DS125BR401 Repeater Datasheet

DS125BR401 Datasheet, PDF, Equivalent


Part Number

DS125BR401

Description

4-Lane Repeater

Manufacture

etcTI

Total Page 30 Pages
Datasheet
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DS125BR401
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DS125BR401
SNLS419D – JULY 2012 – REVISED MAY 2015
DS125BR401 Low-Power, 12.5-Gbps, 4-Lane Repeater With Input Equalization
and Output De-Emphasis
1 Features
1 Comprehensive Family, Proven System
Interoperability
– DS125BR111: 1-Lane Repeater
– DS125BR401: 4-Lane Repeater
– DS125BR800: 8-Channel Repeater
– DS125MB203: 2-Port 2:1/1:2 Mux/Switch
– DS125DF410: 4-Channel Unidirectional
Retimer With CDR
• Low 65-mW/Channel (Typical) Power
Consumption, With Option to Power Down
Unused Channels
• Nonlimiting Output for PCIe and 10G-KR Link
Training Support
• Advanced Signal Conditioning Features
– Receive Equalization up to 30 dB at 6.25 GHz
– Transmit De-Emphasis up to –12 dB
– Transmit Output Voltage Control: 700 mV to
1300 mV
• Programmable Through Pin Selection, EEPROM,
or SMBus Interface
• Single Supply Voltage: 2.5 V or 3.3 V (Selectable)
40°C to 85°C Operating Temperature Range
• 5-kV HBM ESD Rating
• Flow-Thru Pinout in 10-mm × 5.5-mm 54-Pin
Leadless WQFN Package
• Supported Protocols
– sRIO, Infiniband, Interlaken, CPRI, OBSAI
– Other Proprietary Interface up to 12.5 Gbps
2 Applications
• SAS/SATA (up to 6 Gbps), Fibre Channel (up to
10 GFC)
• PCIe Gen-3/2/1, 10G-KR, 10GbE, XAUI, RXAUI
3 Description
The DS125BR401 device is an extremely low-power
high-performance multiprotocol repeater and redriver
designed to support four lanes of PCIe Gen-3/2/1,
10G-KR, and other high-speed interface serial
protocols up to 12.5 Gbps. The continuous time linear
equalizer (CTLE) of the receiver provides a boost of
up to 30 dB at 6.25 GHz (12.5 Gbps) in each of its
eight channels and can open an input eye that is
completely closed due to intersymbol interference
(ISI) induced by interconnect medium such as
backplane traces of 30 inches or more or copper
cables of 8 meters or more, hence enabling host
controllers to ensure an error-free end-to-end link.
The transmitter provides a de-emphasis boost of up
to –12 dB and output voltage amplitude control from
700 mV to 1300 mV to allow maximum flexibility in
the physical placement within the interconnect
channel.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DS125BR401
WQFN (54)
10.00 mm × 5.50 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Typical Application
4
TX
Connector
RX
4
DS125BR401
System Board
Root Complex
4
RX
Connector
4
TX
DS125BR401
BoTarardce
ASIC
or
PCIe EP
1
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.

DS125BR401
DS125BR401
SNLS419D – JULY 2012 – REVISED MAY 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Typical Application ................................................ 1
5 Revision History..................................................... 2
6 Description (continued)......................................... 3
7 Pin Configuration and Functions ......................... 3
8 Specifications......................................................... 5
8.1 Absolute Maximum Ratings ...................................... 5
8.2 ESD Ratings.............................................................. 6
8.3 Recommended Operating Conditions....................... 6
8.4 Thermal Information .................................................. 6
8.5 Electrical Characteristics........................................... 6
8.6 Electrical Characteristics — Serial Management Bus
Interface .................................................................... 9
8.7 Typical Characteristics ............................................ 11
9 Detailed Description ............................................ 12
9.1 Overview ................................................................. 12
9.2 Functional Block Diagram ....................................... 12
9.3 Feature Description................................................. 12
9.4 Device Functional Modes........................................ 13
9.5 Programming........................................................... 13
9.6 Register Maps ......................................................... 25
10 Application and Implementation........................ 39
10.1 Application Information.......................................... 39
10.2 Typical Application ............................................... 39
11 Power Supply Recommendations ..................... 43
11.1 3.3-V or 2.5-V Supply Mode Operation................. 43
11.2 Power Supply Bypassing ...................................... 43
12 Layout................................................................... 44
12.1 Layout Guidelines ................................................. 44
12.2 Layout Example .................................................... 44
13 Device and Documentation Support ................. 45
13.1 Documentation Support ........................................ 45
13.2 Community Resources.......................................... 45
13.3 Trademarks ........................................................... 45
13.4 Electrostatic Discharge Caution ............................ 45
13.5 Glossary ................................................................ 45
14 Mechanical, Packaging, and Orderable
Information ........................................................... 45
5 Revision History
Changes from Revision C (April 2013) to Revision D
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section .................................................................................................. 1
2 Submit Documentation Feedback
Copyright © 2012–2015, Texas Instruments Incorporated
Product Folder Links: DS125BR401


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community DS125BR401 SNLS419D – JULY 2012 – REVISED MAY 2015 DS125BR401 L ow-Power, 12.5-Gbps, 4-Lane Repeater Wi th Input Equalization and Output De-Emp hasis 1 Features •1 Comprehensive Fa mily, Proven System Interoperability DS125BR111: 1-Lane Repeater – DS125 BR401: 4-Lane Repeater – DS125BR800: 8-Channel Repeater – DS125MB203: 2-Po rt 2:1/1:2 Mux/Switch – DS125DF410: 4 -Channel Unidirectional Retimer With CD R • Low 65-mW/Channel (Typical) Power Consumption, With Option to Power Down Unused Channels • Nonlimiting Output for PCIe and 10G-KR Link Training Supp ort • Advanced Signal Conditioning Fe atures – Receive Equalization up to 3 0 dB at 6.25 GHz – Transmit De-Emphas is up to –12 dB – Transmit Output V oltage Control: 700 mV to 1300 mV • P rogrammable Through Pin Selection, EEPR OM, or SMBus Interface • Single Suppl y Voltage: 2.5 V or 3.3 V (Selectable) • −40°C to 85°C Operating Temperature Range • 5-kV HBM ESD.
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