Table 4-4. Palette Data Storage (Lh79525 With 12-Bit Clcdc); Table 4-5. Palette Data Storage (Lh79524 With 16-Bit Clcdc); Palette Ram - Sharp LH79524 User Manual

Color Liquid Crystal Display Controller

4.3.6 Palette RAM

The CLCDC includes a 256 × 16 bit dual-port RAM-based palette. The least-significant bit
of the serialized pixel data selects the upper or lower half of the palette RAM, based on the
Byte Ordering Mode. Table 4-4 and Table 4-5 show the representations of each word.
• One port of the dual-port palette RAM is used as a Read/Write port and is connected to
the AHB slave interface. Palette entries can be written and verified through this port.
• The second port of the dual-port palette RAM is used as a Read Only port and is
connected to the unpacker and grayscaler.
• In 12 and 16 bpp TFT mode, the palette is bypassed and the output of the pixel serializer
is used as the TFT panel data.
4-8

Table 4-4. Palette Data Storage (LH79525 with 12-Bit CLCDC)

BIT NAME*
31 ///
30:27 MB[3:0]
26 ///
25:22 MG[3:0]
21 ///
20:17 MR[3:0]
16:15 ///
14:11 LB[3:0]
10 ///
9:6 LG[3:0]
5 ///
4:1 LR[3:0]
0 ///
NOTE: *Blue and red palette data can be swapped by programming CTRL:BGR.

Table 4-5. Palette Data Storage (LH79524 with 16-Bit CLCDC)

BIT NAME*
31 I
30:26 MB[4:0]
25:21 MG[4:0]
20:16 MR[4:0]
15 I
14:10 LB[4:0]
9:5 LG[4:0]
4:0 LR[4:0]
NOTE: *Blue and red palette data can be swapped by programming CTRL:BGR.
Version 1.0
LH79524/LH79525 User's Guide
DESCRIPTION
Unused
Most Significant Blue palette data
Unused
Most Significant Green palette data
Unused
Most Significant Red palette data
Unused
Least Significant Blue palette data
Unused
Least Significant Green palette data
Unused
Least Significant Red palette data
Unused
DESCRIPTION
Intensity
Most Significant Blue palette data
Most Significant Green palette data
Most Significant Red palette data
Intensity
Least Significant Blue palette data
Least Significant Green palette data
Least Significant Red palette data