Display Serial Interface

It defines a serial bus and a communication protocol between the host, the source of the image data, and the device which is the destination.

The MIPI Alliance was formed in 2003, aiming to establish standards in mobile industry components.

At the physical layer, DSI specifies a high-speed (e.g., 4.5 Gbit/s/lane for D-PHY 2.0[3]) differential signaling point-to-point serial bus.

In this mode, the data rate is insufficient to drive a display, but is usable for sending configuration information and commands.

High speed mode is still designed to reduce power usage due to its low voltage signaling and parallel transfer ability.

It often includes commands required to program non-volatile memory, set specific device registers (such as gamma correction), or perform other actions not described in the DSI standard.

Packets are composed of a DataID, word count, error correction code (ECC), payload and checksum (CRC).

Image data on the bus is interleaved with signals for horizontal and vertical blanking intervals (porches).