LC7454A/M

No.6685-11/16

<Data format>

The LC7454 can extract the Index Plus + format data.

If the line contains the 1x format data, the first 15 bits of the 32 bit data buffer are filled with ‘0’ and 16th bit becomes ‘1’.

The extracted data is stored is stored form 16th to 31st bit.

32 bit data output buffer

32 bit data output buffer

Five 32 bit data buffer are provided to store maximum of 5 line data in a field. If the data with correct format exists in the

selected lines, the extracted data are stored into the buffers by the order of line number. If correct data is not found on the

selected line, the data buffer is filled with ‘0’. All five data buffers are cleared by the line 10 sensing signal in the next field.

Therefore, the data have to be read out between LN26 and the line 10 of the next field.

Please read only the selected buffers. For example, if three lines are selected, read the first three 32 bit buffers only.

p2

b6

b5

b4

b3

b2

b1

b0

p1

b6

b4

b3

b2

b1

b0

b5

Data Byte 1

p4

b6

b5

b4

b3p

b2

b1

b0

p3

b6

b4

b3

b2

b1

b0

b0 b1 b2 b3 b4 b5 b6 p1 b0 b1 b2 b3 b4 b5 b6 p2

b5

Data Byte 2

MSB

b31

b0

Output

direction

LSB

2x data format

Data Byte 3

Data Byte 4

b0

Data Byte 1

p2

b6

b5

b4

b3

b2

b1

b0

p1

b6

b4

b3

b2

b1

b0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1

b5

Data Byte 2

MSB

b31

b0

Output

direction

LSB

Fixed to ‘0000000000000001’, if 1x data is received

1x data format

b1 b2 b3 b4 b5 b6 p1

p2

p3

p4

b0 b1 b2 b3 b4 b5 b6

b0 b1 b2 b3 b4 b5 b6

b0 b1 b2 b3 b4 b5 b6