VSC8124RE 查看數據表（PDF） - Vitesse Semiconductor

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VSC8124RE

2.488 Gb/s Quad Data Re-timer

Vitesse Semiconductor 

VITESSE

SEMICONDUCTOR CORPORATION

Target Specification

VSC8124

2.488 Gb/s Quad

Data Re-timer

Typical Application

This table lists the suggested connections for non-data path pins for a typical 2.5 Gb/s application which

does not use the fast locking, channel re-timer bypassing, or loss of signal alarm masking. Users of those fea-

tures should take care to understand the functions before connecting to the control pins.

Table 12: Recommended Pin Usage

Pin Number

2

29

30

42

43

44

45

46

47

53

54

55

56

57

60

62

64

66

68

70

71

72

73

78

79

80

81

82

83

84

96

97

99

Pin Name

REV

CKBYP

TEST30

VTT

RTBYP0

RTBYP1

RTBYP2

RTBYP3

TEST47

TEST53

TEST54

TEST55

TEST56

TEST57

REFSEL

REFCK0-

REFCK0+

REFCK1-

REFCK1+

MASK0

MASK1

MASK2

MASK3

TRITTL

LOSALMN

LOS0N

LOS1N

LOS2N

LOS3N

VTT

LOSCLR

FASTLOCK

3VS

Recommended Hook-up

Do not connect

Do not connect

Do not connect

Internally generated power supply; Do not connect

Re-timer bypass; Do not connect

Re-timer bypass; Do not connect

Re-timer bypass; Do not connect

Re-timer bypass; Do not connect

Do not connect

Do not connect

Do not connect

Do not connect

Do not connect

Do not connect

Reference clock select; to use REFCK0, do not connect

Reference clock 0-; Connect your reference clock true here

Reference clock 0+; Connect your reference clock complement here

Reference clock 1-; 1k Ohm to Vee

Reference clock 1+; Do not connect

Mask alarm; Do not connect

Mask alarm; Do not connect

Mask alarm; Do not connect

Mask alarm; Do not connect

Tri-state TTL outputs; Do not connect

Loss of signal alarm; if used, 1k Ohm to Vcc otherwise do not connect

Loss of signal channel 0; connect to CMOS input

Loss of signal channel 0; connect to CMOS input

Loss of signal channel 0; connect to CMOS input

Loss of signal channel 0; connect to CMOS input

Internally generated power supply; Do not connect

Loss of signal clear; CMOS input (3.3V max.)

Enable fast lock; Do not connect

Power supply sense; Vcc or do not connect

G52271-0, Rev. 1.14

2/23/00

© VITESSE SEMICONDUCTOR CORPORATION

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

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