SDA5523 Micronas Semiconductor, SDA5523 Datasheet - Page 71

• Manufacturer Part Number: SDA5523
• Description: SDA55xx TVText Pro
• Manufacturer: Micronas Semiconductor

DATA SHEET
Table 2–45: Character display word: RAM location: Display memory, continued
2.13.4.1. Access of Characters
The DRCS characters and ROM characters are
accessed by a 10-bit character address inside the
character
Section 2.13.9.1. on page 102).
2.13.4.2. Address Range from 0
This address range can either be used to access ROM
characters or to access 1-bit DRCS characters.
See also Section 2.13.5. on page 75 Global Display
Word (GDW).
Table 2–46: Definition of character access mode
Micronas
Byte
Pos.
2
CHAAC
0
1
Bit
16
17
18
19
20
21
22
23
display
Description
Normal mode:
Address range 0
access ROM characters.
Enhanced mode:
Address range 0
access 1-bit DRCS characters.
Name
CLUT1
CLUT2
FG0
FG1
FG2
BG0
BG1
BG2
word
Function
Bit1/CLUT select
Bit2/CLUT select
Foreground color vector
Background color vector
d
d
- 767
- 767
(CDW;
d
to 767
d
d
is used to
is used to
d
see
Sept. 10, 2004; 6251-556-3DS
also
Remark
See also Section 2.13.7.5.
See also Section 2.13.7.5.
Only used for ROM characters and 1-bit
DRCS characters; Foreground-color is
chosen if bit inside ROM-mask/RAM is set
to ‘1’
See also Section 2.13.7.5.
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
chosen if bit inside ROM-mask/RAM is set
to ‘0’; See also Section 2.13.7.5.and
Section 2.13.4.4.
SDA 55xx
71