Display Controller; Overview Of Display Controller - Samsung S5PC110 Manual

S5PC110_UM
1

DISPLAY CONTROLLER

1.1 OVERVIEW OF DISPLAY CONTROLLER

The Display controller consists of logic for transferring image data from a local bus of the camera interface
controller or a video buffer located in system memory to an external LCD driver interface. The LCD driver interface
supports three kinds of interface, namely, RGB-interface, indirect-i80 interface, and YUV interface for writeback.
The display controller uses up to five overlay image windows that support various color formats, 256 level alpha
blending, color key, x-y position control, soft scrolling, and variable window size, among others.
The display controller supports various color formats such as RGB (1 bpp to 24 bpp) and YCbCr 4:4:4 (only local
bus). It is programmed to support the different requirements on screen related to the number of horizontal and
vertical pixels, data line width for the data interface, interface timing, and refresh rate.
The display controller transfers the video data and generates the necessary control signals, such as,
RGB_VSYNC, RGB_HSYNC, RGB_VCLK, RGB_VDEN and SYS_CS0, SYS_CS1, SYS_WE. In addition to
generating control signals, the display controller contains data ports for video data (RGB_VD[23:0], and SYS_VD),
as shown in
Figure 1-1.
24
24
FIFO I/F
(8bit * 3)
24
64 ( ID : 1bit )
AXI
Master
( ID : 2bit )
64
I/F
AHB
32
Slave I/F
Local
I/F
(3-ch.)
256x64
FIFO
(5-ch.)
Figure 1-1
FIMD 6.0
VTIME_RGB_TV
SFRFILE
Block Diagram of Display Controller
1 0BDISPLAY CONTROLLER
VTIME_i80
YUV IF
RGB I/F
I80 I/F
CTRL
30
WB_YUV
24
RGB_VD
24
SYS_VD
1-1