OSD SRAM mapping

OSD (On-Screen Display) SRAM mapping refers to the process of mapping the OSD memory buffer (which stores the OSD display data) to a specific location in the SRAM (Static Random Access Memory) of a device. This mapping enables the OSD data to be accessed quickly and efficiently by the device's processor or graphics controller.

In general, the OSD SRAM mapping process involves setting up the memory controller of the device to map a specific portion of the SRAM to the OSD memory buffer. The size of the mapping and the starting address of the mapping can be configured based on the requirements of the specific device and application.

Once the mapping is established, the OSD data can be read from or written to the mapped SRAM location using standard memory access instructions. This allows the OSD to be displayed on the screen of the device in a timely and efficient manner, without requiring excessive processing power or memory bandwidth.