PXD20RM Datasheet, PDF (872/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

During the data phase of write transactions, the 8-bit alpha component of each 32-bit pixel is suppressed,
and the byte strobes of partially written double-words (first and last double-words depending on
alignment) are masked.
Table 22-11 and Table 22-12 show the color depth conversion mapping. The GFX2D address shown is
relative to the FIRST address and the physical address shown is relative to the BASE address.
During the data phase of read transactions, the programmable 8-bit ALPHA constant is returned in the
alpha component byte lane. If MODE[1] is set to enable color depth conversion, MODE[0] indicates
which byte is the alpha component (first or last byte) in the 32-bit pixel value.
Table 22-11. Color Depth Conversion mapping (MODE[0] = 0)
Offset
64-bit GFX2D Data
Address [7:0] [15:8 [23:1 [31:2 [39:3 [47:4 [55:4 [63:5
] 6] 4] 2] 0] 8] 6]
0x00 ^R0 ^G0 ^B0 ^A0 ^R1 ^G1 ^B1 ^A1
0x08 ^R2 ^G2 ^B2 ^A2 ^R3 ^G3 ^B3 ^A3
0x10 ^R4 ^G4 ^B4 ^A4 ^R5 ^G5 ^B5 ^A5
0x18 ^R6 ^G6 ^B6 ^A6 ^R7 ^G7 ^B7 ^A7
—
—
0x50 ^R20 ^G20 ^B20 ^A20 ^R21 ^G21 ^B21 ^A21
0x58 ^R22 ^G22 ^B22 ^A22 ^R23 ^G23 ^B23 ^A23
0x60 ^R24 ^G24 ^B24 ^A24 ^R25 ^G25 ^B25 ^A25
0x68 ^R26 ^G26 ^B26 ^A26 ^R27 ^G27 ^B27 ^A27
—
—
0xE0 ^R56 ^G56 ^B56 ^A56 ^R57 ^G57 ^B57 ^A57
0xE8 ^R58 ^G58 ^B58 ^A58 ^R59 ^G59 ^B59 ^A59
0xF0 ^R60 ^G60 ^B60 ^A60 ^R61 ^G61 ^B61 ^A61
0xF8 ^R62 ^G62 ^B62 ^A62 ^R63 ^G63 ^B63 ^A63
Offset
64-bit Physical RAM Data
Address [7:0] [15:8 [23:1 [31:2 [39:3 [47:4 [55:4 [63:5
] 6] 4] 2] 0] 8] 6]
0x00 ^R0 ^G0 ^B0 ^R1 ^G1 ^B1 ^R2 ^G2
0x08 ^B2 ^R3 ^G3 ^B3 ^R4 ^G4 ^B4 ^R5
0x10 ^G5 ^B5 ^R6 ^G6 ^B6 ^R7 ^G7 ^B7
0x18 ^R8 ^G8 ^B8 ^R9 ^G9 ^B9 ^R10 ^G10
—
—
0x38 ^B18 ^R19 ^G19 ^B19 ^R20 ^G20 ^B20 ^R21
0x40 ^G21 ^B21 ^R22 ^G22 ^B22 ^R23 ^G23 ^B23
0x48 ^R24 ^G24 ^B24 ^R25 ^G25 ^B25 ^R26 ^G26
0x50 ^B26 ^R27 ^G27 ^B27 ^R28 ^G28 ^B28 ^R29
—
—
0xA8 ^R56 ^G56 ^B56 ^R57 ^G57 ^B57 ^R58 ^G58
0xB0 ^B58 ^R59 ^G59 ^B59 ^R60 ^G60 ^B60 ^R61
0xB8 ^G61 ^B61 ^R62 ^G62 ^B62 ^R63 ^G63 ^B63
0xC0 ^R64 ^G64 ^B64 ^R65 ^G65 ^B65 ^R66 ^G66
22-12
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
Freescale Semiconductor