S1D13503 Epson Electronics America, Inc., S1D13503 Datasheet - Page 72

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

Page 64
bits 7-6
bit 5
bit 4
S1D13503
X18A-A-001-08
AUX[03] Mode Register 1
I/O address = 0011b, Read/Write
PS
Bit 1
PS
Bit 0
The following two tables summarize the maximum value of the Line Byte Count Register for different
display modes and display memory interface.
PS Bits [1:0]
Selects the Power Save Modes as shown in the following table. The PS bits [1:0] go low on RESET.
Refer to Power Save Modes on page 77 for a complete Power Save Mode description.
LCD Signal State
When this bit = 0, all LCD interface signals are forced low during Power Save modes. When this bit = 1,
all LCD interface signals are forced to a high impedance (Hi-Z) state during Power Save modes. This bit
goes low on RESET.
LUT Bypass
When the LUT Bypass bit = 0, the Look-Up Table is used for display data output in gray shade modes.
When this bit = 1, the Look-Up Table is bypassed for display data output in gray shade modes (for power
save purposes). There is no effect on changing this bit in BW and color modes. In BW display mode, the
Look-Up Table is always bypassed and in color display mode the Look-Up Table cannot be bypassed. The
LUT Bypass bit goes low on RESET.
16-level gray shade / 16 colors
16-level gray shade / 16 colors
4-level gray shade / 4 colors
4-level gray shade / 4 colors
Table 8-4: Maximum Value of Line Byte Count Register - 16-Bit Display Memory Interface
Table 8-3: Maximum Value of Line Byte Count Register - 8-Bit Display Memory Interface
PS1
black-and-white (BW)
black-and-white (BW)
0
0
1
1
Display Modes
Display Modes
Table 8-5: Power Save Mode Selection
LCD Signal
State
256 colors
PS0
0
1
0
1
LUT
Bypass
Power Save Mode 1
Power Save Mode 2
Normal Operation
Mode Activated
Reserved
Line Byte Count Register
Line Byte Count Register
Maximum Value of
Maximum Value of
LCD Data
Width Bit 1
0FFh
0FFh
1FFh
0FFh
0FFh
0FFh
1FFh
BW /
256 colors
Corresponding Maximum
Corresponding Maximum
Color Mode
Number of Pixels in One
Number of Pixels in One
Hardware Functional Specification
Epson Research and Development
256 x 16 = 4096
256 x 8 = 2048
256 x 4 = 1024
512 x 2 = 1024
256 x 8 = 2048
256 x 4 = 1024
512 x 2 = 1024
Display Line
Display Line
Vancouver Design Center
Line Byte
Count Bit 8
Issue Date: 01/01/29