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參數(shù)資料
| 型號(hào)： | SAA5542 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Enhanced TV microcontrollers with On-Screen Display OSD |
| 中文描述： | 與微控制器在強(qiáng)化電視屏幕顯示OSD |
| 文件頁(yè)數(shù)： | 49/100頁(yè) |
| 文件大?。?/td> | 371K |
| 代理商： | SAA5542 |
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2000 Feb 23
49
Philips Semiconductors
Preliminary specification
Enhanced TV microcontrollers with
On-Screen Display (OSD)
SAA55xx
18.1.6.4
Teletext memory organisation
The teletext memory is divided into 2 banks of 10 blocks.
Normally, when the TXT1.EXT PKT OFF bit is logic 0,
each of blocks 0 to 8 contains a teletext page arranged in
the same way as the basic page memory of the page
device and block 9 contains extension packets. When the
TXT1.EXT PKT OFF bit is logic 1, no extension packets
are captured and block 9 of the memory is used to store
another page. The number of the memory block into which
a page is written corresponds to the page request number
which resulted in the capture of the page.
Packet 0, the page header, is split into two parts when it is
writtenintothetextmemory.Thefirst8 bytesoftheheader
contain control and addressing information. They are
Hamming decoded and written into columns 0 to 7 of
row 25. Row 25 also contains the magazine number of the
acquired page and the PLBF flag but the last 14 bytes are
unused and may be used by the software, if necessary.
Fig.19 Extension packet storage locations.
(1) If ‘X24 POSN’ bit = 0.
(2) Byte 10 reserved.
handbook, full pagewidth
GSA002
0
1
2
3
4
5
6
7
8
9
9
23
0
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Row
Packet X/24 for page in block 0
(1)
Packet X/27/0 for page in block 0
Packet 8/30/0.1
Packet 8/30/2.3
Packet X/24 for page in block 1
(1)
Packet X/27/0 for page in block 1
Packet X/24 for page in block 2
(1)
Packet X/27/0 for page in block 2
Packet X/24 for page in block 3
(1)
Packet X/27/0 for page in block 3
Packet X/24 for page in block 4
Packet X/27/0 for page in block 4
Packet X/24 for page in block 5
(1)
Packet X/27/0 for page in block 5
Packet X/24 for page in block 6
(1)
Packet X/27/0 for page in block 6
Packet X/24 for page in block 7
(1)
Packet X/27/0 for page in block 7
Packet X/24 for page in block 8
(1)
Packet X/27/0 for page in block 8
Packet 8/30/4-15
VPS Data
Extension Packet Block (9)
10
(2)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAA5530 | Enhanced TV microcontrollers with On-Screen Display OSD |
| SAA5530PS | Enhanced TV microcontrollers with On-Screen Display OSD |
| SAA5531 | Enhanced TV microcontrollers with On-Screen Display OSD |
| SAA5531PS | Enhanced TV microcontrollers with On-Screen Display OSD |
| SAA5532 | Enhanced TV microcontrollers with On-Screen Display OSD |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA5542PS/NNNN | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:TV microcontrollers with Closed Captioning (CC) and On-Screen Display (OSD) |
| SAA5542TRI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
| SAA5543PS/NNNN | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:TV microcontrollers with Closed Captioning (CC) and On-Screen Display (OSD) |
| SAA5543TRI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
| SAA5547PS/NNNN | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:TV microcontrollers with Closed Captioning (CC) and On-Screen Display (OSD) |
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