S1D13503 Epson Electronics America, Inc., S1D13503 Datasheet - Page 145

• Manufacturer Part Number: S1D13503
• Description: S1d13503 Graphics Lcd Controller
• Manufacturer: Epson Electronics America, Inc.

Epson Research and Development
Vancouver Design Center
Programming Notes and Examples
Issue Date: 01/01/30
6.
7.
8.
Notes
When using a dual panel, the Screen 1 Display Line Count Register is ignored by the S1D13503. Once the two Display
Start Address Registers are programmed, the top panel will show the beginning of image 1, and the bottom panel will show
the beginning of image 2 (see Figure 18).
Determine the display memory location for image 2.
Place image 2 immediately after image 1 (see Figure 16). Assign the starting address for image 2 as follows:
Note that if the image 2 address is larger than D000:FFFFh, then switch to bank 1, reset the segment to D000h, and
keep the offset. For example, if the image 2 address were {D001:9200h, bank 0}, then this address must be changed
to {D000:9200h, bank 1}.
Program the Screen 2 Display Start Address Register to point to the beginning of image 2.
Image 2 is placed right after image 1, as shown below:
AUX[08h] = 00h
AUX[09h] = 4Bh
Write both image 1 and image 2 to their respective locations in display memory.
Screen 2 Display Start Address
image 2 address
Figure 18: 640 x 480 Dual Panel For Split Screen
Image 1 always has half the total number of
Screen 1 Display Line Count is ignored;
Scan Line 239
Scan Line 240
Scan Line 479
=
=
=
Scan Line 0
scan lines (240 in this example).
base display memory address
D000:0000h, bank 0
D000:9600h, bank 0
=
=
...
...
Screen 1 Display Start Address
0000h
+
9600h
-------------- -
2
=
4B00h
+
0000:9600h
Image 1
Image 2
+
size of image 1
+
size of image 1 in bytes
--------------------------------------------------------
2 bytes per word
X18A-G-002-06
S1D13503
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