DLPC3439 Firmware v7.7.1 Release Notes
March 14, 2022
Table of Contents
Overview
These are the release notes for the following firmware image file:
- Firmware Version: 7.7.1
- Embedded Software Version: 4.2.2
- Generated from DLP Composer Version: 13.13
- DMD: DLP4710
- Controller: DLPC3439
- PMIC: DLPA3005
Configuration Settings
- I2C Address: 0x36
- DMD Pin Mapping: 2
- Rlim value: 9mΩ
- Optimized Frame Rates: 1080p:60Hz; Reduced resolution: 120Hz
- Four 2D looks (cool, medium, warm, and other) and one 3D look (look 0 through 4 respectively)
- Degamma curve using power law 2.2
- Default CCA (color coordinate adjustment) of an identity matrix
New Features and Changes
- Fixed issue where the DMD was not properly parked in some situations if using parallel video reduced VESA timings. To ensure reliable operations across supported video inputs, It is recommended to upgrade old firmware to this version for the fix to be applied.
- Modify Dual ASIC software to ignore fuse for Old DMD Devices
- Fixed I2C communication when sending invalid opcodes
- Fixed Image corrupted when changing external video resolution
- Corrected Splash Screen Header byte count inconsistency
- DMD Refresh Sequence Validation support
- DMD Refresh bitplane is disabled when Image Border/Curtain is enabled
- Fix Added DMD training
Known Issues and Limitations
- Boot up in low batt mode with half image discoloration for DLPA3000 2 cell battery
Technical Support and Product Updates
Thermistor Processing Documentation
- Using System Temperature via I2C commands:
- Read System Temperature (0xd6)
- Note: The temperature of the thermistor is read in degrees Celsius in a magnitude of 10 times the reading of thermistor. Bit 11 (the most significant bit) denotes the sign temperature. A '0' means a positive temperature, while '1' denotes a negative temperature.
- Example #1: b(11:0) = 000110101010; 426d / 10d = 42.6degC
- Example #2: b(11:0) = 100110101010; 426d / 10d = -42.6degC
- Note: This temperature reading will need to be calibrated per the design and specific thermsitor chosen of custom boards. Offset to determine the true temperature of the thermistor reading. Texas Instruments DLP hardware uses Murata's NCP15WF104F03RC.