Table 8-3: Maximum Value Of Line Byte Count Register - 8-Bit Display Memory Interface; Table 8-4: Maximum Value Of Line Byte Count Register - 16-Bit Display Memory Interface; Table 8-5: Power Save Mode Selection - Epson S1D13503 Technical Manual

Page 64
AUX[03] Mode Register 1
I/O address = 0011b, Read/Write
PS PS
Bit 1 Bit 0
bits 7-6
bit 5
bit 4
S1D13503
X18A-A-001-08
Downloaded from Elcodis.com electronic components distributor
The following two tables summarize the maximum value of the Line Byte Count Register for different
display modes and display memory interface.

Table 8-3: Maximum Value of Line Byte Count Register - 8-Bit Display Memory Interface

Display Modes
black-and-white (BW)
4-level gray shade / 4 colors
16-level gray shade / 16 colors

Table 8-4: Maximum Value of Line Byte Count Register - 16-Bit Display Memory Interface

Display Modes
black-and-white (BW)
4-level gray shade / 4 colors
16-level gray shade / 16 colors
256 colors
LCD Signal LUT
State Bypass
PS Bits [1:0]
Selects the Power Save Modes as shown in the following table. The PS bits [1:0] go low on RESET.

Table 8-5: Power Save Mode Selection

PS1 PS0 Mode Activated
0 0 Normal Operation
0 1 Power Save Mode 1
1 0 Power Save Mode 2
1 1
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.
Maximum Value of
Line Byte Count Register
0FFh
0FFh
1FFh
Maximum Value of
Line Byte Count Register
0FFh
0FFh
0FFh
1FFh
LCD Data BW /
Width Bit 1 256 colors
Reserved
Epson Research and Development
Vancouver Design Center
Corresponding Maximum
Number of Pixels in One
Display Line
256 x 8 = 2048
256 x 4 = 1024
512 x 2 = 1024
Corresponding Maximum
Number of Pixels in One
Display Line
256 x 16 = 4096
256 x 8 = 2048
256 x 4 = 1024
512 x 2 = 1024
Line Byte
Color Mode
Count Bit 8
Hardware Functional Specification
Issue Date: 01/01/29