Texas Instruments DS160PR421 Bedienungsanleitung

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DS160PR421 PCIe® 4.0 16 Gbps 4-channel Linear Redriver with Integrated 2:1 Mux

1 Features

•Quad channel PCIe 4.0 linear redriver or repeater

with integrated 2:1 multiplexer

•Protocol agnostic linear redriver compatible to UPI,

DisplayPort, SAS, SATA, XFI

•Single 3.3 V supply rail

•Low 120 mW /channel active power

•No heat sink required

•Provides equalization up to 17 dB at 8 GHz to

handle up to 42 dB of PCIe 4.0 channels

•Excellent differential return loss of -13 dB input and

-15 dB output

•Low additive random jitter of 70 fs with PRBS data

•Low latency of 80 ps

•Automatic receiver detection and seamless

support for PCIe link training

•Device configuration by pin control or SMBus / I

2

C.

•Mux selection through pin

•Available companion demultiplexer product

DS160PR412

•-40°C to 85°C industrial temperature range

•3.5 mm x 9 mm 42 Pin 0.5 mm pitch WQFN

package

2 Applications

•Desktop PC/motherboard

•Rack server

•Microserver & tower server

•High performance computing

•Hardware accelerator

•Network attached storage

•Storage area network (SAN) & host bus adapter

(HBA) card

•Network interface card (NIC)

3 Description

The DS160PR421 is four channel linear redrivers with

integrated multiplexer (mux). The low-power high-

performance linear redriver is designed to support

PCIe 4.0 and other interfaces.

The DS160PR421 receivers deploy continuous time

linear equalizers (CTLE) to provide a high-frequency

boost. The equalizer can open an input eye that is

completely closed due to inter-symbol interference

(ISI) induced by an interconnect medium, such as

PCB traces and cables. The linear redriver along with

the passive channel as a whole get link trained for

best transmit and receive equalization settings

resulting in best electrical link and lowest possible

latency. Low channel-channel cross-talk, low additive

jitter and excellent return loss allows the device to

become almost a passive element in the link. The

devices has internal linear voltage regulator to provide

clean power supply for high speed data paths that

provides high immunity to any supply noise on the

board.

The DS160PR421 implements high speed testing

during production for reliable high volume

manufacturing. The device also has low AC and DC

gain variation providing consistent equalization in high

volume platform deployment.

Device Information

(1)

PART NUMBERPACKAGEBODY SIZE (NOM)

DS160PR421WQFN (42)3.5 mm x 9 mm

(1)For all available packages, see the orderable addendum at

the end of the data sheet.

Connector-B

CPU

Connector-A

x8

Slot

x8

x16

Slot

x8

TXA 8-ch

PCIe Card

PCIe Card

TXB 8-ch

RXB 8-ch

RXA 8-ch

RX 8-ch

TX 8-ch

x8

DS160PR412

4 Ch 1:2 De-mux

DS160PR421

4 Ch 2:1 Mux

PCIe Lane MuxingDe-multiplexer

DS160PR412

Redriver Demux

RX 1RX 2

TX

4-Ch

4-Ch

4-Ch

Multiplexer

DS160PR421

Redriver Mux

RX

TX 1

4-Ch

4-Ch

TX 2

4-Ch

Application Use Case

www.ti.com

DS160PR421

SNLS686 – FEBRUARY 2021

Copyright ©2021 Texas Instruments Incorporated

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DS160PR421

SNLS686 – FEBRUARY 2021

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Produktspezifikationen