SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
A synchronization mismatch between the frame buffer and the display refreshes, named tearing effect, can lead to images that appear to be stretched on the screen. To avoid it, a synchronization mechanism is used between the DISPC and the process that updates the buffer. An interrupt is generated when the display reaches a predefined line number. The PROGRAMMEDLINENUMBER_IRQ interrupt (DISPC_IRQSTATUS and DISPC_IRQENABLE) is a level signal and stays active during the programmed line of the display.