VSC830QZ 查看數據表（PDF） - Vitesse Semiconductor

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VSC830QZ

Dual 2x2 Crosspoint Switch 2.7Gb/s Asynchronous

Vitesse Semiconductor 

Data Sheet

VSC830

VITESSE

SEMICONDUCTOR CORPORATION

2.7Gb/s Asynchronous

Dual 2x2 Crosspoint Switch

Functional Description

Select

As shown in Figure 1, each output can be treated as a 2:1 multiplexer, with the A1 and A2 inputs common

to both multiplexers. The select input S1 independently controls the state of the multiplexer that drives output

Y1, and select input S2 independently controls the output of Y2.

Figure 1: Select Functional Block Diagram

S1

S2

A1

Y1

Y2

A2

Table 1 specifies the function of the select inputs.

Table 1: Select Function

S1

S2

Y1

Y2

0

0

A1

A1

1

0

A2

A1

0

1

A1

A2

1

1

A2

A2

MODE

The interface level of the select pins, S1 and S2, can be programmed to either TTL or PECL levels by short-

ing the MODE pin to either VCC or VEE. Note that the MODE pin must be tied to either VCC or VEE. The func-

tion of MODE is specified in Table 2.

Table 2: MODE Function

MODE

VEE

VCC

S1, S2

TTL

PECL

G52192-0, Rev 4.0

05/23/01

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Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com

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