39.4.2.1.1 4-bit Alpha Channel with 4-bit Indexed Color

Table 39-1. 4-bit Alpha Channel 4-bit Indexed Color Memory Mapping, Little Endian Organization
Mem. addr.	0x3								0x2								0x1								0x0
Bit	31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Pixel A4IDX4	A3				IDX3				A2				IDX2				A1				IDX1				A0				IDX0

The 4-bit Indexed Color mode uses the Color Look-Up Table (CLUT) defined by the GFX2D_CFGx.IDXCX bit.

Table 39-2. 32-bpp Final Color Used at the Input of the Alpha Blending Stage, with Alpha Expansion
Mem. addr.	0x3								0x2								0x1								0x0
Bit	31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
1st pixel	A0				A0				CLUT[IDX0].R								CLUT[IDX0].G								CLUT[IDX0].B
2nd pixel	A1				A1				CLUT[IDX1].R								CLUT[IDX1].G								CLUT[IDX1].B
3rd pixel	A2				A2				CLUT[IDX2].R								CLUT[IDX2].G								CLUT[IDX2].B
4th pixel	A3				A3				CLUT[IDX3].R								CLUT[IDX3].G								CLUT[IDX3].B

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