TQ8025 데이터 시트보기 (PDF) - TriQuint Semiconductor

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TQ8025

2.5 Gigabit/sec 16x16 Digital Crosspoint Switch

TriQuint Semiconductor 

TRIQUINT

S E M I C O N D U C T O R, I N C .

32

DIØ–15

(differential)

PECL/CML

Input

Buffers

16 x 16

Crosspoint

Switch Matrix

PECL/CML

Output

Buffers

32

DOØ–15

(differential)

RESET–

LDMODE

CONFIG

16 x 4

Configuration

Latches

READY

TQ8025

PRELIMINARY DATA SHEET

2.5 Gigabit/sec

16x16 Digital

Crosspoint Switch

ADD15

ADDØ

LOAD

CLOCK

ADDREN

AUTOCONFIG

TQ8025

4-Bit Shift

Register

4-Bit Shift

Register

Address Generator

and Control

+5V

GND

RADDØ

RADD1

The TQ8025 is a non-blocking 16 x 16 digital crosspoint switch capable of

data rates greater than 2.5 gigabits per second per port. With a fully

differential internal data path and PECL/CML I/O, the TQ8025 offers an

extremely high data rate with exceptional signal fidelity. The use of fully

differential logic results in low crosstalk, jitter, and signal skew. The

TQ8025 is ideally suited for digital video, data communications,

telecommunication switching, and cross-connect applications.

The non-blocking architecture uses 16 fully independent 16:1 multiplexers

which allow each output port to be independently programmed to any input

port. The TQ8025 offers two programming options: a flexible port-by-port

option, and a fast configuration option.

Features

• 16 PECL/CML fully differential

(back-terminated) outputs

• >2.5 Gb/s data bandwidth

per channel

• >40 Gb/s aggregate bandwidth

• Non-blocking architecture

• 80 ns configuration time

• Autonomous control of external

RAM for configuration data

• Low jitter and signal skew

• ±100 ps delay match (one input

to all outputs)

• Fully differential data path

• 132-pin MLC package with

heat spreader

Using the fast configuration option, all 16 switch ports are programmed

within 80ns by serially loading four 16-bit input port selection words. Two

output pins (RADD0,1) are provided to drive an external RAM

(n x 4 x 16 bits) used to store the switch configuration. An Autoconfigure

option automatically transfers the new configurations into the switch core.

Autoconfiguration occurs after the last input selection word is clocked into

the programming registers.

Data integrity is maintained on all unchanged data paths for both the port-

by-port and fast configuration options.

Applications

• SONET OC-48 data path

• Double-speed Fibre Channel

• Hubs and routers

• High-definition video switching

• Parallel processing

For additional information and latest specifications, see our website: www.triquint.com

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