NT68275 View Datasheet(PDF) - Novatek Microelectronics

Part Name

Description

Manufacturer

NT68275

IIC Bus Controlled On-Screen Display

Novatek Microelectronics 

NT68275

OSD Screen Position Control Registers: Row 15, Column 12 - 13

Row 15

Column 12

7

6

5

4

3

2

1

0

VPOS

MSB

LSB

Vertical Position Adjustment

Bit 7-0: VPOS - These bits determine the vertical starting position for the character display. It is the vertical delay

starting from the leading edge of VFLB. The unit of this setting is 4 horizontal lines and the equation is

defined as below:

Vertical delay = (Vpos * 4 +1) * Horizontal line

. The default value of it is 4 ($04) after power on.

Row 15

Column 13

7

6

5

4

3

2

1

0

MSB

HPOS

LSB

Horizontal Position Adjustment

Bit 7-0: HPOS – These bits determine the horizontal starting position for the character display. It is the

horizontal delay starting from the leading edge of HFLB. The unit of this setting is 6 dots movement shift

to right on the monitor screen and the equation is defined as below:

Horizontal delay = (Hpos * 6 + 49) / P.R.

where the P.R. (pixel rate) is defined by the HDR & Horizontal Frequency.

P.R. (Pixel Rate) = HDR * 12 * FreqHFLB

Refer the HDR control register at row 15 / column 15 for the P.R. setting.

The default value of these bit is 15 ($ 0F) after power on.

15

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