ds80pci102sqx National Semiconductor Corporation, ds80pci102sqx Datasheet

ds80pci102sqx

Manufacturer Part Number

ds80pci102sqx

Description

2.5 Gbps / 5.0 Gbps / 8.0 Gbps 1-lane Pci Express Repeater With Equalization And De-emphasis

Manufacturer

National Semiconductor Corporation

Datasheet

1.DS80PCI102SQX.pdf (4 pages)

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2.5 Gbps / 5.0 Gbps / 8.0 Gbps 1-Lane PCI Express

Repeater with Equalization and De-Emphasis

General Description

The DS80PCI102 is a low power, 1 lane repeater with 4-stage

input equalization, and output de-emphasis driver to enhance

the reach of PCI express serial links in board-to-board or ca-

ble interconnects. Ideal for x1 PCI express configuration, the

DS80PCI102 automatically detects and adapts to Gen-1,

Gen-2 and Gen-3 data rates for easy system upgrade. Each

channel supports seamless detection and management of the

new Gen-3 transmit equalizer coefficients (FIR tap) hand-

shake protocol and PCIe control signals such as transmit idle,

beacon etc. without external system intervention. An auto-

matic receive detection circuitry controls the input termination

impedance based upon endpoint insertion (hot-plug events).

These features guarantee PCIe interoperability at both the

electrical and system level, while reducing design complexity.

offers programmable transmit de-emphasis (up to 12 dB),

transmit VoD (up to 1300 mVp-p) and receive equalization (up

to 36 dB) to enable longer distance transmission in lossy cop-

per cables (10m+), or backplanes (40”+) with multiple con-

nectors. The receiver is capable of opening an input eye that

is completely closed due to inter-symbol interference (ISI) in-

troduced by the interconnect medium.

The programmable settings can be applied easily via pins,

software (SMBus/I2C) or loaded via an external EEPROM.

When operating in the EEPROM mode, the configuration in-

formation is automatically loaded on power up, which elimi-

nates the need for an external microprocessor or software

driver.

Typical Application

301569

DS80PCI102

Notice: This document is not a full datasheet. For more

information regarding this product or to order samples

please contact your local National Semiconductor sales

office or visit http://www.national.com/support/dir.html

Features

■

Comprehensive family, proven system interoperability

DS80PCI102: x1 PCIe Gen-1/2/3

DS80PCI402: x4 PCIe Gen-1/2/3

DS80PCI800: x8/x16 PCIe Gen-1/2/3

Automatic rate detect and adaption to Gen-1/2/3 speeds

Seamless support for Gen-3 transmit FIR handshake

Rate adaptive receive EQ (up to 36 dB), transmit de-

emphasis (up to 12 dB) only Gen-1/2

Adjustable Transmit VOD: 0.7 to 1.3Vp-p (pin mode)

0.2 UI of residual deterministic jitter at 8Gbps after 40” of

FR4 or 10m 30awg PCIe cable

Low power dissipation with ability to turnoff unused

channels: 65mW/channel

Automatic receiver detect (hot-plug)

Multiple configuration modes: Pins/SMBus/Direct

EEPROM load

Single supply voltage: 2.5V or 3.3V (selectable)

Flow-thru pinout in 4mmx4mm 24-pin leadless LLP

package

>4kV HBM ESD rating

-10 to 85°C operating temperature range

30156990

PRELIMINARY

April 26, 2011

www.national.com

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ds80pci102sqx Summary of contents

Page 1

... Typical Application © 2011 National Semiconductor Corporation DS80PCI102 Notice: This document is not a full datasheet. For more information regarding this product or to order samples please contact your local National Semiconductor sales office or visit http://www ...

Page 2

... Ordering Information NSID Qty DS80PCI102SQX Tape & Reel Supplied As 4,500 Units DS80PCI102SQ Tape & Reel Supplied As 1,000 Units DS80PCI102SQE Tape & Reel Supplied As 250 Units www.national.com Spec NOPB NOPB NOPB 2 Package SQA24A SQA24A SQA24A ...

Page 3

... Physical Dimensions inches (millimeters) unless otherwise noted Order Number DS80PCI102SQX (Tape and Reel 4500 units) Order Number DS80PCI102SQ (Tape and Reel 1000 units) Order Number DS80PCI102SQE (Tape and Reel 250 units) NS Package Number SQA24A (See AN-1187 for PCB Design and Assembly Recommendations) 3 www ...

Page 4

... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...

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