AN2641 Datasheet, PDF (1/37 Pages) STMicroelectronics – Using the color LCD controller

AN2641
Application note
Using the color LCD controller (CLCD)
in the SPEAr embedded MPU family
Introduction
The SPEAr embedded MPU family is family of configurable MPUs, based on the ARM926
CPU core. Several members the SPEAr MPU family have an embedded ARM PL-110 Color-
LCD controller (CLCD). This Application Note describes how to configure and operate any
type of color LCD with the CLCD controller and provides application developers with
troubleshooting information on common integration issues.
Color display devices play an important role in any embedded system, since usually
displays are the most visible output devices.
In SPEAr, the CLCD is connected internally to the AHB bus and acts as a bus master-slave
module. The CLCD performs translation of pixel-coded data into the required formats and
timings to drive a variety of single/dual mono and color STN as well as color TFT LCD
displays. The CLCD fetches the data for display from a frame buffer and uses its own
dedicated DMA controller to transfer the display data to the LCD panel.
October 2009
Doc ID 14027 Rev 1
1/37
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