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Page 42
REG[88h] Sub-Window Y Start Position Register 0
Bit 7
Bit 6
REG[89h] Sub-Window Y Start Position Register 1
n/a
n/a
S1D13706
X31B-G-003-03
In SwivelView 180°, these registers set the horizontal coordinates (x) of the sub-window's
bottom right corner. Increasing values of x move the bottom right 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 = (panel width - x) ÷ (32 ÷ bits-per-pixel)
Note
panel width - x must be a multiple of 32 ÷ bits-per-pixel.
In SwivelView 270°, these registers set the vertical coordinates (y) of the sub-window's
bottom left corner. Increasing values of y move the bottom left corner downwards in steps
of 1 line.
Program the Sub-Window X Start Position registers so that
sub-window X start position registers = panel width - y
•
Bit 5
Bit 4
n/a
These bits determine the Y start position of the sub-window in relation to the origin of the
panel. Due to the S1D13706 SwivelView feature, the Y start position may not be a vertical
position value (only true in 0° and 180° SwivelView). For further information on defining
the value of the Y Start Position registers, see Section 8.3, "Picture-In-Picture-Plus
Examples" on page 48.
The registers is also incremented differently based on the SwivelView orientation. For 0°
and 180° SwivelView the Y start position is incremented in 1 line increments. For 90° and
270° SwivelView the Y start position is incremented by Y pixels where Y is relative to the
current color depth.
Table 8-2: 32-bit Address Increments for Color Depth
Bits-Per-Pixel (Color Depth)
Bit 3
n/a
n/a
1 bpp
2 bpp
4 bpp
8 bpp
16 bpp
Epson Research and Development
Vancouver Design Center
Bit 2
Bit 1
n/a
Bit 9
Pixel Increment (Y)
32
16
8
4
2
Programming Notes and Examples
Issue Date: 01/02/23
Bit 0
Bit 8
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