SED1354 Datasheet, PDF (159/472 Pages) Epson Company – Color Graphics LCD/CRT Controller

Epson Research and Development
Vancouver Design Center
Page 19
4 bpp Color
In 4 bpp color mode, the LUT is limited to a single 16 entry bank per color. The LUT bank select
bits have no effect in this mode.
The following table is a recommended set of data values to simulate the 16 colors in a VGA. The
second recommendation for this mode is to program the register values to data values equalling the
register number. (i.e. R[0] = 0, G[0]=0, B[0]=0, R[1]=1 ... R[F]=0Fh ...)
Table 3-10: Recommended LUT Values to Simulate VGA Default 16 Color Palette
Address
Red
00
00
01
00
02
00
03
00
04
0A
05
0A
06
0A
07
0A
Green
00
00
0A
0A
00
00
0A
0A
Blue
00
0A
00
0A
00
0A
00
0A
Address
Red
Green
Blue
08
00
00
00
09
00
00
0F
0A
00
0F
00
0B
00
0F
0F
0C
0F
00
00
0D
0F
00
0F
0E
0F
0F
00
0F
0F
0F
0F
8 bpp Color
In 8 bpp color mode, pixel bits [7:5] represent the red LUT index, bits [4:2] represent the green LUT
index, and bits [1:0] represent the blue LUT index. It is recommended that the three LUTs are
programmed according to the following format:
Table 3-11: Recommended LUT Values For 8 bpp Color Mode
Address
Red
Green
Blue
00
00
00
00
01
03
03
05
02
05
05
0A
03
07
07
0F
04
09
09
bank 1
05
0B
0B
bank 1
06
0D
0D
bank 1
07
0F
0F
bank 1
Programming Notes and Examples
Issue Date: 98/10/28
SED1354
X19A-G-002-06