I

I

GND

Port

1

1

1

1

1

1

1

1

1

2

2

2

2

2

2

2

2

2

3

3

3

3

3

3

3

3

3

2

3

KS8993

Pin Function

Analog ground

Factory test pin

Factory test pin

Ground for receiver

Physical receive signal + (differential)

Physical receive signal - (differential)

2.5V for receiver

Reference voltage for transmit transformer center tap

Physical transmit signal + (differential)

Physical transmit signal - (differential)

Ground for transmit circuitry

2.5V for transmit circuitry

2.5V for analog circuitry

Set physical transmit output current

Ground for analog circuitry

Ground for phase locked loop circuitry

2.5V for phase locked loop circuitry

Ground for receiver

Physical receive signal + (differential)

Physical receive signal - (differential)

2.5V for receiver

Reference voltage for transmit transformer center tap

Physical transmit signal + (differential)

Physical transmit signal - (differential)

Ground for transmit circuitry

2.5V for transmit circuitry

2.5V for transmit circuitry

Ground for transmit circuitry

Physical transmit signal + (differential)

Physical transmit signal - (differential)

Reference voltage for transmit transformer center tap

2.5V for receiver

Physical receive signal + (differential)

Physical receive signal - (differential)

Ground for receiver

Fiber signal detect

Fiber signal detect

Analog ground

6

Micrel

May 2005

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