Epson S1D13706 - Table 8-9: LCD Bit-Per-Pixel Selection

Epson Research and Development
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Hardware Functional Specification S1D13706
Issue Date: 01/11/13 X31B-A-001-08
bits 2-0 Bit-per-pixel Select Bits [2:0]
These bits select the color depth (bit-per-pixel) for the displayed data for both the main
window and the PIP
+
window (if active).
Note
1, 2, 4 and 8 bpp color depths use the 18-bit LUT, allowing a maximum number of 256K
available colors on TFT panels. 16 bpp mode bypasses the LUT, allowing a maximum
of only 64K available colors.
bit 7 Display Data Word Swap
The display pipe fetches 32-bits of data from the display buffer. This bit enables the lower
16-bit word and the upper 16-bit word to be swapped before sending them to the LCD dis-
play. If the Display Data Byte Swap bit is also enabled, then the byte order of the fetched
32-bit data is reversed.
Note
For further information on byte swapping for Big Endian mode, see Section 14, “Big-
Endian Bus Interface” on page 146.
Table 8-9: LCD Bit-per-pixel Selection
Bit-per-pixel
Select Bits [2:0]
Color Depth (bpp)
Maximum Number of Available
Colors/Shades
Max. No. Of
Simultaneously
Displayed
Colors/Shades
Passive Panel
(Dithering On)
TFT Panel
000 1 bpp 64K/64 256K/64 2/2
001 2 bpp 64K/64 256K/64 4/4
010 4 bpp 64K/64 256K/64 16/16
011 8 bpp 64K/64 256K/64 256/64
100 16 bpp 64K/64 64K/64 64K/64
101, 110, 111 Reserved
Special Effects Register
REG[71h] Read/Write
Display Data
Word Swap
Display Data
Byte Swap
n/a
PIP
+
Window
Enable
n/a
SwivelView Mode Select
Bits 1-0
76543 210