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參數(shù)資料
| 型號(hào)： | SAA5290PS |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Economy teletext and TV microcontrollers |
| 中文描述： | 經(jīng)濟(jì)圖文電視和電視微控制器 |
| 文件頁數(shù)： | 25/33頁 |
| 文件大?。?/td> | 360K |
| 代理商： | SAA5290PS |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁當(dāng)前第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁
February 1995
25
Philips Semiconductors
Preliminary specification
One page Economy Teletext/TV
microcontroller
SAA5290
Fig.5 Basic page memory organization.
handbook, full pagewidth
MLC106
7 characters
for status
8 characters
usually rolling
(time)
fixed character written by
hardware, alphanumerics white nor-
mally, alphanumerics green when
looking for display page
6
1
7 8
39
31 32
24 characters from page header
rolling when display page looked for
5
to
20
0
1
2
3
4
ROW
21
22
23
24
25
MAIN PAGE DISPLAY AREA
PACKET X / 22
PACKET X / 23
PACKET X24 STORED HERE IF TXT0.7 = 1
14
10
10 bytes for
received
page information
14 bytes
free for use
by microcontroller
R
OW
0 (see Fig.5)
Row 0 is for the page header. The first seven characters
(0 to 6) are free for status messages. Character 8 is an
alphanumeric white or green control character, written
automatically by SAA5290 to give a green rolling header
when a page is being looked for. The last eight characters
are for rolling time.
R
OW
25 (see Fig.5)
The first 10 bytes of row 25 contain control data relating to
the received page as shown in Table 14. The remaining 14
bytes are free for use by the microcontroller.
Extension packet memory organization
If TXT0.X24 POS bit is set to logic 0, then Packet 24 is
written into Row 0 of the extension memory.
Packet X27/0 is written to Row 1 of the extension memory,
with bytes 0 to 37 being Hamming checked automatically.
Packet 8/30 is written to Row 2 of the extension memory,
with bytes 0 to 6 being 8/4 Hamming checked, bytes
7 to 19 unchecked and bytes 20 to 39 odd parity checked.
Packet 26 processing
The SAA5290 contains on-board hardware processing of
Packet 26 data. If a character corresponding to that being
transmitted is available in the character set then the
correct character code is written into the display memory.
Fig.6 Organization of the extension memory.
handbook, halfpage
MLC107
PACKET X24 if TXT0.X24 POS = 0
PACKET X27 / 0
PACKETS 8 / 30 / 0 to 15
1
0
2
ROW
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAA5290ZP | One page Economy Teletext/TV microcontroller |
| SAA5291PS | Economy teletext and TV microcontrollers(經(jīng)濟(jì)的圖文電視和TV控制器) |
| SAA5296APS | Economy teletext and TV microcontrollers(經(jīng)濟(jì)的圖文電視和TV控制器) |
| SAA5296PS | Economy teletext and TV microcontrollers(經(jīng)濟(jì)的圖文電視和TV控制器) |
| SAA5355 | Single-chip colour CRT controller FTFROM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA5290ZP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:One page Economy Teletext/TV microcontroller |
| SAA5290ZP/NV | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:One page Economy Teletext/TV microcontroller |
| SAA5291 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Economy teletext and TV microcontrollers |
| SAA5291A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Economy teletext and TV microcontrollers |
| SAA5291AH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Economy teletext and TV microcontrollers |
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