S1D13503 Epson Electronics America, Inc., S1D13503 Datasheet - Page 73

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

Epson Research and Development
Vancouver Design Center
bit 3
bit 2
bit 1
bit 0
bits 7-0
Hardware Functional Specification
Issue Date: 01/01/29
AUX[04] Total Display Line Count Register (LSB) (Vertical Total)
I/O address = 0100b, Read/Write.
Total Disp.
Line Count
Bit 7
.
Total Disp.
Line Count
Bit 6
LCD Data Width Bit 1
Together with LCD Data Width bit 0 (AUX[01] bit 2), this bit selects different display data formats. See
Table 8-2, “LCD Data Width,” on page 63 for details. This bit goes low on RESET.
BW / 256 colors
In BW/gray shade display modes, when this bit = 1, black-and-white (BW) mode is selected. When this bit
= 0, either 4-level gray shade mode or 16-level gray shade mode is selected.
In color display modes, when this bit = 1, 256 color mode is selected. When this bit = 0, either 4 color
mode or 16 color mode is selected. See Table 8-1, “Gray Shade/Color Mode Selection,” on page 62 for
details. This bit goes low on RESET.
Color Mode
When this bit = 1, color display modes are selected. When bit = 0, BW/gray shade display modes are
selected. See Table 8-1, “Gray Shade/Color Mode Selection,” on page 62 for details. This bit goes low on
RESET.
Line Byte Count Bit 8
This is the MSB of the number of bytes to be fetched per display line minus 1 (see AUX[02]). This bit only
has effect when in either 16 colors/gray shades with 8-bit memory interface or 256 colors with 16-bit
memory interface.
Total Display Line Count Bits [7:0]
These are the 8 LSB of the 10 bit Total Display Line Count and represent the number of scan lines -1, to a
maximum value of 3FFh or 1024 scan lines.
In single panel mode:
In dual panel mode:
Note that the value programmed partially determines the frame period, and hence affects display duty
cycle. Bits 8 and 9 are located in the following register (AUX[05]).
Total Disp.
Line Count
Bit 5
TotalDisplayLineCount
TotalDisplayLineCount
Total Disp.
Line Count
Bit 4
Total Disp.
Line Count
Bit 3
=
=
NumberOfDisplayLines 1
NumberOfDisplayLines
---------------------------------------------------------------
Total Disp.
Line Count
Bit 2
2
Total Disp.
Line Count
Bit 1
–
–
1
Total Disp.
Line Count
Bit 0
X18A-A-001-08
S1D13503
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