SNLS325D May   2010  – December 2016 DS92LV0421 , DS92LV0422

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: Serializer DC
    6. 6.6  Electrical Characteristics: Deserializer DC
    7. 6.7  Electrical Characteristics: DC and AC Serial Control Bus
    8. 6.8  Timing Requirements: Serial Control Bus
    9. 6.9  Switching Characteristics: Serializer
    10. 6.10 Switching Characteristics: Deserializer
    11. 6.11 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1 Parallel LVDS Data Transfer (Color Bit Mapping Select)
      2. 7.3.2 Serial Data Transfer
      3. 7.3.3 Video Control Signal Filter
      4. 7.3.4 Serializer Functional Description
        1. 7.3.4.1 Signal Quality Enhancers
          1. 7.3.4.1.1 Serializer VOD Select (VODSEL)
          2. 7.3.4.1.2 Serializer De-Emphasis (DE-EMPH)
        2. 7.3.4.2 EMI Reduction Features
          1. 7.3.4.2.1 Data Randomization and Scrambling
          2. 7.3.4.2.2 Serializer Spread Spectrum Compatibility
        3. 7.3.4.3 Power-Saving Features
          1. 7.3.4.3.1 Serializer Power-Down Feature (PDB)
          2. 7.3.4.3.2 Serializer Stop Clock Feature
          3. 7.3.4.3.3 Serializer 1.8-V or 3.3-V VDDIO Operation
      5. 7.3.5 Deserializer Functional Description
        1. 7.3.5.1 Signal Quality Enhancers
          1. 7.3.5.1.1 Deserializer Input Equalizer Gain (EQ)
        2. 7.3.5.2 EMI Reduction Features
          1. 7.3.5.2.1 Deserializer VOD Select (VODSEL)
          2. 7.3.5.2.2 Deserializer Common-Mode Filter Pin (CMF) (Optional)
          3. 7.3.5.2.3 Deserializer SSCG Generation (Optional)
          4. 7.3.5.2.4 Power-Saving Features
            1. 7.3.5.2.4.1 Deserializer Power-Down Feature (PDB)
            2. 7.3.5.2.4.2 Deserializer Stop Stream SLEEP Feature
            3. 7.3.5.2.4.3 Deserializer 1.8-V or 3.3-V VDDIO Operation
        3. 7.3.5.3 Deserializer Clock-Data Recovery Status Flag (LOCK), Output Enable (OEN), and Output State Select (OSS_SEL)
        4. 7.3.5.4 Deserializer Oscillator Output (Optional)
      6. 7.3.6 Built-In Self Test (BIST)
        1. 7.3.6.1 Sample BIST Sequence
        2. 7.3.6.2 BER Calculations
      7. 7.3.7 Optional Serial Bus Control
    4. 7.4 Device Functional Modes
      1. 7.4.1 Serializer and Deserializer Operating Modes and Reverse Compatibility (CONFIG[1:0])
    5. 7.5 Register Maps
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Display Application
      2. 8.1.2 Live Link Insertion
      3. 8.1.3 Alternate Color or Data Mapping
    2. 8.2 Typical Application
      1. 8.2.1 DS92LV0421 Typical Connection
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 DS92LV0422 Typical Application
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 WQFN (LLP) Stencil Guidelines
      2. 10.1.2 Transmission Media
      3. 10.1.3 LVDS Interconnect Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
      2. 11.1.2 Development Support
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Related Links
    4. 11.4 Receiving Notification of Documentation Updates
    5. 11.5 Community Resources
    6. 11.6 Trademarks
    7. 11.7 Electrostatic Discharge Caution
    8. 11.8 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • RHS|48
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • 5-Channel (4 Data + 1 Clock) Channel Link LVDS Parallel Interface Supports 24-Bit Data 3-Bit Control at 10 to 75 MHz
  • AC-Coupled STP Interconnect Up to 10 m
  • Integrated Terminations on Serializer and Deserializer
  • At-Speed Link BIST Mode and Reporting Pin
  • Optional I2C-Compatible Serial Control Bus
  • Power-Down Mode Minimizes Power Dissipation
  • 1.8-V or 3.3-V Compatible LVCMOS I/O Interface
  • >8-kV HBM
  • –40° to 85°C Temperature Range
  • Serializer (DS92LV0421)
    • Data Scrambler for Reduced EMI
    • DC–Balance Encoder for AC Coupling
    • Selectable Output VOD and Adjustable De-Emphasis
  • Deserializer (DS92LV0422)
    • Fast Random Data Lock; No Reference Clock Required
    • Adjustable Input Receiver Equalization
    • EMI Minimization on Output Parallel Bus (SSCG and LVDS VOD Select)

2 Applications

  • Embedded Video and Displays
  • Medical Imaging and Factory Automation
  • Office Automation (Printers and Scanners)
  • Security and Video Surveillance
  • General-Purpose Data Communication

3 Description

The DS92LV042x chipset translates a Channel Link LVDS video interface (4 LVDS Data + LVDS Clock) into a high-speed serialized interface over a single CML pair. The DS92LV042x enables applications currently using popular Channel Link or OpenLDI LVDS style devices to upgrade seamlessly to an embedded clock interface. This serial bus scheme reduces interconnect cost and eases design challenges. The parallel OpenLDI LVDS interface also reduces FPGA I/O pins, board trace count, and alleviates EMI issues when compared to traditional single-ended wide bus interfaces.

Programmable transmit de-emphasis, receive equalization, on-chip scrambling, and DC-balancing enables longer distance transmission over lossy cables and backplanes. The DS92LV0422 automatically locks to incoming data without an external reference clock or special sync patterns, providing easy plug-and-go operation.

The DS92LV042x chipset is programmable through an I2C interface as well as through pins. A built-in, at-speed BIST feature validates link integrity and may be used for system diagnostics. The DS92LV0421 and DS92LV0422 can be used interchangeably with the DS92LV2421 or DS92LV2422. This allows designers the flexibility to connect to the host device and receiving devices with different interface types: LVDS or LVCMOS.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
DS92LV0421 WQFN (36) 6.00 mm × 6.00 mm
DS92LV0422 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 Block Diagram

DS92LV0421 DS92LV0422 30120927.gif