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1.7.7. LCD Big Endian (LcdBE)

The LCD Big Endian (LcdBE) bit selects whether the LCD controller views external memory organization or the frame buffer as big or little endian. When LcdBE=0, little endian mode is selected, and pixel data is organized within the off-chip frame buffer. This is shown between Figure 1.7 and Figure 1.10. Pixels are packed into words starting with the least significant nibble, byte or half-word. When LcdBE=1, big endian mode is selected and pixel data is organized in memory in individual words starting with the most significant nibble, byte or half-word. The big/little endian select bit also effects the ordering of palette buffer entries in the externalframe buffer. When LcdBE=0, half-word palette entries are packed into words starting with the least significant half-word. When LcdBE=1, palette entries are packed into half-words starting with the most significant half-word.

Note

The LcdBE does not affect the ordering of the 4-bit red/green/blue bit-fields, the 4-bit mono field within each 16-bit palette entry or the 2 bit-per-pixel (BPP) field contained with palette entry 0.