The RGB color space format is required for viewing images on a display screen preview, and the YCbCr color space format is required for encoding.
All the sensors do not output the YCbCr or RGB components in the same order. The ISI allows the user to program the same component order as the sensor, reducing software treatments to restore the right format.
Table 1. Data Ordering in YCbCr Mode
| Mode |
Byte 0 |
Byte 1 |
Byte 2 |
Byte 3 |
| Default |
Cb(i) |
Y(i) |
Cr(i) |
Y(i+1) |
| Mode 1 |
Cr(i) |
Y(i) |
Cb(i) |
Y(i+1) |
| Mode 2 |
Y(i) |
Cb(i) |
Y(i+1) |
Cr(i) |
| Mode 3 |
Y(i) |
Cr(i) |
Y(i+1) |
Cb(i) |
Table 2. RGB Format in Default Mode, RGB_CFG = 00, No Swap
| Mode |
Byte |
D7 |
D6 |
D5 |
D4 |
D3 |
D2 |
D1 |
D0 |
| RGB 8:8:8 |
Byte 0 |
R7(i) |
R6(i) |
R5(i) |
R4(i) |
R3(i) |
R2(i) |
R1(i) |
R0(i) |
| Byte 1 |
G7(i) |
G6(i) |
G5(i) |
G4(i) |
G3(i) |
G2(i) |
G1(i) |
G0(i) |
| Byte 2 |
B7(i) |
B6(i) |
B5(i) |
B4(i) |
B3(i) |
B2(i) |
B1(i) |
B0(i) |
| Byte 3 |
R7(i+1) |
R6(i+1) |
R5(i+1) |
R4(i+1) |
R3(i+1) |
R2(i+1) |
R1(i+1) |
R0(i+1) |
| RGB 5:6:5 |
Byte 0 |
R4(i) |
R3(i) |
R2(i) |
R1(i) |
R0(i) |
G5(i) |
G4(i) |
G3(i) |
| Byte 1 |
G2(i) |
G1(i) |
G0(i) |
B4(i) |
B3(i) |
B2(i) |
B1(i) |
B0(i) |
| Byte 2 |
R4(i+1) |
R3(i+1) |
R2(i+1) |
R1(i+1) |
R0(i+1) |
G5(i+1) |
G4(i+1) |
G3(i+1) |
| Byte 3 |
G2(i+1) |
G1(i+1) |
G0(i+1) |
B4(i+1) |
B3(i+1) |
B2(i+1) |
B1(i+1) |
B0(i+1) |
Table 3. RGB Format, RGB_CFG = 10 (Mode 2), No Swap
| Mode |
Byte |
D7 |
D6 |
D5 |
D4 |
D3 |
D2 |
D1 |
D0 |
| RGB 5:6:5 |
Byte 0 |
G2(i) |
G1(i) |
G0(i) |
R4(i) |
R3(i) |
R2(i) |
R1(i) |
R0(i) |
| Byte 1 |
B4(i) |
B3(i) |
B2(i) |
B1(i) |
B0(i) |
G5(i) |
G4(i) |
G3(i) |
| Byte 2 |
G2(i+1) |
G1(i+1) |
G0(i+1) |
R4(i+1) |
R3(i+1) |
R2(i+1) |
R1(i+1) |
R0(i+1) |
| Byte 3 |
B4(i+1) |
B3(i+1) |
B2(i+1) |
B1(i+1) |
B0(i+1) |
G5(i+1) |
G4(i+1) |
G3(i+1) |
Table 4. RGB Format in Default Mode, RGB_CFG = 00, Swap Activated
| Mode |
Byte |
D7 |
D6 |
D5 |
D4 |
D3 |
D2 |
D1 |
D0 |
| RGB 8:8:8 |
Byte 0 |
R0(i) |
R1(i) |
R2(i) |
R3(i) |
R4(i) |
R5(i) |
R6(i) |
R7(i) |
| Byte 1 |
G0(i) |
G1(i) |
G2(i) |
G3(i) |
G4(i) |
G5(i) |
G6(i) |
G7(i) |
| Byte 2 |
B0(i) |
B1(i) |
B2(i) |
B3(i) |
B4(i) |
B5(i) |
B6(i) |
B7(i) |
| Byte 3 |
R0(i+1) |
R1(i+1) |
R2(i+1) |
R3(i+1) |
R4(i+1) |
R5(i+1) |
R6(i+1) |
R7(i+1) |
| RGB 5:6:5 |
Byte 0 |
G3(i) |
G4(i) |
G5(i) |
R0(i) |
R1(i) |
R2(i) |
R3(i) |
R4(i) |
| Byte 1 |
B0(i) |
B1(i) |
B2(i) |
B3(i) |
B4(i) |
G0(i) |
G1(i) |
G2(i) |
| Byte 2 |
G3(i+1) |
G4(i+1) |
G5(i+1) |
R0(i+1) |
R1(i+1) |
R2(i+1) |
R3(i+1) |
R4(i+1) |
| Byte 3 |
B0(i+1) |
B1(i+1) |
B2(i+1) |
B3(i+1) |
B4(i+1) |
G0(i+1) |
G1(i+1) |
G2(i+1) |
The RGB 5:6:5 input format is processed to be displayed as RGB 5:6:5 format, compliant with the 16-bit mode of the LCD controller.