Epson S1D13706 Technical Manual page 201

Epson Research and Development
Vancouver Design Center
REG[84h] Sub-Window X Start Position Register 0
Bit 7 Bit 6
REG[85h] Sub-Window X Start Position Register 1
n/a n/a
Note
Programming Notes and Examples
Issue Date: 01/02/23
Bit 5 Bit 4
n/a
These bits determine the X start position of the sub-window in relation to the origin of the
panel. Due to the S1D13706 SwivelView feature, the X start position may not be a
horizontal position value (only true in 0° and 180° SwivelView). For further information
on defining the value of the X Start Position registers, see Section 8.3, "Picture-In-Picture-
Plus Examples" on page 48.
The registers are also incremented differently based on the SwivelView orientation. For 0°
and 180° SwivelView the X start position is incremented by X pixels where X is relative to
the current color depth.
Table 8-1: 32-bit Address Increments for Color Depth
Bits-per-pixel (Color Depth)
For 90° and 270° SwivelView the X start position is incremented in 1 line increments.
In SwivelView 0°, these registers set the horizontal coordinates (x) of the sub-windows's
top left corner. Increasing values of x move the top left corner towards the right in steps of
32 ÷ bits-per-pixel (see Table 8-1: ).
Program the Sub-Window X Start Position registers so that
sub-window X start position registers = x ÷ (32 ÷ bits-per-pixel)
x must be a multiple of 32 ÷ bits-per-pixel.
In SwivelView 90°, these registers set the vertical coordinates (y) of the sub-window's top
right corner. Increasing values of y move the top right corner downward in steps of 1 line.
Program the Sub-Window X Start Position registers so that
sub-window X start position registers = y
Bit 3
n/a n/a
1 bpp
2 bpp
4 bpp
8 bpp
16 bpp
Bit 2 Bit 1
n/a Bit 9
Pixel Increment (X)
32
16
8
4
2
Page 41
Bit 0
Bit 8
S1D13706
X31B-G-003-03