VSC8117QP2 查看數據表（PDF） - Vitesse Semiconductor

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VSC8117QP2

ATM/SONET/SDH 622/155 Mb/s Transceiver Mux/Demux with Integrated Clock Generation and Clock Recovery

Vitesse Semiconductor 

VITESSE

SEMICONDUCTOR CORPORATION

ATM/SONET/SDH 622/155 Mb/s Transceiver Mux/Demux

with Integrated Clock Generation and Clock Recovery

Data Sheet

VSC8117

Table 15: Pin Identification

Signal

Pin

I/O

LOSPECL

33

I

VDD

34

VSS

35

REFCLK

36

I

VSSA

37

VDDA

38

CP1

39

CN1

40

CN2

41

CP2

42

VDDA

43

VSSA

44

VSS

45

VSS

46

VDD

47

VDD

48

TXLSCKOUT

49

O

TXIN7

50

I

TXIN6

51

I

VSS

52

TXIN5

53

I

TXIN4

54

I

TXIN3

55

I

TXIN2

56

I

TXIN1

57

I

TXIN0

58

I

STS12

59

I

CRUREFSEL

60

I

VDD

61

EQULOOP

62

I

FACLOOP

CRUEQLP

63

I

64

I

Level

PECL

+3.3V

GND

TTL

GND

+3.3V

Analog

Analog

Analog

Analog

+3.3V

GND

GND

GND

+3.3V

+3.3V

TTL

TTL

TTL

GND

TTL

TTL

TTL

TTL

TTL

TTL

TTL

TTL

+3.3V

TTL

TTL

TTL

Pin Description

Loss of Signal Control- Single ended PECL input; active low

+3.3V Power Supply

Ground

Reference clock input, refer to table 10

Analog Ground (CMU)

Analog Power Supply (CMU)

CMU external capacitor (see Figure 6, and Table 1)

CMU external capacitor (see Figure 6, and Table 1)

CMU external capacitor (see Figure 6, and Table 1)

CMU external capacitor (see Figure 6, and Table 1)

Analog Power Supply (CRU)

Analog Ground (CRU)

Ground

Ground

+3.3V Power Supply

+3.3V Power Supply

Transmit byte clock out

Transmit input data bit7

Transmit input data bit6

Ground

Transmit input data bit5

Transmit input data bit4

Transmit input data bit3

Transmit input data bit2

Transmit input data bit1

Transmit input data bit0

155Mb/s or 622Mb/s mode select, refer to table 10

Selects between CMU’s or CRU’s REFCLK

+3.3V Power Supply

Equipment loopback, loops low speed byte wide transmit

input data to receive output bus

Facility loopback, loops high speed receive data and clock

directly to transmit outputs.

Loops TXDATAOUT to the CRU replacing RXDATAIN+/-

Page 16

© VITESSE SEMICONDUCTOR CORPORATION

741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896

G52221-0, Rev 4.1

1/8/00

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