TDA935x Philips, TDA935x Datasheet - Page 43

• Manufacturer Part Number: TDA935x
• Description: TV Signal Processor-Teletext Decoder with Embedded u-Controller
• Manufacturer: Philips

Philips Semiconductors
TXT: The Italic attribute is not available.
C
CLUT (Colour Look Up Table)
A CLUT (Colour Look Up Table) with 16 colour entries is
provided. The colours are programmable out of a palette
of 4096(4 bits per R, G and B). The CLUT is defined by
writing data to a RAM that resides in the MOVX address
space of the 80C51.
Foreground Colour
CC: The foreground colour can be chosen from 8 colours
on a character by character basis. Two sets of 8 colours
are provided. A serial attribute switches between the
banks (see Table 18 Serial Mode 1, bit 7). The colours are
the CLUT entries 0 to 7 or 8 to 15.
2001 Jan 18
OLOURS
TV signal processor-Teletext decoder with
embedded -Controller
10
11
12
13
14
15
3
8
9
0
1
2
4
5
6
7
Table 13 CLUT Colour values
b11. . .b4
RED3-0
0 2 4 6 8 10
0 0 0 0
0 0 0 0
1 1 1 1
1 1 1 1
...
12x16 character matrix
Field 1
Field 2
GRN3-0
b7. . .b4
0 0 0 0
0 0 0 0
1 1 1 1
1 1 1 1
...
0 2 4 6 8 10 0 2 4 6 8 10 0 2 4 6 8 10 0 2 4 6 8 10 0 2 4 6 8 10
BLU3-0
b3. . .b0
0 0 0 0
1 1 1 1
0 0 0 0
1 1 1 1
...
Fig.14 Italic Characters (12x10, 12x13 & 12x16).
Colour
entry
12x13 character matrix
14
15
...
0
1
43
TXT: The foreground colour is selected via a control
character. The colour control characters takes effect at the
start of the next character (“Set-After”) and remain valid
until the end of the row, or until modified by a control
character. Only 8 foreground colours are available.
The TEXT foreground control characters map to the CLUT
entries as shown below:
Background Colour
CC: This attribute is valid from the time set until end of row
or otherwise modified if set with Serial Mode 0. If set with
Serial Mode 1, then the colour is set from the next
character onwards.
The background colour can be chosen from all 16 CLUT
entries.
Table 14 Foreground CLUT mapping
Control Code
TDA935X/6X/8X PS/N2 series
00h
01h
02h
03h
04h
05h
06h
07h
12x10 character matrix
Defined Colour
Magenta
Yellow
Black
Green
White
Cyan
Blue
Red
Tentative Device Specification
Indented by 7/6/4
Indented by 6/5/3
Indented by 5/4/2
Indented by 4/3/1
Indented by 3/2/0
Indented by 2/1
Indented by 1/0
Indented by 0
CLUT Entry
0
1
2
3
4
5
6
7