S1D13705 Epson Electronics America, Inc., S1D13705 Datasheet - Page 120

• Manufacturer Part Number: S1D13705
• Description: S1d13705 Embedded Memory Lcd Controller
• Manufacturer: Epson Electronics America, Inc.

Page 28
5.2.1 Registers
S1D13705
X27A-G-002-02
Color Depth (bpp)
REG[0Ch] Screen 1 Display Start Address 0 (LSB)
REG[0Dh] Screen 1 Display Start Address 1 (MSB)
REG[10h] Screen 1 Display Start Address 2 (MSB)
Start Addr
Start Addr
Bit 15
Bit 7
n/a
1
2
4
8
Start Addr
Start Addr
Bit 14
Bit 6
n/a
Screen 1 Start Address Registers
These three registers form the seventeen bit screen 1 start address. Screen 1 is displayed
starting at the top left corner of the display.
In landscape mode these registers form the word offset to the first byte in display memory
to be displayed in the upper left corner of the screen. Changing these registers by one will
shift the display image 2 to 16 pixels, depending on the current color depth.
In portrait mode these registers form the offset to the display memory byte where screen 1
will start displaying. Changing these registers in portrait mode will result in a shift of 1 to
8 pixels depending on the color depth.
Refer to Table 5-1: “Number of Pixels Panned Using Start Address” to see the minimum
number of pixels affected by a change of one to these registers
Pixels per Word
Table 5-1: Number of Pixels Panned Using Start Address
16
8
4
2
Start Addr
Start Addr
Bit 13
Bit 5
n/a
Number of Pixels Panned
Start Addr
Start Addr
Landscape Mode
Bit 12
Bit 4
n/a
16
8
4
2
Start Addr
Start Addr
Bit 11
Bit 3
n/a
Pixels Per Byte
Start Addr
Start Addr
Bit 10
Bit 2
n/a
8
4
2
1
Epson Research and Development
Start Addr
Start Addr
Programming Notes and Examples
Bit 1
Bit 9
n/a
Number of Pixels Panned
Vancouver Design Center
Portrait Mode
Issue Date: 01/02/13
Start Addr
Start Addr
Start Addr
Bit 16
8
4
2
1
Bit 0
Bit 8