DLPS029F April   2013  – May 2019 DLPC350

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Simplified Application
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
    2. Table 1. Power and Ground Pin Descriptions
  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  I/O Electrical Characteristics
    6. 6.6  I2C0 and I2C1 Interface Timing Requirements
    7. 6.7  Port 1 Input Pixel Interface Timing Requirements
    8. 6.8  Port 2 Input Pixel Interface (FPD-Link Compatible LVDS Input) Timing Requirements
    9. 6.9  System Oscillator Timing Requirements
    10. 6.10 Reset Timing Requirements
    11. 6.11 Video Timing Input Blanking Specification
      1. 6.11.1 Source Input Blanking
    12. 6.12 Programmable Output Clocks Switching Characteristics
    13. 6.13 DMD Interface Switching Characteristics
    14. 6.14 JTAG Interface: I/O Boundary Scan Application Switching Characteristics
  7. 7 Parameter Measurement Information
    1. 7.1 Power Consumption
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Board Level Test Support
    4. 8.4 Device Functional Modes
      1. 8.4.1 Structured Light Applications
      2. 8.4.2 (LVDS) Receiver Supported Pixel Mapping Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Typical Chipset Application
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 DLPC350 System Interfaces
            1. 9.2.1.2.1.1 Control Interface
            2. 9.2.1.2.1.2 Input Data Interface
          2. 9.2.1.2.2 DLPC350 System Output Interfaces
            1. 9.2.1.2.2.1 Illumination Interface
            2. 9.2.1.2.2.2 Trigger Interface (Sync Outputs)
          3. 9.2.1.2.3 DLPC350 System Support Interfaces
            1. 9.2.1.2.3.1 Reference Clock
            2. 9.2.1.2.3.2 PLL
            3. 9.2.1.2.3.3 Program Memory Flash Interface
          4. 9.2.1.2.4 DMD Interfaces
            1. 9.2.1.2.4.1 DLPC350 to DMD Digital Data
            2. 9.2.1.2.4.2 DLPC350 to DMD Control Interface
            3. 9.2.1.2.4.3 DLPC350 to DMD Micromirror Reset Control Interface
  10. 10Power Supply Recommendations
    1. 10.1 System Power and Reset
      1. 10.1.1 Default Conditions
        1. 10.1.1.1 1.2-V System Power
        2. 10.1.1.2 1.8-V System Power
        3. 10.1.1.3 1.9-V System Power
        4. 10.1.1.4 3.3-V System Power
        5. 10.1.1.5 FPD-Link Input LVDS System Power
      2. 10.1.2 System Power-up and Power-down Sequence
      3. 10.1.3 Power-On Sense (POSENSE) Support
      4. 10.1.4 Power-Good (PWRGOOD) Support
      5. 10.1.5 5-V Tolerant Support
      6. 10.1.6 Power Reset Operation
      7. 10.1.7 System Reset Operation
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 DMD Interface Design Considerations
      2. 11.1.2 DMD Termination Requirements
      3. 11.1.3 Decoupling Capacitors
      4. 11.1.4 Power Plane Recommendations
      5. 11.1.5 Signal Layer Recommendations
      6. 11.1.6 General Handling Guidelines for CMOS-Type Pins
      7. 11.1.7 PCB Manufacturing
        1. 11.1.7.1 General Guidelines
        2. 11.1.7.2 Trace Widths and Minimum Spacings
        3. 11.1.7.3 Routing Constraints
        4. 11.1.7.4 Fiducials
        5. 11.1.7.5 Flex Considerations
        6. 11.1.7.6 DLPC350 Thermal Considerations
    2. 11.2 Layout Example
      1. 11.2.1 Printed Circuit Board Layer Stackup Geometry
      2. 11.2.2 Recommended DLPC350 MOSC Crystal Oscillator Configuration
      3. 11.2.3 Recommended DLPC350 PLL Layout Configuration
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Video Timing Parameter Definitions
      2. 12.1.2 Device Nomenclature
      3. 12.1.3 Device Marking
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Trademarks
    4. 12.4 Glossary
  13. 13Mechanical, Packaging, and Orderable Information
    1. 13.1 Package Option Addendum
      1. 13.1.1 Packaging Information

Package Options

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

11.1.1 DMD Interface Design Considerations

The DMD interface is modeled after the low-power DDR-memory (LPDDR) interface. To minimize power dissipation, the LPDDR interface is defined to be unterminated. As a result, PCB signal-integrity management is imperative. Impedance control and crosstalk mitigation is critical to robust operation. LPDDR board design recommendations include trace spacing that is three times the trace width, impedance control within 10%, and signal routing directly over a neighboring reference plane (ground or 1.9-V plane).

DMD interface performance is also a function of trace length; therefore the length of the trace limits performance. The DLPC350 controller only works over a narrow range of DMD signal routing lengths at 120 MHz. Ensuring positive timing margins requires attention to many factors.

As an example, the DMD interface system timing margin can be calculated as follows.

Equation 1. Setup Margin = (DLPC350 Output Setup) – (DMD Input Setup) – (PCB Routing Mismatch) – (PCB SI Degradation)
Equation 2. Hold-Time Margin = (DLPC350 Output Hold) – (DMD Input Hold) – (PCB Routing Mismatch) – (PCB SI Degradation)

PCB signal integrity degradation can be minimized by reducing the affects of simultaneously switching output (SSO) noise, crosstalk, and inter-symbol interface (ISI). Additionally, PCB routing mismatch can be budgeted via controlled PCB routing.

In an attempt to minimize the need for signal integrity analysis that would otherwise be required, the following PCB design guidelines are provided. They describe an interconnect system that satisfies both waveform quality and timing requirements (accounting for both PCB routing mismatch and PCB SI degradation). Variation from these recommendations may also work, but should be confirmed with PCB signal integrity analysis or lab measurements.