S1D13503 Epson Electronics America, Inc., S1D13503 Datasheet - Page 70

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

Page 62
bit 7
bit 6
bit 5
.
bit 4
bit 3
S1D13503
X18A-A-001-08
AUX[01] Mode Register 0
I/O address = 0001b, Read/Write.
DISP
Panel
DISP
This bit selects display on or off. When this bit = 0, Display OFF is selected (LD0-3 and UD0-3 are forced
to 0 ). When this bit = 1, Display ON is selected. This bit goes low on RESET.
Panel
This bit selects the LCD panel configuration (single or dual). When this bit = 0, Single LCD panel drive is
selected. When this bit = 1 Dual LCD panel drive is selected. This bit goes low on RESET.
Mask XSCL
XSCL is automatically masked during the horizontal non-display period if any of the following criteria is
met:
XSCL will not be masked during the horizontal non-display period if color panel is not selected, AUX[0C]
= 00h and this bit = 0.
LCDE
The state of this pin determines the state of output pin 82, LCDENB, and is intended for control of an
external LCDBIAS power supply. However, this pin can be used as a general I/O pin if desired. When
LCDE = 0, LCDENB is forced low. When LCDE = 1, LCDENB is forced high. LCDE goes low on
RESET.
Gray Shade/Color
In gray shade display modes, this bit selects between 16-level or 4-level gray shade display. When this bit
= 1, 16 gray shades are displayed (4 bits/pixel). When this bit = 0, 4 gray shades of a possible 16 are dis-
played (2 bits/pixel).
In color display modes, this bit selects between 16 color or 4 color display. When this bit = 1, 16 colors are
displayed out of a possible of 4096 colors (4 bits/pixel). When this bit = 0, 4 colors are displayed out of a
possible of 4096 colors (2 bits/pixel).
This bit is ignored when either black-and-white (BW) or 256 color mode is selected (AUX[03] bit 2 = 1).
This bit goes low on RESET.
• AUX[0C] value is greater than 00h.
• Color panel is selected.
• This bit (AUX[01] bit 5) = 1.
256 Colors
16 Colors
16 Grays
4 Colors
Display
4 Grays
Modes
BW
Table 8-1: Gray Shade/Color Mode Selection
Mask
XSCL
Gray Shade/
AUX[01] bit 3
don’t care
don’t care
Color
1
0
1
0
LCDE
AUX[03] bit 2
256 Colors
BW/
1
0
0
0
0
1
Gray Shade /
Color
Color Mode
AUX[03] bit 1
1
1
1
0
0
0
LCD Data
Width Bit 0
Hardware Functional Specification
Epson Research and Development
Memory
Interface
Vancouver Design Center
Issue Date: 01/01/29
RAMS