S1D13704 Epson Electronics America, Inc., S1D13704 Datasheet - Page 89

• Manufacturer Part Number: S1D13704
• Description: LCD Controller
• Manufacturer: Epson Electronics America, Inc.

Epson Research and Development
Vancouver Design Center
12.2.1 How to Set Up Alternate SwivelView Mode
Hardware Functional Specification
Issue Date: 02/02/01
The following describes the register settings needed to set up Alternate SwivelView Mode
for a 160x240x8 bpp image.
• Select Alternate SwivelView Mode:
• The display refresh circuitry starts at pixel “B”, therefore the Screen 1 Start Address
• The Line Byte Count Register for SwivelView Mode must be set to the image width in
• Panning is achieved by changing the Screen 1 Start Address register:
REG[1Bh] bit 7 = 1 and bit 6 = 1
register must be programmed with the address of pixel “B”, or
bytes, i.e.
• Increment the register by 1 to pan horizontally by one byte, e.g. one pixel in 8 bpp
• Increment the register by the value in the Line Byte Count register to pan vertically by
mode
one line, e.g. add A0h to pan by one line in the example above
Where bpp is bits-per-pixel and bpb is bits-per-byte.
REG 0Dh REG 0Ch
Where bpb is bits-per-byte and bpp is bits-per-pixel.
REG 1Ch
=
----------------------------------------- -
8bpb
160
=
=
=
=
AddressOfPixelB
AddressOfPixelA
AddressOfPixelA
AddressOfPixelA
8bpp
=
160
-------- -
1
=
160
+
+
+


9Fh
ByteOffset
160pixels
--------------------------------------------
=
A0h
8bpb
8bpp


–
1
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S1D13704
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