SMSC DS – TMC2005

Page 13

Rev. 10/24/2000

APPLICATION NOTES

Example 1: A five ports HUB with HYC2485s in backplane mode.

FIGURE 1 - APPLICATION EXAMPLE 1

Only the TMC2005 and five transceivers are indicated in the above figure. Connect the other pins adequately.

Example 2: A five ports HUB with HYC9088s and a optical transceiver(TODX270A) links the two physical layers;

dipulse and fiber optics.

+5V

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

HYC2485S

1

2

3

4

5

6

7

8

Vref

VCC

nRXIN

PH_B

PH_A

GND

nTXEN

nPULSE1

HYC2485S

1

2

3

4

5

6

7

8

Vref

VCC

nRXIN

PH_B

PH_A

GND

nTXEN

nPULSE1

HYC2485S

1

2

3

4

5

6

7

8

Vref

VCC

nRXIN

PH_B

PH_A

GND

nTXEN

nPULSE1

HYC2485S

1

2

3

4

5

6

7

8

Vref

VCC

nRXIN

PH_B

PH_A

GND

nTXEN

nPULSE1

HYC2485S

1

2

3

4

5

6

7

8

Vref

VCC

nRXIN

PH_B

PH_A

GND

nTXEN

nPULSE1