參數(shù)資料
型號(hào)： STV5248
廠商： 意法半導(dǎo)體
英文描述： MONOCHIP TELETEXT AND VPS DECODER WITH 8 INTEGRATED PAGES
中文描述： MONOCHIP圖文電視解碼器及車輛定位系統(tǒng)集成8頁(yè)
文件頁(yè)數(shù)： 9/30頁(yè)
文件大?。?/td> 547K
代理商： STV5248
9/30
STV5348 - STV5348/H - STV5348/T
FUNCTIONAL DESCRIPTION
Displayable Page Memory Map
The organization of a page memory is shown in
Figure 10.
The display area consists of 25 rows of 40 charac-
ters per row.
The organization is as follows:
– Row zero contains the page header:
– The first seven characters (0 - 6) are used for
messages regarding the operational status.
– The eighth character is an alphanumeric
control character either "white" or "green"
defining the "search" status of the page.
When it is "white" the operational state is
normal and the header appears white; when
it is "green" the operational state corresponds
to the "search mode" and the header appears
green.
– The following twenty-four characters give the
header of the requested page when the
system is in search mode.
– The last eight characters display the time of
day.
– Row number twenty-four is used by the
microprocessor for the display of information, or
used to display X/24 colored key data according
to R0D7 bit.
– Row twenty-five comprises ten bytes of control
data concerning the received page (see Table
9) and fourteen free bytes which can be used by
the microprocessor.
Figure 10. Page Memory Organization
1
7
24
8
10
14
row free for status (R0D7 = 0) or packet X/24 (R0D7 = 1)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
ROW
8 scrolling
time characters
24 characters from page header
rolling on page search
Fixed characters
Alphanumerics white
for normal,
green on search
7 Status
Characters
MAIN PAGE DISPLAY AREA
14 bytes free
for use by
μ
C
10 bytes for received
page information
相關(guān)PDF資料
PDF描述
STV5438 MONOCHIP TELETEXT AND VPS DECODER WITH 8 INTEGRATED PAGES
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STV5345H TELETEXT DECODER WITH 8 INTEGRATED PAGES
STV5345T TELETEXT DECODER WITH 8 INTEGRATED PAGES
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