MIPI Spec

MIPI Alliance Specification for Display Serial Interface (DSI)

1 Overview
The Display Serial Interface Specification defines protocols between a host processor and peripheral devices that adhere to MIPI Alliance specifications for mobile device interfaces. The DSI specification builds on existing specifications by adopting pixel formats and command set defined in MIPI Alliance specifications for DBI-2[2], DPI-2[3], and DCS[1].

1.1 Scope
Interface protocols as well as a description of signal timing relationships are within the scope of this document. Electrical specifications and physical specifications are out of scope for this document. In addition, legacy interfaces such as DPI-2 and DBI-2 are also out of scope for this document. Furthermore, device usage of auxiliary buses such as I2C or SPI, while not precluded by this specification, are also not within its scope.

1.2 Purpose
The Display Serial Interface specification defines a high-speed serial interface between a peripheral, such as an active-matrix display module, and a host processor in a mobile device. By standardizing this interface, components may be developed that provide higher performance, lower power, less EMI and fewer pins than current devices, while maintaining compatibility across products from multiple vendors.

MIPI Alliance Standard for Display Command Set

1 Overview
The Display Command Set specification defines display module behavior for devices that adhere to the MIPI specifications for mobile device host processor, and display interfaces in an abstract, device independent way. All commands in this specification shall be supported by display modules that adhere to MIPI Alliance Standard for Display Pixel Interface[1], MIPI Alliance Standard for Display Bus Interface [2], and MIPI Alliance Standard for Display Serial Interface[3] except as provided for in the individual standards.

1.1 Scope
Display commands and logical flow are within the scope of this specification. In addition, to support device abstraction, several display architectures are also specified. Electrical specifications and interface protocols are out of scope for this document.

1.2 Purpose
The Display Command Set specification is used by manufacturers to design products that adhere to MIPI specifications for mobile device host processor and display interfaces.

Implementing the DCS standard reduces the time-to-market and design cost of mobile devices by simplifying the interconnection of products from different manufacturers. In addition, adding new features such as larger or additional displays to mobile devices is simplified due to the extensible nature of the MIPI specifications.

MIPI Alliance Standard for Display Pixel Interface

1 Overview
This document describes Display Pixel Interface (DPI), which is used for Active-Matrix LCD displays for handheld devices. The interface may be configured with data path of 16, 18 or 24 parallel data bits, and several control signals.

This document specifies the interface requirements for both ends (host and display) of the link, including the following attributes:

• Electrical
• Timing
• Pixel formats (mapping of pixel bits to data signals)
• Command set to control display behaviors

1.1 Scope
The scope of this document is to specify an electrical and logical interface between a host system (processor or controller) and an active-matrix (AM) display module. The specification is intended for display modules in mobile devices, with display resolution up to 800x480 pixels. This specification does not apply to passive-matrix display modules.

Included, and within the scope of this specification, is the power supply for interface signaling between the host processor and the display module. However, power supply for other functions in the display module are beyond the scope of this specification.

1.2 Purpose
The Display Pixel Interface specification is used by manufacturers to design products that adhere to MIPI specifications for mobile device processor, camera and display interfaces.

Implementing the DPI standard reduces the time-to-market and design cost of mobile devices by simplifying the interconnection of products from different manufacturers. In addition, adding new features such as larger or additional displays to mobile devices is simplified due to the extensible nature of the MIPI specifications.

MIPI Alliance Standard for Display Bus Interface

1 Overview
This document describes Display Bus Interface (DBI), which is used for display modules. DBI can be configured for 1, 2, 8, 9 or 16 data signals.

This document defines the interface parameters outlined below for both the host processor and display module.

• Electrical
• Timings
• Protocol examples
• Measurement methods
• Color coding
• Command set to control display behaviors

1.1 Scope
The Display Bus Interface specification defines the electrical and logical interfaces for mobile device host processors and display modules. Logical control of the display module functional blocks such as power supply, timing generator and display drivers is also within the scope of this document. The design of the functional blocks is not within the scope of this specification.

1.2 Purpose
The Display Bus Interface specification is used by manufacturers to design products that adhere to MIPI specifications for mobile device processor and display interfaces.

Implementing the DBI standard reduces the time-to-market and design cost of mobile devices by simplifying the interconnection of products from different manufacturers. In addition, adding new features such as larger or additional displays to mobile devices is simplified due to the extensible nature of the MIPI specifications.