The recommended power-on sequence is to apply power to the core voltage (VDD) first, followed by the input/output voltage (VDDIO). This ensures that the internal voltage regulators are powered up correctly.
To optimize the DDR2 memory interface, ensure that the memory clock frequency is set to the maximum supported frequency (166 MHz), and use the EMIF timing parameters provided in the datasheet. Additionally, use the DDR2 memory calibration feature to optimize the memory interface timing.
The maximum operating temperature range for the DM647 is -40°C to 85°C. However, the device can operate at temperatures up to 90°C with reduced performance and reliability.
To configure the EMIF for NAND flash memory, set the EMIF timing parameters to the values recommended in the datasheet. Additionally, ensure that the NAND flash memory is connected to the correct EMIF pins and that the EMIF is configured in asynchronous mode.
The maximum clock frequency supported by the DM647 is 700 MHz. However, the actual clock frequency may be limited by the specific application and system design.
TMS320DM647ZUT7 datasheet
by Texas Instruments
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