GXLV Datasheet, PDF (137/247 Pages) National Semiconductor (TI) – Geode™ GXLV Processor Series Low Power Integrated x86 Solutions

Integrated Functions (Continued)
.
Table 4-25. TFT Panel Display Modes (Note 1)
Resolution
Simultaneous
Colors
Refresh
Rate
(Hz)
DCLK
Rate
(MHz)
(Note 2)
PCLK
Rate
(MHz)
(Note 3)
Panel
Type
Maximum Displayed
Colors (Note 4)
640x480
(Note 5)
8-bpp
60
256 colors out of a
palette of 256
50.35
25.175
9-bit
12-bit
18-bit
57³ = 185,193
61³ = 226,981
4³ = 262,144
800x600
(Note 5)
16-bpp
60
64 KB colors
5-6-5
8-bpp
60
256 colors out of a
palette of 256
50.35
80.0
25.175
40.0
9-bit
12-bit
18-bit
9-bit
12-bit
18-bit
29x57x29 = 47,937
31x61x31 = 58,621
32x64x32 = 65,535
57³ = 185,193
61³ = 226,981
64³ = 262,144
16-bpp
60
64 KB Colors
5-6-5
1024x768
8-bpp
60
256 colors out of a
palette of 256
80.0
40.0 9-bit
29x57x29 = 47,937
12-bit
31x61x31 = 58,621
18-bit
32x64x32 = 65,535
65
65.0
9-bit/18-I/F 57³ = 185,193
16-bpp
64 KB colors
5-6-5
60
65
65.0 9-bit/18-I/F 29x57x29 = 47,937
Notes: 1. This list is not meant to be an complete list of all the possible supported TFT display modes.
2. DCLK is the input clock from the Geode I/O companion. In some cases, DCLK is doubled to keep the
Geode I/O companion’s PLL in a desired operational range.
3. PCLK is the graphics output clock to the Geode I/O companion.
4. 9-bit and 12-bit panels use FRM and dither to increase displayed colors. (See Section 4.5.5 “Dither and
Frame Rate Modulation” on page 136.)
5. All 640x480 and 800x600 modes can be run in simultaneous display with CRT
Revision 1.1
137
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