User`s manual

6: CRT CONSIDERATIONS
2-24 EPSON S1D13504 PROGRAMMING NOTES
AND EXAMPLES (S19A-G-002-06)
6.1.2 Simultaneous Display
For Simultaneous Display, only 4/8-bit single passive LCD panels and 9-bit active matrix TFT pan-
els can be used. Simultaneous Display requires that the panel timing be taken from the CRT timing
registers and thereby limits the number of useful modes supported.
The configuration of both CRT and panel must not violate the limitations as described in “Clocking”
(Chapter 11) of the “S1D13504 Hardware Functional Specification”. For example, on a 640x480
single panel, the maximum values of both the panel pixel clock and CRT frame rate are 40 MHz and
85 Hz respectively. When pixel depth is less than 8 bpp, the RAMDAC is programmed with the
same values as the Look-Up Table. The S1D13504 does not support Simultaneous Display in a color
depth greater than 8 bpp.
When color depth is 8 bpp, the RAMDAC should be programmed to mimic the recommended values
in the Look-Up Table as described in Section 3.3. The recommendation is that the intensities of the
three prime colors (RGB) be distributed evenly. Table 6-3 shows the recommended RAMDAC pal-
ette data for 8 bpp Simultaneous Display. Table 6-4 shows the related register data for some possible
CRT options with an 8-bit Color 640x480 single passive panel.
Table 6-3 8 bpp Recommended RAMDAC Palette Data for Simultaneous Display
Address R G B Address R G B Address R G B Address R G B
00 00 00 00 20 09 00 00 40 12 00 00 60 1B 00 00
01 00 00 15 21 09 00 15 41 12 00 15 61 1B 00 15
02 00 00 2A 22 09 00 2A 42 12 00 2A 62 1B 00 2A
03 00 00 3F 23 09 00 3F 43 12 00 3F 63 1B 00 3F
04 00 09 00 24 09 09 00 44 12 09 00 64 1B 09 00
05 00 09 15 25 09 09 15 45 12 09 15 65 1B 09 15
06 00 09 2A 26 09 09 2A 46 12 09 2A 66 1B 09 2A
07 00 09 3F 27 09 09 3F 47 12 09 3F 67 1B 09 3F
08 00 12 00 28 09 12 00 48 12 12 00 68 1B 12 00
09 00 12 15 29 09 12 15 49 12 12 15 69 1B 12 15
0A 00 12 2A 2A 09 12 2A 4A 12 12 2A 6A 1B 12 2A
0B 00 12 3F 2B 09 12 3F 4B 12 12 3F 6B 1B 12 3F
0C 00 1B 00 2C 09 1B 00 4C 12 1B 00 6C 1B 1B 00
0D 00 1B 15 2D 09 1B 15 4D 12 1B 15 6D 1B 1B 15
0E 00 1B 2A 2E 09 1B 2A 4E 12 1B 2A 6E 1B 1B 2A
0F 00 1B 3F 2F 09 1B 3F 4F 12 1B 3F 6F 1B 1B 3F
10 00 24 00 30 09 24 00 50 12 24 00 70 1B 24 00
11 00 24 15 31 09 24 15 51 12 24 15 71 1B 24 15
12 00 24 2A 32 09 24 2A 52 12 24 2A 72 1B 24 2A
13 00 24 3F 33 09 24 3F 53 12 24 3F 73 1B 24 3F
14 00 2D 00 34 09 2D 00 54 12 2D 00 74 1B 2D 00
15 00 2D 15 35 09 2D 15 55 12 2D 15 75 1B 2D 15
16 00 2D 2A 36 09 2D 2A 56 12 2D 2A 76 1B 2D 2A
17 00 2D 3F 37 09 2D 3F 57 12 2D 3F 77 1B 2D 3F
18 00 36 00 38 09 36 00 58 12 36 00 78 1B 36 00
19 00 36 15 39 09 36 15 59 12 36 15 79 1B 36 15
1A 00 36 2A 3A 09 36 2A 5A 12 36 2A 7A 1B 36 2A
1B 00 36 3F 3B 09 36 3F 5B 12 36 3F 7B 1B 36 3F
1C 00 3F 00 3C 09 3F 00 5C 12 3F 00 7C 1B 3F 00
1D 00 3F 15 3D 09 3F 15 5D 12 3F 15 7D 1B 3F 15
1E 00 3F 2A 3E 09 3F 2A 5E 12 3F 2A 7E 1B 3F 2A
1F 00 3F 3F 3F 09 3F 3F 5F 12 3F 3F 7F 1B 3F 3F