PI2EQX3431 datasheet(1/5 Pages) PERICOM

Part #	PI2EQX3431

Description	3.2Gbps, 1-port, SATA2/SAS Re-Driver

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Manufacturer	PERICOM [Pericom Semiconductor Corporation]

Direct Link	http://www.pericom.com

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1

PS8950A

04/30/08

Features

• Two 3.2Gbps differential signal pairs

• Adjustable Receiver Equalization

• 100-Ohm Differential CML I/O’s

• Independent Output Level Control

• Input signal level detect and squelch for each channel

• OOB Support

• Low Power (100mW per Channel)

• Stand-by Mode – Power Down State

• VCC Operating Range: 1.8V ±0.1V

• Packaging: — 20-TQFN (3.5x 4.5mm)

Description

Pericom Semiconductor’s PI2EQX3431 is a low power, signal

Re-Driver. The device provides programmable equalization,

to optimize performance over a variety of physical mediums

by reducing Inter-Symbol Interference. PI2EQX3431 supports

two 100-Ohm Differential CML data I/O’s between the Protocol

ASIC to a switch fabric, across a backplane, or to extend the

signals across other distant data pathways on the user’s platform.

The integrated equalization circuitry provides ﬂexibility with

signal integrity of the signal before the re-driver.

A low-level input signal detection and output squelch function

is provided for each channel. Each channel operates fully

independantly. When the channels are enabled (CE=1) and

operating, that channels input signal level (on xIN+/-) determines

whether the output is active. If the input signal level of the channel

falls below the active threshold level (Vth-) then the outputs are

driven to the common mode voltage.

In addition to signal conditioning, when CE = 0, the device

enters a low power standby mode.

Block Diagram

PI2EQX3431

3.2Gbps, 1-port, SATA2/SAS Re-Driver

Pin Description (Top Side View)

2

3

4

5

6

7

8

9

19

18

17

16

15

14

13

12

10 11

120

F_SD

VDD

F_IN+

F_IN-

VDD

R_OUT+

R_OUT-

R_SD

CE

VDD

F_OUT+

F_OUT-

VDD

R_IN+

R_IN-

NC

GND

x_IN+

CML

Limiting

Amp

Equalizer

Signal Detection

x_EQ

Power

Management

CE

x_SD

S_ES

- Repeated 2 times -

x_IN –

x_OUT+

x_OUT–

08-0094

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