SED1354 Datasheet, PDF (106/472 Pages) Epson Company – Color Graphics LCD/CRT Controller

Page 98
bits 4-2
bit 1
bit 0
Epson Research and Development
Vancouver Design Center
Number of Bits-Per-Pixel Select Bits [2:0]
These bits select the number of bits-per-pixel (bpp) for the displayed data.
Note
15 and 16-bpp modes bypass the LUT and are supported as 12-bpp on passive panels and 15/16-
bpp on TFT panels. These modes are not supported on CRT. See Figure 10-2: “15/16 Bit-Per-
Pixel Format Memory Organization,” on page 117 for a description of passive panel support.
Table 8-7: Number of Bits-Per-Pixel Selection
Number Of Bits-Per-Pixel Select Bits [2:0]
000
001
010
011
100
101
110-111
Number of Bits-Per-Pixel
1
2
4
8
15
16
Reserved
CRT Enable
This bit enables the CRT control signals.
Note
REG[02h] bit 1 must = 0 when in CRT only mode.
LCD Enable
This bit enables the LCD control signals. Programming this bit from a 0 to a 1 starts the LCD
power-on sequence. Programming this bit from a 1 to a 0 starts the LCD power-off sequence.
SED1354
X19A-A-002-16
Hardware Functional Specification
Issue Date: 99/05/18