
15 LCD CONTROLLER
124
EPSON
S1C38000 TECHNICAL MANUAL
bit 23
Display Blank
0
The LCD display pipeline is enabled.
1
The LCD display pipeline is disabled and all LCD data outputs are forced to zero
(i.e., the screen is blanked).
bit 22
Dithering Disable
0
Dithering on the passive LCD panel is enabled. This allows a maximum of 256K
colors (218) or 64 gray shades in 1/2/4/8 bpp mode. In 16 bpp mode, only 64K
colors (216) is allowed because the LUT is bypassed.
1
Dithering on the passive LCD panel is disabled. This allows a maximum of 4096
colors (212) or 16 gray shades.
The dithering algorithm provides more shades of each primary color.
Note: For a summary of the results of dithering for each color depth, see Table 15-13, “LCD Bit-
Per-Pixel Selection,” on page 125.
bit 20
Software Video Invert
0Video data is normal.
1Video data is inverted.
Note: Video data is inverted after the Look-Up Table.
bit 19
Picture-in-Picture Enable
This bit enables a Picture-in-Picture sub-window within the main window. The location
of the Picture-in-Picture sub-window within the landscape window is determined by the
Picture-in-Picture X Position register (LCD[58h]) and Picture-in-Picture Y Position
registers (LCD[5Ch]). The Picture-in-Picture sub-window has its own Display Start
Address register (LCD[50h]) and Memory Address Offset register (LCD[54h]). The
Picture-in-Picture sub-window shares the same color depth and SwivelViewTM
orientation as the main window.
bits 17–16 SwivelView Mode Select Bits [1:0]
These bits select different SwivelViewTM orientations:
bits 4–0
Bit-per-pixel Select Bits [4:0]
These bits select the color depth (bit-per-pixel) for the displayed data for both the main
window and the Picture-in-Picture sub-window (if active).
1, 2, 4 and 8 bpp modes use the 18-bit LUT, allowing maximum 256K colors. 16 bpp
mode bypasses the LUT, allowing only 64K colors.
Display Settings Register
LCD[10h]
Default = 0000 0000h
Read/Write
n/a
Display
Blank
Dithering
Disable
n/a
SW
Video
Invert
Picture-
in-Picture
Enable
n/a
SwivelView Mode
Select
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
n/a
Bits-per-pixel Select
(actual value: 1, 2, 4, 8, 16)
15
14
13
12
11
10
9876543210
Table 15-12 SwivelViewTM Mode Select Options
SwivelView Mode Select Bits
SwivelView Orientation
00
0° (Normal)
01
90°
10
180°
11
270°