S1D13700 Datasheet, PDF (83/134 Pages) Epson Company – Embedded Memory Graphics LCD Controller

Epson Research and Development
Vancouver Design Center
Page 83
1 ^SAD
SAD +1
SAD + 2
2 ^{SAD + AP SAD + AP}
+1
3 SAD + 2AP
•
•
•
•
•
•
•
•
SAD + AP
+2
SAD + C/R
SAD + AP
+ C/R
Line 1
SAD
SAD +1
SAD + 2
AP
SAD + C/R
SAD + AP
Line 2
SAD + AP + 1
AP
SAD + AP + C/R
Line 3
SAD + 2AP
REG[03h] bits 7-0
Where:
SAD = start address of the screen block
AP = horizontal address range (REG[06h], REG[07h])
C/R = number of character bytes per row (REG[03h])
Note
Assumes REG[00h] bit 3 = 0, REG[01h] bits 3-0 = 8
Figure 12-5 Display Addressing in Graphics Mode Example
Note
In 1 bpp, one bit of display memory corresponds to one pixel. Therefore, 1 byte of dis-
play memory corresponds to 8 pixels. In 2 bpp, 1 byte corresponds to 4 pixels. In 4 bpp,
1 byte corresponds to 2 pixels.
Hardware Functional Specification
Issue Date: 2004/01/06
Revision 1.0
S1D13700
X42A-A-001-00