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