STM32F769I datasheet(52/255 Pages) STMICROELECTRONICS

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Functional overview

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DocID029041 Rev 4

2.47

DSI Host (DSIHOST)

The DSI Host is a dedicated peripheral for interfacing with MIPI® DSI compliant displays. It

includes a dedicated video interface internally connected to the LTDC and a generic APB

interface that can be used to transmit information to the display.

These interfaces are as follows:

•

LTDC interface:

–

Used to transmit information in Video mode, in which the transfers from the host

processor to the peripheral take the form of a real-time pixel stream (DPI).

–

Through a customized for mode, this interface can be used to transmit information

in full bandwidth in the Adapted Command mode (DBI).

•

APB slave interface:

–

Allows the transmission of generic information in Command mode, and follows a

proprietary register interface.

–

Can operate concurrently with either LTDC interface in either Video mode or

Adapted Command mode.

•

Video mode pattern generator:

–

Allows the transmission of horizontal/vertical color bar and D-PHY BER testing

pattern without any kind of stimuli.

The DSI Host main features:

•

Compliant with MIPI® Alliance standards

•

Interface with MIPI® D-PHY

•

Supports all commands defined in the MIPI® Alliance specification for DCS:

–

Transmission of all Command mode packets through the APB interface

–

Transmission of commands in low-power and high-speed during Video mode

•

Supports up to two D-PHY data lanes

•

Bidirectional communication and escape mode support through data lane 0

•

Supports non-continuous clock in D-PHY clock lane for additional power saving

•

Supports Ultra Low-power mode with PLL disabled

•

ECC and Checksum capabilities

•

Support for End of Transmission Packet (EoTp)

•

Fault recovery schemes

•

3D transmission support

•

Configurable selection of system interfaces:

–

AMBA APB for control and optional support for Generic and DCS commands

–

Video Mode interface through LTDC

–

Adapted Command mode interface through LTDC

•

Independently programmable Virtual Channel ID in

–

Video mode

–

Adapted Command mode

–

APB Slave

Video Mode interfaces features:

•

LTDC interface color coding mappings into 24-bit interface:

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