11/30

STV5348 - STV5348/H - STV5348/T

Table 9. Row 25 Received Page Control Data Format

VPS DATA (see Table 10)

VPS data are stored in row 25 chapter 5 as shown

in Table 10 when VPS enable bit (D4 of R8 regis-

ter) is set. VPS data bits are decoded and stored

in a received area with biphase error bit.

8/30/2 data are stored as received (without ham-

ming decoding) in Row 23 chapter 5 according to

Table 10.

8/30 packet and VPS data decoding is the respon-

sibility of the control software. The decoder simply

stores transmitted data.

Registers R0 to R10 are write only whilst R11A is

a read/write and R11B is read only.

The automatic succession on a byte by byte basis

is indicated by the arrows in Table 10.

In the normal operating mode TB should be set to

logic level 0.

After power-up the contents of the registers are as

follows: all bits in registers R0 to R11A are cleared

to zero with the exception of bits D0 and D1 in reg-

isters R5 and R6 which are set to logical one.

After power-up all the memory bytes are preset to

hexadecimal value 20H (space) with the exception

of the byte corresponding to row 0 of column 7 of

chapter 0 which is set to the value corresponding

to "alpha white" hexadecimal value 07H.

Table 10. PDC Data Storage

D0

PU0

PT0

MU0

MT0

HU0

HT0

C7

C11

MAG0

0

D1

PU1

PT1

MU1

MT1

HU1

HT1

C8

C12

MAG1

0

D2

PU2

PT2

MU2

MT2

HU2

C5

C9

C13

MAG2

0

D3

PU3

PT3

MU3

C4

HU3

C6

C10

C14

0

0

D4

HAM

HAM

HAM

HAM

HAM

HAM

HAM

HAM

FOUND

0

D5

00000

0000

PBLF

D6

00000

00000

D7

00000

00000

COLUMN

01234

56789

Page number : - MAG = magazine, PU = page units, PT = page tens.

Page sub-code : - MU = minutes units, MT = minutes tens, HU = hours units, HT = hours tens.

PBLF = page being looked for, FOUND = low for page found, HAM = hamming error in byte, C4-14 = control bits.

Column

0123456

789

10

11

12

13

14

15

16

17

18

19

8/30/2 (Row 23)

D

Initial Page

b13 b14 b15 b16 b17 b18 b19 b20 b21 b22 b23 b24 b25

VPS (Row 25)

Received Page Information

B11

B12

B13

B14

B15

Column

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

8/30/2 (Row 23)

Status Display

VPS (Row 25)

B4

B5