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參數資料
| 型號： | SAA5551PS/NNNN |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, OTPROM, 12 MHz, MICROCONTROLLER, PDIP52 |
| 封裝： | 0.600 INCH, PLASTIC, SDIP-52 |
| 文件頁數： | 42/80頁 |
| 文件大?。?/td> | 340K |
| 代理商： | SAA5551PS/NNNN |
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1999 Oct 27
47
Philips Semiconductors
Preliminary specication
Standard 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
written into the text memory. The first 8 bytes of the header
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.18 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
923
0
10
11
12
13
14
15
20
21
22
23
24
25
16
17
18
19
Row
Packet X/24 for page in block 0(1)
Packet X/24 for page in block 1(1)
Packet X/27/0 for page in block 0
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(1)
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 8/30/0.1
Packet 8/30/2.3
Packet 8/30/4-15
VPS Data
Extension Packet Block (9)
10(2)
相關PDF資料 |
PDF描述 |
|---|---|
| SAA5500PS/NNNN | 8-BIT, OTPROM, 12 MHz, MICROCONTROLLER, PDIP52 |
| SAA6703AH | CRT OR FLAT PNL GRPH DSPL CTLR, PQFP160 |
| SAA7157T-T | 29 MHz, VIDEO CLOCK GENERATOR, PDSO20 |
| SAA7388GP-T | 8-BIT, 50.4 MHz, MICROCONTROLLER, PQFP80 |
| SAB-C163-16F25F | 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP100 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SAA5552PS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Standard TV Microcontrollers with On-Screen Display(OSD) |
| SAA5552TRI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
| SAA5553PS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Standard TV Microcontrollers with On-Screen Display(OSD) |
| SAA5553TRI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
| SAA5561 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Enhanced TV microcontrollers with On-Screen Display OSD |
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