SNLS401C February   2012  – September 2018 DS90C187

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Typical Application
      2.      Typical Application
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Pin Configuration and Functions
    1.     DS90C187 Pin Descriptions — Serializer
  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 Recommended Input Characteristics
    7. 7.7 Switching Characteristics
    8. 7.8 AC Timing Diagrams
    9. 7.9 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagrams
    3. 8.3 Device Functional Modes
      1. 8.3.1  Device Configuration
      2. 8.3.2  Single Pixel Input / Single Pixel Output
      3. 8.3.3  Single Pixel Input / Dual Pixel Output
      4. 8.3.4  Dual Pixel Input / Dual Pixel Output
      5. 8.3.5  Pixel Clock Edge Select (RFB)
      6. 8.3.6  Power Management
      7. 8.3.7  Sleep Mode (PDB)
      8. 8.3.8  LVDS Outputs
      9. 8.3.9  18 bit / 24 bit Color Mode (18B)
      10. 8.3.10 LVCMOS Inputs
    4. 8.4 Programming
      1. 8.4.1 LVDS Interface / TFT Color Data Recommended Mapping
        1. 8.4.1.1 Color Mapping Information
  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
        1. 9.2.2.1 LVDS Interconnect Guidelines
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
    1. 10.1 Power Up Sequence
    2. 10.2 Power Supply Filtering
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

8.3.9 18 bit / 24 bit Color Mode (18B)

The 18B pin can be used to further save power by powering down the 4th LVDS driver in each used bank when the application requires only 18 bit color or 3D+C LVDS. Set the 18B pin to logic HIGH to TRI-STATE® OA_3+/- and OB_3+/- (if the device is configured for dual pixel output). For 24 bit color applications this pin should be set to logic LOW. Note that the power down function takes priority over the TRI-STATE® function. So if the device is configured for 18 bit color Single Pixel In/Single Pixel Out, LVDS channel OB_3+/- will be powered down and not TRI-STATE®. If an LVDS driver is powered down, each output terminal is pulled low by a 100 ohm resistor to ground.

Table 5. Color DepthConfigurations

18B Result
0 24bpp, LVDS 4D+C or 8D+2C
1 18bpp, LVDS 3D+C or 6D+2C