SDA55XX Datasheet, PDF (194/230 Pages) Infineon Technologies AG – Preliminary & Confidential

Preliminary & Confidential
SDA 55xx
Display
To decide the levels of COR and BLANK for BOX0 two global parameters are
used:
COR_BOX0
0
0
1
1
BLA_BOX0
0
1
0
1
Description
Box transparency levels of COR and BLANK are overruled by:
COR = 0; BLANK = 0
Box transparency levels of COR and BLANK are overruled by:
COR = 0; BLANK = 1
Box transparency levels of COR and BLANK are overruled by:
COR = 1; BLANK = 0
Box transparency levels of COR and BLANK are overruled by:
COR = 1; BLANK = 1
see also 18.4 / Global Display Word (GDW)
For characters which are using subCLUT0 there are two types of transparencys
which can be defined. Which of these two box transparencys is used is defined
character individual inside the bit BOX in CDW (character display word; see
also 18.3).
Transparency definition for characters for which BOX is set to 1 and which are
using subCLUT0:
GLBT2_BOX1 GLBT1_BOX1 GLBT0_BOX1 Description
X
0
0
Box transparency is disabled for BOX1
0
0
1
Box transparency is enabled for BOX1 for
following pixels:
Foreground pixels of ROM characters
0
1
0
Box transparency is enabled for BOX1 for
following pixels:
Foreground pixels of 1-bit DRCS characters
0
1
1
Box transparency is enabled for BOX1 for
following pixels:
Foreground pixels of ROM characters
Foreground pixels of 1-bit DRCS characters
Semiconductor Group
194
User’s Manual July 99