VSC851FX 查看數據表（PDF） - Vitesse Semiconductor

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VSC851FX

1.6 Gb/s 32 X 32 Crosspoint Switch

Vitesse Semiconductor 

VITESSE

SEMICONDUCTOR CORPORATION

Data Sheet

VSC851

1.6 Gb/s 32 X 32

Crosspoint Switch

AC Characteristics (Over recommended operating conditions. ECL Output load 50Ω to VTT.)

Table 1: Data Flow Mode.

Parameters

TPW

TDLY

Tduty

Tskew

Tpskew

Description

Minimum input pulse width

Propagation delay

Duty cycle distortion

Output to output skew

Data path skew

Min Typ Max Units

Conditions

640 — —

600 — 2000

— — 150

— — 250

— — 500

pS Worst case 60/40 input duty cycle

pS —

pS at 1.6 Gb/s Note(1)

pS On a given part broadcast mode

pS

For any 2 paths from I+/I- to Z+/Z- on

a given part

(1) Duty cycle distortion = duty cycle out - duty cycle in (pS). With 8B/10B encoded data.

AC Timing Waveforms

Figure 1: Normal Data Flow Timing

I+ [0:31]

I-[0:31]

Z+ [0:31]

Z-[0:31]

Minimum Input Pulse Width & Propagation Delay

TPW

TDLY

TDLY

TSKEW

TSKEW

G52167-0 Rev. 4.1

10/21/99

© VITESSE SEMICONDUCTOR CORPORATION

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

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