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| ID | Description | Severity | Workaround / Fix planned | |----|-------------|----------|--------------------------| | FW-01 | ADC sample jitter at >50 kHz sampling | Medium | Use hardware averaging; fix in next rev | | FW-02 | Bootloader CRC mismatch on first power-up | Low | Retry up to 3 times before fallback | | FW-03 | SPI slave mode limited to 4 MHz | Low | Documented limitation of silicon |
While most frequently associated with consumer electronics like the Smart TV, the TMS638733 is also used in:
The TMS638733 is a solid piece of hardware once you fix the software. It just took 40 hours of debugging to realize the factory firmware was the bottleneck.
| Problem | Likely Cause | Fix | |---------|--------------|-----| | Firmware runs only once | Watchdog not fed | Disable WDT or kick it regularly | | Random resets | Stack overflow | Increase stack size in linker script | | I2C/SPI no response | Wrong clock divisor | Measure SCLK with oscilloscope | | JTAG cannot connect | Pins repurposed as GPIO | Hold RESET, then connect, release reset |
To make this firmware "work" for your build, follow these steps:
