DM3725CUS100 datasheet by Texas Instruments

DM3725CUS100 Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the DM3725CUS100?
  The recommended power-up sequence is to apply the core voltage (VDD_CORE) first, followed by the I/O voltage (VDD_IO). This ensures that the internal voltage regulators are powered up correctly.
• How do I optimize the DDR2 memory interface for maximum performance?
  To optimize the DDR2 memory interface, ensure that the memory clock frequency is set to the recommended 133 MHz, and the memory timing parameters (tCL, tRAS, tRP, tRCD) are set according to the DDR2 specification. Additionally, ensure that the memory voltage (VDD_DDR2) is set to the recommended 1.8V.
• What is the maximum operating temperature range for the DM3725CUS100?
  The maximum operating temperature range for the DM3725CUS100 is -40°C to 85°C. However, it's recommended to operate the device within the industrial temperature range of -20°C to 70°C for optimal performance and reliability.
• How do I configure the EMIF (External Memory Interface) for NAND flash memory?
  To configure the EMIF for NAND flash memory, set the EMIF mode to asynchronous mode, and configure the NAND flash timing parameters (tRC, tWC, tREA) according to the NAND flash specification. Additionally, ensure that the NAND flash voltage (VDD_NAND) is set to the recommended 3.3V.
• What is the recommended method for booting the DM3725CUS100 from NAND flash memory?
  The recommended method for booting the DM3725CUS100 from NAND flash memory is to use the ROM bootloader, which is stored in the device's ROM. The ROM bootloader can be configured to boot from NAND flash memory by setting the appropriate boot mode pins (BOOT_MODE[1:0]) and configuring the NAND flash memory interface.