DS125BR800 Repeater Datasheet

DS125BR800 Datasheet, PDF, Equivalent


Part Number

DS125BR800

Description

Low-Power 12.5-Gbps 8-Channel Repeater

Manufacture

etcTI

Total Page 30 Pages
Datasheet
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DS125BR800
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DS125BR800
SNLS426F – AUGUST 2012 – REVISED NOVEMBER 2018
DS125BR800 Low-Power 12.5-Gbps 8-Channel Repeater With Input Equalization and
Output De-Emphasis
1 Features
1 Comprehensive Family, Proven System Inter-
Operability
– DS125BR111: One-Lane Repeater
– DS125BR401: Four-Lane Repeater
– DS125BR800: Eight-Channel Repeater
– DS125MB203: Two-Port 2:1/1:2 Mux/Switch
– DS125DF410: Four-Channel Retimer With
CDR
• Low 65-mW/Channel (Typical) Power
Consumption, With Option to Power Down
Unused Channels
• "Non-Limiting" 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
• 3-kV HBM ESD Rating
• Flow-Thru Pinout: 54-Pin WQFN (10-mm × 5.5-
mm, 0.5-mm Pitch)
• 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
10GFC)
• PCIe Gen-3/2/1, 10G-KR, 10GbE, XAUI, RXAUI
3 Description
The DS125BR800 device is an extremely low-power
high-performance multiprotocol repeater/redriver
designed to support eight channels 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 30in+
backplane traces or 8m+ copper cables, 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)
DS125BR800
WQFN (54)
10.00 mm × 5.50 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application
System Board
Root Complex
8
TX
Connector
RX
8
DS125BR800
8
RX
DS125BR800
Connector
8
TX
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.

DS125BR800
DS125BR800
SNLS426F – AUGUST 2012 – REVISED NOVEMBER 2018
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Description (cont.) ................................................. 3
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 6
7.1 Absolute Maximum Ratings ...................................... 6
7.2 ESD Ratings.............................................................. 6
7.3 Recommended Operating Conditions....................... 6
7.4 Thermal Information .................................................. 6
7.5 Electrical Characteristics........................................... 7
7.6 Electrical Characteristics: Serial Management Bus
Interface .................................................................... 9
7.7 Timing Requirements ................................................ 9
7.8 Typical Characteristics ............................................ 11
8 Detailed Description ............................................ 12
8.1 Overview ................................................................. 12
8.2 Functional Block Diagram ....................................... 12
8.3 Feature Description................................................. 12
8.4 Device Functional Modes........................................ 15
8.5 Programming........................................................... 15
8.6 Register Maps ......................................................... 25
9 Application and Implementation ........................ 44
9.1 Application Information............................................ 44
9.2 Typical Application ................................................. 44
10 Power Supply Recommendations ..................... 48
10.1 3.3-V or 2.5-V Supply Mode Operation................. 48
10.2 Power Supply Bypassing ...................................... 49
11 Layout................................................................... 49
11.1 Layout Guidelines ................................................. 49
11.2 Layout Example .................................................... 50
12 Device and Documentation Support ................. 51
12.1 Documentation Support ........................................ 51
12.2 Receiving Notification of Documentation Updates 51
12.3 Trademarks ........................................................... 51
12.4 Electrostatic Discharge Caution ............................ 51
12.5 Glossary ................................................................ 51
13 Mechanical, Packaging, and Orderable
Information ........................................................... 51
4 Revision History
Changes from Revision E (January 2015) to Revision F
Page
• Changed 1/3 x VDD and 2/3 x VDD to 1/3 x VIN and 2/3 x VIN in the 3.3-V MODE column of the 4-Level Input Voltage
table ..................................................................................................................................................................................... 12
• Changed VIN - 0.04 V to VDD - 0.04 V in the 2.5-V MODE column of the 4-Level Input Voltage table ............................... 12
• Added Receiving Notification of Documentation Updates section ...................................................................................... 51
Changes from Revision D (March 2013) to Revision E
Page
• Added Pin Configuration and Functions section, 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
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Copyright © 2012–2018, Texas Instruments Incorporated
Product Folder Links: DS125BR800


Features Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity DS125BR800 SNLS426F – AUGUST 2012 – REVISED NOVEMBER 2018 DS125BR8 00 Low-Power 12.5-Gbps 8-Channel Repeat er With Input Equalization and Output D e-Emphasis 1 Features •1 Comprehensi ve Family, Proven System InterOperabili ty – DS125BR111: One-Lane Repeater DS125BR401: Four-Lane Repeater – DS 125BR800: Eight-Channel Repeater – DS 125MB203: Two-Port 2:1/1:2 Mux/Switch DS125DF410: Four-Channel Retimer Wit h CDR • Low 65-mW/Channel (Typical) P ower Consumption, With Option to Power Down Unused Channels • "Non-Limiting" Output for PCIe and 10G-KR Link Traini ng Support • Advanced Signal Conditio ning Features – Receive Equalization up to 30 dB at 6.25 GHz – Transmit De -Emphasis up to –12 dB – Transmit O utput Voltage Control: 700 mV to 1300 m V • Programmable Through Pin Selectio n, EEPROM, or SMBus Interface • Singl e Supply Voltage: 2.5 V or 3.3 V (Selectable) • −40°C to 85°C Operating Temperature Range • 3-kV .
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