VITESSE

SEMICONDUCTOR CORPORATION

Preliminary Datasheet

VSC6424

500 Mb/s Video

Shift Register IC

G52236-0, Rev 3.0

© VITESSE SEMICONDUCTOR CORPORATION

Page 1

7/13/99

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

Features

General Description

The VSC6424 is a 500Mb/s video shift register IC that is based on a 40-bit user-configured shift register.

The shift register may be used either as a multiplexer (parallel in, serial out) or as a demultiplexer (serial in, par-

allel out). The VSC6424 can be configured into 8 5-bit, 8 4-bit, 5 8-bit, 4 10-bit, 2 16-bit, 2 20-bit, 1 32-bit, or 1

40-bit shift register.

VSC6424 Functional Block Diagram

• Multiplex or Demultiplex Operation

• Selectable Shift Register Length

• 500Mb/s Operation using internal timing

• 250Mb/s Operation using external timing

• Functional Replacement for Bt424

• External ECL Reference Voltage (-1.32 V)

• ECL and TTL I/Os: ECL for high-speed interface,

TTL for low-speed interface

• Power Supplies: +3.3V and -2V @ 2.7 Watts (Max.)

• Package: 14mm x 20mm 128 PQFP

40-bit

INT/EXTN

MODE

Clock

Generator

Shift

Register

40

S<0:2>

High

Speed

Interface

SP<0:2>

A<0:4>

SLDN/SYNC

SB<0:39>

40

10

40

OPS

CLK

LLDN

Phase

Rotation

HBLANK

VBLANK

SEN/DIVC

AEN/RETIME

SIN

OEN

DE-

MUX

MUX

(TTL)

Input

Latch

3

5

3

8

10

DIN<0:9>

CLKOUT

DOUT<0:7>

(ECL)

Low

Speed

Interface

(TTL)

(ECL)

(ECL)