Registers - Epson S1D13706 Technical Manual

Page 32

7.1 Registers

REG[71h] Special Effects Register
Display Data Display Data
Word Swap Byte Swap
REG[74h] Main Window Display Start Address Register 0
Bit 7 Bit 6
REG[75h] Main Window Display Start Address Register 1
Bit 15 Bit 14
REG[76h] Main Window Display Start Address Register 2
n/a n/a
S1D13706
X31B-G-003-03
These are the registers which control the SwivelView feature.
Sub-Window
n/a
Enable
The SwivelView modes are selected using the SwivelView Mode Select Bits [1:0]. The
combinations of these bits provide the following rotations.
Table 7-1: SwivelView Enable Bits
SwivelView Enable
Bit 1
0
0
1
1
Bit 5 Bit 4
Bit 13 Bit 12
n/a
These registers represent a dword address which points to the start of the main window
image in the display buffer. An address of 0 is the start of the display buffer. For the
following SwivelView mode descriptions, the desired byte address is the starting display
address for the main window image, and panel width and panel height refer to the physical
panel dimensions.
Note
Truncate all fractional values before writing to the address registers.
In SwivelView 0°, program the start address
= desired byte address ÷ 4.
In SwivelView 90°, program the start address
= ((desired byte address + (panel height × bpp ÷ 8)) ÷ 4) - 1.
n/a
SwivelView Enable SwivelView
Bit 0 Orientation
0 0° (normal)
1
0
1
Bit 3
Bit 11
n/a n/a
Epson Research and Development
Vancouver Design Center
SwivelView
n/a Mode Select
Bit 1
90°
180°
270°
Bit 2 Bit 1
Bit 10 Bit 9
n/a n/a
Programming Notes and Examples
Issue Date: 01/02/23
SwivelView
Mode Select
Bit 0
Bit 0
Bit 8
Bit 16