LC7454A/M

No.6685-9/16

Slice line selection

<Input timing of slice selection data>

Slice line selection data is sent to the LC7454 in serial format . When sending the data to LC7454, the IOC terminal has to

be ‘L’ level (It will change the Data line to the input mode). The data has to be transmitted after sensing the LN26 signal.

Before sending the data, set the CE terminal to the ‘L’ level. Each bit of the data has to be changed at the falling edge of the

SCKIN and the data is captured into the LC7454 at raising edge of the SCKIN signal.

<Selection of slice line>

Maximum of 5 lines between line 10 and 25 can be selected at a time in a field. The LC7454 can slice 1x and 2x data

format signals.

Each D0 to D15 corresponds to line 10 to line 25. Set specific bit to ‘H’ to select the corresponding line.

Example: To select 15, 18, 19, 21 and 23 lines

Send D0 - D15 = [0000010011010100]

Note:

If more than 6 line are selected, data extraction will be made on the first 5 lines. The data on the 6th line and after

are not extracted.

The new data sent to the LC7454 takes effects from the next field.

C-Video

DATA

LN26

CE

IOC

SCKIN

D15

D14

D13

D12

D11

D10

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

L level

Line26