SPRUIL1D May 2019 – December 2024 DRA829J , DRA829J-Q1 , DRA829V , DRA829V-Q1 , TDA4VM , TDA4VM-Q1
Figure 6-52 shows an overview of a display subsystem. It covers the point to point interfaces between the DPI/SDI and DSI blocks. Other blocks and interfaces are included to give a better understanding of the environment for this interface.
A DSI interface is made up from one DSI controller and one D-PHY block. D-PHY is the physical layer of the DSI interface. The DSI block handles protocol. The DSI interfaces support displays that comply with the MIPI DSI standard.
The displays can be of either command mode type or video mode type. Command mode displays have a frame memory that can hold the entire image. The display is refreshed from this memory and only changes of the display content are sent over the display interface. Video mode displays do not have this memory and thus all data for every refresh must be transferred in real time.
The SDI block can support one display in command mode. By using command mode displays and rerouting of connections, between display updates, more than two displays can be connected and active.