DLPU082B August   2021  – August 2022 DLPC7540

 

  1.   Programmer's Guide
  2.   Trademarks
  3. 1 Scope
  4. 2 References
  5. 3 Acronyms
  6. 4 System Boot
    1. 4.1 Data In flash
    2. 4.2 Bootloader Application
    3. 4.3 Main Application
    4. 4.4 Commands Supported by Bootloader and Main Applications
    5. 4.5 Debug Terminal
    6. 4.6 HOST_IRQ/SYSTEM_BUSY
    7. 4.7 Heartbeat
    8. 4.8 Low-level Fault
  7. 5 System Status
  8. 6 Version
  9. 7 Power Modes
  10. 8 Display Modes
  11. 9 Source Detection and Configuration
  12. 10Internal sources
    1. 10.1 Test Patterns (TPG)
    2. 10.2 Solid Field (SFG) Color
    3. 10.3 Curtain
  13. 11Display Formatting
  14. 12Image Processing
  15. 13Illumination Control
  16. 14Peripherals
    1. 14.1 GPIO
    2. 14.2 PWM
  17. 15Interface Protocol
    1. 15.1 Supported Interfaces
    2. 15.2 I2C Target
    3. 15.3 USB
  18. 16Command Protocol
    1. 16.1 Command Packet
    2. 16.2 Response Packet
    3. 16.3 Destination Details
    4. 16.4 Error Handling and Recovery
    5. 16.5 System Busy - I2C scenarios
      1. 16.5.1 GPIO implementation
      2. 16.5.2 Short Status response
    6. 16.6 Support for Variable Data Size
  19. 17Auto-Initialization Batch File
  20. 18Command Descriptions
  21. 19System Commands
    1. 19.1  3D
    2. 19.2  Administrative
    3. 19.3  Autolock
    4. 19.4  Blending
    5. 19.5  Bootloader
    6. 19.6  Calibration
    7. 19.7  Debug Internal
    8. 19.8  Debug
    9. 19.9  General Operation
    10. 19.10 Illumination
    11. 19.11 Image Processing
    12. 19.12 Manual WPC
    13. 19.13 Peripherals
    14. 19.14 Warping
  22.   Revision History

15.2 I2C Target

While writing to the DLPC operating in the I2C target configuration, the first byte following the start condition should be the DLPC device write address (34h). It is possible to change the device address to any other desired value using DLP Composer tool. The remaining bytes are sent as specified in the command protocol section Section 16.

While reading from the DLPC in I2C target configuration, the first byte following the start condition should be DLPC device write address +1 (35h default) followed by header and opcode bytes as explained later in the document. All reads from DLPC via I2C interface starts with a write as explained above specifying the opcode for read. The host should then continue the I2C transaction with a Restart-Read followed by the number of bytes associated with the command and finally the Stop.