January 1987

9

Philips Semiconductors

Product specification

Interface for data acquisition and control

(for multi-standard teletext systems)

SAA5250

Table 5

Format table

Note

1. B8 = MSB and B2 = LSB.

R2 register

Table 6

R2 Register contents

Note

1. R27 and R23 = MSB and R24 and R20 = LSB

The R2 register provides the other two parts of the channel number (depending on the prefix) that require checking.

FORMAT BYTE

LIST 1

LIST 2

LIST 3

LIST 4

0000

0

0

0

0

0001

1

1

1

1

0010

2

2

2

2

0011

3

3

3

3

0100

4

5

6

7

0101

8

9

10

11

0110

12

13

14

15

0111

16

17

18

19

1000

20

21

22

23

1001

24

25

26

27

1010

28

29

30

31

1011

3233

3435

1100

36

37

38

39

1101

40

41

42

43

1110

44

45

46

47

1111

48

49

50

51

R27 TO R24

R23 TO R20

channel number, third digit

channel number, second digit

(hexadecimal value, third digit)

(hexadecimal value, second digit