SDA55XX Datasheet, PDF (190/230 Pages) Infineon Technologies AG – Preliminary & Confidential

SDA 55xx
Preliminary & Confidential
Display
18.4.4 Full Screen Double Height
If double height is enabled for the full screen each line of the OSD is repeated
twice at the RGB output. As a result, characters which are normally displayed in
normal height, are now displayed in double height and characters which are
normally displayed in double height are now displayed in quadruple height.
Row 0 and 24 are handled in a special way. If double height is selected for the
full screen these two rows can be fixed to normal display (each line of these
rows is repeated only once).
In double height mode user may want to start the processing of the display at
row 12 and not at row 0. To decide this, three bits are used as a global attribute:
GDDH2
0
GDDH1 GDDH0 display area
0
0
Full Screen Normal Height:
Memory organization:
Row-No. 0
Row-No. 1
....
Row-No. 11
Row-No. 12
....
Row-No. 23
Row-No. 24
Display Appearance:
Row-No. 0
Row-No. 1
....
Row-No. 11
Row-No. 12
....
Row-No. 23
Row-No. 24
0
0
1
Full Screen Double Height:
Rows 0-11 are displayed in double height.
Row 24 is settled on bottom of display in normal
height.
Memory organization:
Row-No. 0
Row-No. 1
....
Row-No. 11
Row-No. 12
....
Row-No. 23
Row-No. 24
Display Appearance:
Row-No. 0
Row-No. 1
... ... ... ...
Row-No. 11
Row-No. 24
Semiconductor Group
190
User’s Manual July 99