參數(shù)資料
型號(hào)： SAA5647HL
廠商： NXP Semiconductors N.V.
英文描述： Enhanced TV microcontrollers with On-Screen Display (OSD)(帶全屏顯示的增強(qiáng)型TV控制器)
中文描述： 與微控制器在強(qiáng)化電視屏幕顯示（OSD）（帶全屏顯示的增強(qiáng)型電視控制器）
文件頁(yè)數(shù)： 72/112頁(yè)
文件大?。?/td> 436K
代理商： SAA5647HL
2000 Jun 30
72
Philips Semiconductors
Objective specification
Enhanced TV microcontrollers with
On-Screen Display (OSD)
SAA56xx
23.4.7
B
ACKGROUND COLOUR
CC:
This attribute is valid from the time set until the end of
a row of a display window, 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.
TXT:
The control character ‘New background’ (1DH) is
used to change the background colour to the current
foreground colour. The selection is immediate (set at) and
remains valid until the end of a row of a display window, or
until otherwise modified.
The TEXT background control characters map to the
CLUT entries, as shown in Table 29.
Table 29
Background CLUT Mapping
23.4.8
B
ACKGROUND DURATION
When set, the attribute takes effect from the current
position until the end of the display window. This is defined
in the MMR Text Area End in single window mode and in
doublewindowmodeforPage A,withMMRTextAreaEnd
B for Page B.
CC:
The background duration attribute (see Table 32,
bit 8) in combination with the End Of Row attribute (see
Table 32, bit 9) forces the background colour to be
displayed on the row until the end of the text area is
reached.
TXT:
This attribute is not available.
23.4.9
U
NDERLINE
The underline attribute causes the characters to have the
bottom scan line of the character cell forced to foreground
colour, including spaces. If background duration is set,
then underline is set until the end of the display window.
CC:
The underline attribute (see Table 32, bit 4) is valid
from the time set until the end of row of a display window,
or otherwise modified.
TXT:
This attribute is not available.
23.4.10 O
VERLINE
The overline attribute causes the characters to have the
top scan line of the character cell forced to foreground
colour, including spaces. If background duration is set,
then overline is set until the end of the display window.
CC:
The overline attribute (see Table 32, bit 5) is valid
from the time set until the end of a row of a display window,
or otherwise modified. Overlining of Italic characters is not
possible.
TXT:
This attribute is not available.
23.4.11 E
ND OF
R
OW
CC:
The number of characters in a row is flexible and can
be determined by the end of row attribute (see Table 32,
bit 9). However, the maximum number of character
positions displayed is determined by the setting of the
MMR Text Area Start or Text Area Start B, and MMR Text
Area End or Text Area End B.
Note that, when using the end of row attribute, the next
character location after the attribute should always be
occupied by a ‘space’.
TXT:
This attribute is not available, the row length is fixed
at 40 characters.
CONTROL
CODE
DEFINED
COLOUR
CLUT ENTRY
00H + 1DH
01H + 1DH
02H + 1DH
03H + 1DH
04H + 1DH
05H + 1DH
06H + 1DH
07H + 1DH
black
red
green
yellow
blue
magenta
cyan
white
8
9
10
11
12
13
14
15
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