ST STM32F405 Reference Manual page 505

RM0090
16.7.17 LTDC Layerx Color Keying Configuration Register (LTDC_LxCKCR)
(where x=1..2)
This register defines the color key value (RGB), which is used by the Color Keying.
Address offset: 0x90 + 0x80 x (Layerx -1), Layerx = 1 or 2
Reset value: 0x0000 0000
31 30 29 28
15 14 13 12
CKGREEN[7:0]
Bits 31:24 Reserved, must be kept at reset value
Bits 23:16 CKRED[7:0]: Color Key Red value
Bits 15:8 CKGREEN[7:0]: Color Key Green value
Bits 7:0 CKBLUE[7:0]: Color Key Blue value
16.7.18 LTDC Layerx Pixel Format Configuration Register (LTDC_LxPFCR)
(where x=1..2)
This register defines the pixel format which is used for the stored data in the frame buffer of
a layer. The pixel data is read from the frame buffer and then transformed to the internal
format 8888 (ARGB).
Address offset: 0x94 + 0x80 x (Layerx -1), Layerx = 1 or 2
Reset value: 0x0000 0000
31 30 29 28
15 14 13 12
27 26 25
Reserved
11 10 9
rw
27 26 25
11 10 9
Reserved
24 23 22 21
rw rw rw
8 7 6
rw rw rw
24 23 22 21
Reserved
8 7 6
RM0090 Rev 18
LCD-TFT controller (LTDC)
20 19 18
CKRED[7:0]
rw rw rw
5 4 3 2
CKBLUE[7:0]
rw rw rw
20 19 18
5 4 3 2
rw
17 16
rw rw
1 0
rw rw
17 16
1 0
PF[2:0]
rw rw
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