The recommended power-up sequence is to apply power to the core voltage (VDD_CORE) first, followed by the I/O voltage (VDD_I/O). This ensures that the internal voltage regulators are powered up correctly.
The EMIF can be configured for DDR2 memory by setting the EMIF control register (EMIF_CTL) to select DDR2 mode, and configuring the memory timing parameters (tRP, tRAS, tWR, etc.) according to the DDR2 memory specifications.
The maximum frequency of the ARM Cortex-A8 core is 850 MHz, but this can be adjusted based on the specific application and power consumption requirements.
The VPSS can be configured using the VPSS control registers to select the desired video codec (e.g. H.264, MPEG-4) and configure the video processing pipeline. The VPSS also provides a set of APIs for video encoding and decoding.
The OCROM contains boot loader code and can be used to boot the device from an external memory device. The OCROM can be configured using the Boot Mode Select (BMS) pins and the Boot Configuration Register (BCR).