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LCD Controller
19.3.7 Frame Rate Modulation Control (FRC)
Circuitry inside the LCDC generates intermediate gray-scale colors on the panel by adjusting the density of
zeroes and ones that appear over the frames. The LCDC can generate 16 simultaneous gray-scale levels.
19.3.8 Panel Interface Signals and Timing
The LCDC continuously provides pixel data to the LCD panel via the LCD panel interface. Panel interface
signals are illustrated in Figure 19-9.
19-10
Table 19-5. Gray Palette Density
Gray Code
(Hexadecimal)
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
Note: Overbars indicate repeating decimal numbers.
MC9328MX1 Reference Manual
Density
Density
(Decimal)
0
0
1/8
0.125
1/5
0.2
1/4
0.25
1/3
0.333
2/5
0.4
4/9
0.444
1/2
0.5
5/9
0.555
3/5
0.6
2/3
0.666
3/4
0.75
4/5
0.8
7/8
0.875
14/15
0.933
1
1
MOTOROLA
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