SNLS399B January   2012  – January 2015

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Device Data Path Operation
      2. 7.3.2  Signal Detect
      3. 7.3.3  CTLE
      4. 7.3.4  DFE
      5. 7.3.5  Clock and Data Recovery
      6. 7.3.6  Output Driver
      7. 7.3.7  CTLE Boost Setting
      8. 7.3.8  DFE Tap Weight and Polarity Setting
      9. 7.3.9  Driver Output Voltage
      10. 7.3.10 Driver Output De-Emphasis
      11. 7.3.11 Driver Output Rise/Fall Time
      12. 7.3.12 Ref_mode 0 Mode (Reference Clock Not Required)
      13. 7.3.13 Ref_mode 3 Mode (Reference Clock Required)
      14. 7.3.14 False Lock Detector Setting
      15. 7.3.15 Reference Clock In
      16. 7.3.16 Reference Clock Out
      17. 7.3.17 Daisy Chain of REFCLK_OUT to REFCLK_IN
      18. 7.3.18 INT
      19. 7.3.19 LOCK_3, LOCK_2, LOCK_1, and LOCK_0
    4. 7.4 Device Functional Modes
      1. 7.4.1 SMBus Master Mode and SMBus Slave Mode
      2. 7.4.2 Address Lines <ADDR_[3:0]>
      3. 7.4.3 SDA and SDC
    5. 7.5 Programming
      1. 7.5.1  SMBus Strap Observation
      2. 7.5.2  Device Revision and Device ID
      3. 7.5.3  Control/Shared Register Reset
      4. 7.5.4  Interrupt Channel Flag Bits
      5. 7.5.5  SMBus Master Mode Control Bits
      6. 7.5.6  Resetting Individual Channels of the Retimer
      7. 7.5.7  Interrupt Status
      8. 7.5.8  Overriding the CTLE Boost Setting
      9. 7.5.9  Overriding the VCO CAP DAC Values
      10. 7.5.10 Overriding the Output Multiplexer
      11. 7.5.11 Overriding the VCO Divider Selection
      12. 7.5.12 Using the PRBS Generator
      13. 7.5.13 Using the Internal Eye Opening Monitor
      14. 7.5.14 Overriding the DFE Tap Weights and Polarities
      15. 7.5.15 Enabling Slow Rise/Fall Time on the Output Driver
      16. 7.5.16 Inverting the Output Polarity
      17. 7.5.17 Overriding the Figure of Merit for Adaptation
      18. 7.5.18 Setting the Rate and Subrate for Lock Acquisition
      19. 7.5.19 Setting the Adaptation/Lock Mode
      20. 7.5.20 Initiating Adaptation
      21. 7.5.21 Setting the Reference Enable Mode
      22. 7.5.22 Overriding the CTLE Settings Used for CTLE Adaptation
      23. 7.5.23 Setting the Output Differential Voltage
      24. 7.5.24 Setting the Output De-emphasis Setting
    6. 7.6 Register Maps
      1. 7.6.1 Register Information
      2. 7.6.2 Bit Fields in the Register Set
      3. 7.6.3 Writing to and Reading from the Control/Shared Registers
      4. 7.6.4 Channel Select Register
      5. 7.6.5 Reading to and Writing from the Channel Registers
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Trademarks
    2. 11.2 Electrostatic Discharge Caution
    3. 11.3 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

1 Features

  • Each Channel Independently Locks to 10.3125 Gbps
  • Lock Operation (typically under 15 ms)
  • Low Latency (~300 ps)
  • Adaptive Equalization up to 34 dB Boost at 5 GHz
  • Adjustable Transmit VOD: 600 to 1300 mVp-p
  • Adjustable Transmit De-emphasis to –12 dB
  • Typical Power Dissipation (EQ+DFE+CDR+DE): 180 mW/channel
  • Programmable Output Polarity Inversion
  • Input Signal Detection, CDR Lock Detection/Indicator
  • On-chip Eye Monitor (EOM), PRBS Generator
  • Single 2.5 V ±5% Power Supply
  • SMBus/EEPROM Configuration Modes
  • Operating Temperature Range of –40°C to 85°C
  • WQFN 48-Pin, 7 mm x 7 mm Package
  • Easy Pin Compatible Upgrade Between Repeater and Retimers
    • DS100RT410 (EQ+CDR+DE): 10.3125 Gbps
    • DS100DF410 (EQ+DFE+CDR+DE): 10.3125 Gbps
    • DS110RT410 (EQ+CDR+DE): 8.5–11.3 Gbps
    • DS110DF410 (EQ+DFE+CDR+DE): 8.5–11.3 Gbps
    • DS125RT410 (EQ+CDR+DE): 9.8–12.5 Gbps
    • DS125DF410 (EQ+DFE+CDR+DE): 9.8–12.5 Gbps
    • DS100BR410 (EQ+DE): Up to 10.3125 Gbps

2 Applications

  • Front Port SFF 8431 (SFP+) Optical and Direct Attach Copper
  • Backplane Reach Extension, Data Retimer
  • Ethernet: 10GbE, 1GbE

    • For other data rates and data transmission protocols, other pin-compatible devices in the retimer family can be used.

3 Description

The DS100DF410 is four channel retimers with integrated signal conditioning. Each channel can independently lock to 10.3125 Gbps data rate to support 10GbE. The device includes a fully adaptive Continuous-Time Linear Equalizer (CTLE), Clock and Data Recovery (CDR) and transmit De-Emphasis (DE) driver. The DS100DF410 also includes a self calibrating 5-tap Decision Feedback Equalizer (DFE) to enable data transmission over long, lossy and crosstalk-impaired highspeed serial links to achieve BER < 1×10-15.

The programmable settings can be applied easily using the SMBus (I2C) interface, or they can be loaded via an external EEPROM. An on-chip eye monitor and a PRBS generator allow real-time measurement of high-speed serial data for system bring-up or field tuning. Flow-through pinout and single power supply make the DS100DF410 easy to use.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
DS100DF410SQ WQFN (48) 7.00 mm × 7.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application Diagram

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4 Revision History

Changes from A Revision (February 2013) to B Revision

  • Changed 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 sectionGo