Page 56
Epson Research and Development
Vancouver Design Center
S1D13704
Hardware Functional Specification
X26A-A-001-04
Issue Date: 01/02/08
bits 7-6
Bit-Per-Pixel Bits [1:0]
These bits select the color or gray-shade depth (Display Mode).
bit 5
High Performance (Landscape Modes Only)
When this bit = 0, the internal Memory clock (MCLK) is a divided-down version of the
Pixel clock (PCLK). The denominator is dependent on the bit-per-pixel mode - see the
table below.
When this bit = 1, MCLK is fixed to the same frequency as PCLK for all bit-per-pixel
modes. This provides a faster screen update performance in 1, 2, 4 bit-per-pixel modes, but
also increases power consumption. This bit can be set to 1 just before a major screen
update, then set back to 0 to save power after the update. This bit has no effect in Swivel-
View mode. Refer to REG[1Bh] SwivelView Mode Register on page 68 for SwivelView
mode clock selection.
REG[02h] Mode Register 1
Address = FFE2h
Read/Write.
Bit-Per-Pixel
Bit 1
Bit-Per-Pixel
Bit 0
High
Performance
Input Clock
divide
(CLKI/2)
Display Blank
Frame
Repeat
Hardware
Video Invert
Enable
Software
Video Invert
Table 8-2: Gray Shade/Color Mode Selection
Color/Mono
REG[01h] bit 6
Bit-Per-Pixel Bit 1
REG[02h] bit 7
Bit-Per-Pixel Bit 0
REG[02h] bit 6
Display Mode
0
0
0
2 Gray shade
1 bit-per-pixel
1
4 Gray shade
2 bit-per-pixel
1
0
16 Gray shade
4 bit-per-pixel
1
reserved
1
0
0
2 Colors
1 bit-per-pixel
1
4 Colors
2 bit-per-pixel
1
0
16 Colors
4 bit-per-pixel
1
256 Colors
8 bit-per-pixel
Table 8-3: High Performance Selection
High Performance
BPP Bit 1
BPP Bit 0
Display Modes
0
0
0
MClk = PClk/8
1 bit-per-pixel
1
MClk = PClk/4
2 bit-per-pixel
1
0
MClk = PClk/2
4 bit-per-pixel
1
MClk = PClk
8 bit-per-pixel
1
X
X
MClk = PClk
*