SDA55XX Datasheet, PDF (174/230 Pages) Infineon Technologies AG – Preliminary & Confidential

SDA 55xx
Preliminary & Confidential
Display
18.3
Parallel Character Attributes
The character display area content of each character position is defined by a 3
byte character display word (CDW; see also 18.3) in display memory:
CHARACTER DISPLAY WORD:
RAM location: display memory
Byte Bit
Pos.
0
1
2
3
0
4
5
6
7
8
9
10
11
1
12
13
14
15
16
17
18
19
2
20
21
22
23
Name
CHAR0
CHAR1
CHAR2
CHAR3
CHAR4
CHAR5
CHAR6
CHAR7
CHAR8
CHAR9
FLASH
UH
DH
DW
BOX
CLUT0
CLUT1
CLUT2
FG0
FG1
FG2
BG0
BG1
BG2
Function
Remark
Used to choose a ROM or
DRCS character
DRCS characters are defined
by the user. Up to 16 different
colors can be used within one
DRCS; see also 18.3.1
Control of flash modes
Upper half double height
Double height
Double width
Control for Boxes
Bit0/CLUT select
Bit1/CLUT select
Bit2/CLUT select
foreground color vector
background color vector
See also 18.3.2
See also 18.3.3
See also 18.3.3
See also 18.3.4
See also 18.4.6
See also 18.4.7
See also 18.4.7
See also 18.4.7
Only used for ROM
characters and 1-bit DRCS
characters; Foreground-color
is choosen if bit inside ROM-
mask/RAM is set to ’1’
see also 18.4.7
Used for ROM characters and
1-bit DRCS characters;
For 2-bit and 4-bit DRCS
characters only used in flash
mode; Background color is
choosen if bit inside ROM-
mask/RAM is set to ’0’
see also 18.4.7/18.3.2
Semiconductor Group
174
User’s Manual July 99