SAA5281GP Philips Semiconductors, SAA5281GP Datasheet - Page 19

• Manufacturer Part Number: SAA5281GP
• Description: Integrated Video input processor and Teletext decoder IVT1.8
• Manufacturer: Philips Semiconductors

Philips Semiconductors
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In enhanced mode, the number of extension packets captured is reduced to the minimum required for FASTEXT
operation. The first seven chapters can then be used for storage, using the system of pointers. The arrangement of
extension packets is shown in Fig.11.
When in enhanced mode and extension packets are disabled, normal 8-page mode is in operation, but the X/26 engine
is enabled (unlike normal 8-page mode).
1996 Nov 04
NHANCED MODE
Integrated Video input processor and
Teletext decoder (IVT1.8*)
Fig.11 Organization of the extension memory in enhanced mode.
handbook, halfpage
CHAPTER 2 PACKET 24
CHAPTER 3 PACKET 24
CHAPTER 4 PACKET 24
CHAPTER 4 PACKETS 27 / 0
CHAPTER 5 PACKET 24
CHAPTER 5 PACKETS 27 / 0
CHAPTER 0 PACKET 24
CHAPTER 0 PACKETS 27 / 0
CHAPTER 1 PACKET 24
CHAPTER 1 PACKETS 27 / 0
CHAPTER 2 PACKETS 27 / 0
CHAPTER 3 PACKETS 27 / 0
CHAPTER 6 PACKET 24
CHAPTER 6 PACKETS 27 / 0
PACKETS 8 / 30 / 0,1
PACKETS 8 / 30 / 2,3
PACKETS 8 / 30 / 4 to 15
not used
not used
not used
19
MBD788
ROW
0
1
2
3
4
5
6
7
8
9
10
11
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19 to 24
Preliminary specification
SAA5281