SNLS397D October   2011  – April 2015 DS110DF410

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Typical Application Diagram
  5. 5 Revision History
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Device Data Path Operation
      2. 8.3.2 Signal Detect
      3. 8.3.3 CTLE
      4. 8.3.4 DFE
      5. 8.3.5 Clock and Data Recovery
      6. 8.3.6 Output Driver
      7. 8.3.7 Device Configuration
        1. 8.3.7.1 Rate and Subrate Setting
    4. 8.4 Device Functional Modes
      1. 8.4.1 SMBus Master Mode and SMBus Slave Mode
      2. 8.4.2 Address Lines <ADDR_[3:0]>
      3. 8.4.3 SDA and SDC
      4. 8.4.4 Standards-Based Modes
        1. 8.4.4.1 Ref_mode 3 Mode (Reference Clock Required)
        2. 8.4.4.2 False Lock Detector Setting
        3. 8.4.4.3 Reference Clock In
        4. 8.4.4.4 Reference Clock Out
        5. 8.4.4.5 Driver Output Voltage
        6. 8.4.4.6 Driver Output De-Emphasis
        7. 8.4.4.7 Driver Output Rise/Fall Time
        8. 8.4.4.8 INT
        9. 8.4.4.9 LOCK_3, LOCK_2, LOCK_1, and LOCK_0
    5. 8.5 Programming
      1. 8.5.1  SMBus Strap Observation
      2. 8.5.2  Device Revision and Device ID
      3. 8.5.3  Control/Shared Register Reset
      4. 8.5.4  Interrupt Channel Flag Bits
      5. 8.5.5  SMBus Master Mode Control Bits
      6. 8.5.6  Resetting Individual Channels of the Retimer
      7. 8.5.7  Interrupt Status
      8. 8.5.8  Overriding the CTLE Boost Setting
      9. 8.5.9  Overriding the VCO Search Values
      10. 8.5.10 Overriding the Output Multiplexer
      11. 8.5.11 Overriding the VCO Divider Selection
      12. 8.5.12 Using the PRBS Generator
      13. 8.5.13 Using the Internal Eye Opening Monitor
      14. 8.5.14 Overriding the DFE Tap Weights and Polarities
      15. 8.5.15 Enabling Slow Rise/Fall Time on the Output Driver
      16. 8.5.16 Inverting the Output Polarity
      17. 8.5.17 Overriding the Figure of Merit for Adaptation
      18. 8.5.18 Setting the Rate and Subrate for Lock Acquisition
      19. 8.5.19 Setting the Adaptation/Lock Mode
      20. 8.5.20 Initiating Adaptation
      21. 8.5.21 Setting the Reference Enable Mode
      22. 8.5.22 Overriding the CTLE Settings Used for CTLE Adaptation
      23. 8.5.23 Setting the Output Differential Voltage
      24. 8.5.24 Setting the Output De-Emphasis Setting
    6. 8.6 Register Maps
      1. 8.6.1 Register Information
      2. 8.6.2 Bit Fields in the Register Set
      3. 8.6.3 Writing to and Reading from the Control/Shared Registers
      4. 8.6.4 Channel Select Register
      5. 8.6.5 Reading to and Writing from the Channel Registers
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Each Channel Independently Locks to Data Rates from 8.5 to 11.3 Gbps and Sub-rates
  • Support for Subrates of Divide by 2/4/8
  • Fast Lock Operation Based on Protocol-Select Mode
  • Low Latency (~300ps)
  • 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 to 85°C
  • WQFN 48-Pin 7-mm × 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
  • Fibre-Channel, InfiniBand
  • Other Propriety Data Rates up to 11.3 Gbps

3 Description

The DS110DF410 is a four channel retimer with integrated signal conditioning. The device includes a fully adaptive Continuous-Time Linear Equalizer (CTLE), self calibrating 5-tap Decision Feedback Equalizer (DFE), Clock and Data Recovery (CDR), and transmit De-Emphasis (DE) driver to enable data transmission over long, lossy and crosstalk-impaired highspeed serial links to achieve BER < 1×10-15.

Each channel can independently lock to data rates from 8.5 to 11.3 Gbps, and associated sub rates (div by 2, 4 and 8) to support a variety of communication protocols. A 25-MHz crystal oscillator clock is used to speed up the CDR lock process. This clock is not used for training the PLL and does not need to be synchronous with the serial data.

The programmable settings can be applied 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.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
DS110DF410 WQFN (48) 7.00 mm x 7.00 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

4 Typical Application Diagram

DS110DF410 30177080.gif