SAA5281 Ver la hoja de datos (PDF) - Philips Electronics

Número de pieza

componentes Descripción

Fabricante

SAA5281

Integrated Video input processor and Teletext decoder (IVT1.8*)

Philips Electronics 

Philips Semiconductors

Integrated Video input processor and

Teletext decoder (IVT1.8*)

Preliminary specification

SAA5281

ENHANCED MODE

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).

handbook, halfpage

ROW

CHAPTER 0 PACKET 24

0

CHAPTER 0 PACKETS 27 / 0 1

CHAPTER 1 PACKET 24

2

CHAPTER 1 PACKETS 27 / 0 3

CHAPTER 2 PACKET 24

4

CHAPTER 2 PACKETS 27 / 0 5

CHAPTER 3 PACKET 24

6

CHAPTER 3 PACKETS 27 / 0 7

CHAPTER 4 PACKET 24

8

CHAPTER 4 PACKETS 27 / 0 9

CHAPTER 5 PACKET 24

10

CHAPTER 5 PACKETS 27 / 0 11

CHAPTER 6 PACKET 24

12

CHAPTER 6 PACKETS 27 / 0 13

not used

14

not used

15

PACKETS 8 / 30 / 0,1

16

PACKETS 8 / 30 / 2,3

17

PACKETS 8 / 30 / 4 to 15

18

not used

19 to 24

MBD788

Fig.11 Organization of the extension memory in enhanced mode.

1996 Nov 04

19

Share Link: