ssd1908 Solomon Systech Limited:, ssd1908 Datasheet - Page 144

• Manufacturer Part Number: ssd1908
• Description: Lcd Drivers,lcd Controllers
• Manufacturer: Solomon Systech Limited:

20 Floating Window Mode
Solomon Systech
Line Address Offset
This mode enables a floating window within the main display window. The floating window can be
positioned anywhere within the virtual display and is controlled through the Floating Window control
registers (REG[7Ch] through REG[91h]). The floating window retains the same color depth and display
orientation as the main window.
The following diagram shows an example of a floating window within a main window and the registers
used to position it.
Normal Orientation Mode
Floating Window Start X Position
The Main Window Line Address Offset register (REG[78h], REG[79h]) is based on the display
width and programmed using the following formula.
Figure 20-1 :
(REG[85h],REG[84h])
Main Window Line Address Offset bits 9-0
= Display width in pixels ÷ (32 ÷ bpp)
= 320 pixels ÷ (32 ÷ 8 bpp)
= 80 (50h)
panel’s origin
Floating Window with Display Rotate Mode disabled
Floating Window
Main Window
Floating Window End X Position
Floating Window Start Y Position
Oct 2003
(REG[8Dh],REG[8Ch])
(REG[89h],REG[88h])
P 134/134 Rev 1.0
Floating Window End Y Position
(REG[91h],REG[90h])
SSD1908