Register Programming - Epson S1D13706 Technical Manual

Epson Research and Development
Vancouver Design Center

12.2.1 Register Programming

Hardware Functional Specification
Issue Date: 01/11/13
Enable 90° SwivelView™ Mode
Set SwivelView™ Mode Select bits (REG[71h] bits 1:0) to 01.
Display Start Address
The display refresh circuitry starts at pixel "B", therefore the Main Window Display Start
Address registers (REG[74h], REG[75h], REG[76h]) must be programmed with the
address of pixel "B". To calculate the value of the address of pixel "B" use the following
formula (assumes 8 bpp color depth).
Main Window Display Start Address bits 16:0
= ((image address + (panel height x bpp ÷ 8)) ÷ 4) - 1
= ((0 + (320 pixels x 8 bpp ÷ 8)) ÷ 4) -1
= 79 (4Fh)
Line Address Offset
The Main Window Line Address Offset registers (REG[78h], REG[79h]) is based on the
display width and programmed using the following formula.
Main Window Line Address Offset bits 9:0
= display width in pixels ÷ (32 ÷ bpp)
= 320 pixels ÷ 32 ÷ 8 bpp
= 80 (50h)
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