SMSC DS – TMC2005

Page 16

Rev. 10/24/2000

Example 4: An on-board type HUB with a COM20020 and four optical transceivers in backplane mode.

FIGURE 4 - APPLICATION EXAMPLE 4

Only the TMC2005 and four transceivers with the COM20020 are indicated in the above figure. Connect the other

pins adequately.

+5V

TODX270A

1

2

3

4

5

6

7

8

OUT

GND1

VCC1

GND2

GND3

LEDR

VCC2

IN

TODX270A

1

2

3

4

5

6

7

8

OUT

GND1

VCC1

GND2

GND3

LEDR

VCC2

IN

TODX270A

1

2

3

4

5

6

7

8

OUT

GND1

VCC1

GND2

GND3

LEDR

VCC2

IN

TODX270A

1

2

3

4

5

6

7

8

OUT

GND1

VCC1

GND2

GND3

LEDR

VCC2

IN

TMC2005

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

RXFLT

nPLLTST

VDD2

XTLI

XTLO

VSS4

VDD4

VDD3

AVDD

RO

LP

AGS

AVSS

VSS3

VSS5

RXINA0

SA

TXENA0

LA

RXINA1

MA

TXENA1

VDD6

VSS8

RXINB0

SB

TXENB0

LB

RXINB1

MB

COM20020

15

18

17

nPULSE1

nTXEN

RXIN

1

2

3