參數(shù)資料
型號: SAA5496H
廠商: NXP Semiconductors N.V.
英文描述: DPST MINIATURE POWER RELAY
中文描述: 經(jīng)濟圖文電視和電視微控制器
文件頁數(shù): 34/68頁
文件大小: 612K
代理商: SAA5496H
1997 Jul 07
34
Philips Semiconductors
Preliminary specification
Economy teletext and TV microcontrollers
SAA5x9x family
8.8
Memory Organisation of SAA5290, SAA5291, SAA5291A and SAA5491
Teletext packets each contain 40 bytes of data and one packet is stored in each row of the text memory, the row used
being dependent on the packet number.
Packet 0, the page header, is split into 2 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.
handbook, full pagewidth
Row 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
0
6
7 8
9
0
23
39
Packet X/0
Packet X/1
Packet X/2
Packet X/3
Packet X/4
Packet X/5
Packet X/6
Packet X/7
Packet X/8
Packet X/9
Packet X/10
Packet X/11
Packet X/12
Packet X/13
Packet X/14
Packet X/15
Packet X/16
Packet X/17
Packet X/18
Packet X/19
Packet X/20
Packet X/21
Packet X/22
Packet X/23
Packet X/24
(1)
VPS Data
Basic Page Block
OSD only
MGK467
Control Data
aw/ag
Row 0
1
2
Packet X/24
(2)
Packet X/27/0
Packet 8/30
Extension Packet Memory
Fig.10 Packet storage locations.
(1) If X24 Position bit = 1.
(2) If X24 Position bit = 0.
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