ADE3000SXT STMicroelectronics, ADE3000SXT Datasheet - Page 61

• Manufacturer Part Number: ADE3000SXT
• Description: LCD Display Engines with Integrated DVI/ ADC and YUV Ports
• Manufacturer: STMicroelectronics

ADE3XXX
PGEN_PGEN_ENAB
PGEN_GRID0
PGEN_GRID1
PGEN_GRID2
PGEN_GRID3
PGEN_GRID4
PGEN_GRID5
PGEN_GRID6
PGEN_GRID7
PGEN_GRID_X_L
PGEN_GRID_X_H
PGEN_GRID_Y_L
PGEN_GRID_Y_H
PGEN_GRID_X_OFFSET_X_L
PGEN_GRID_X_OFFSET_X_H
PGEN_GRID_Y_OFFSET_Y_L
PGEN_GRID_Y_OFFSET_Y_H
When the programmed block size corresponds to a larger 8x8 grid than the total screen area, only
the blocks or part of blocks included in the output screen space are rendered. The 8x8 block set is
upper left justified. All blocks from the right and bottom sides which are outside the total display area
are not rendered.
When the programmed block size corresponds to a smaller 8x8 grid than the total screen area, the
part of the screen area which is outside the 8x8 grid is forced to black.
Pattern Engine
The pattern generator has two pattern display engines to display two patterns simultaneously on the
LCD screen. Each engine displays horizontal or vertical bicolor stripes, bicolor checkers, color bars,
gray scales or color scales. It is also possible to select the video stream from the scaler as a pattern.
The pattern engine displays a bi-directional x-y symmetric pattern. Two 24b colors, C0 and C1, are
alternately displayed with a horizontal period of Width and vertical period of Height. Programming a
large Width and a small Height generates horizontal bars whereas the opposite generates vertical
bars. Programming small numbers for Width and Height generates checker patterns.
Both patterns are also given X and Y offset attributes, they can be centered inside the grid blocks.
A gradient effect can be applied independently on each pattern, to either or both horizontal and
vertical directions. The gradient effect takes two parameters: STEP and DELTA that define a ramp.
Borders
The border generator adds a single pixel width border to the whole display area. Each side color of
the display is selectable among 8 independent colors.
Register Name
0x0600
0x0601
0x0602
0x0603
0x0604
0x0605
0x0606
0x0607
0x0608
0x0609
0x060A
0x060B
0x060C
0x060D
0x060E
0x060F
0x0610
Table 21: PGEN Registers (Sheet 1 of 4)
Addr
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Mode
[7:1]
[0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:4]
[3:0]
[7:0]
[7:4]
[3:0]
[7:0]
[7:4]
[3:0]
[7:4]
[3:0]
Bits
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
Default
0 = disable PGEN block
1 = enable PGEN block
Grid Row 0
Grid Row 1
Grid Row 2
Grid Row 3
Grid Row 4
Grid Row 5
Grid Row 6
Grid Row 7
width of a grid block in pixels [11:8]
height of a grid block in pixels [11:8]
grid block horizontal offset in pixels [11:8]
Reserved
width of a grid block in pixels [7:0]
Reserved
height of a grid block in pixels [7:0]
Reserved
grid block horizontal offset in pixels [7:0]
Reserved
grid block vertical offset in pixels
Pattern Generator Block
Description
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