TC5747 Datasheet, PDF (27/44 Pages) List of Unclassifed Manufacturers – Single Chip CMOS Imager with Integrated Image Signal Processor and JPEG Codec

TC5747 Preliminary Data Sheet
Single Chip CMOS Imager
4.2.6 Data
4.2.6.1 General
The type of data (Bayer, RGB, YCrCb 4:2:2 or JPEG) output from the TC5747 is programmable through the
TC5747 programming registers, using host commands. The type of data also defines the frequency of the
TC5747’s output clock signal.
4.2.6.2 Bayer Output
When Bayer output is selected, the data volume is one byte per pixel.
If Data-Markers are added, 8 more bytes per line must be taken into consideration in the image buffer that is
allocated for the application.
There are two types of Bayer data lines:
“ RED” lines - lines that carry Green and Red Bayer components. The Green and Red data bytes are
interleaved. The even numbered bytes (0, 2 to 2n) are Green, the odd numbered bytes (1,3 to 2n+1) are
Red.
“ BLUE” lines - lines that carry Blue and Green Bayer components. The Green and Blue data bytes are
interleaved. The even numbered bytes (0, 2 to 2n) are Blue, the odd numbered bytes (1,3 to 2n+1) are
Green.
When sending out the data in Bayer-grid format, a “ RED” line will always be the first line in the frame.
4.2.6.3 YCrCb 4:2:2 Output
When YCrCb 4:2:2 output is selected, the data volume is two bytes per pixel. If Data-Markers are added, 8
more bytes per line must be taken into consideration in the image buffer that is allocated for the application.
The data in the YCrCb 4:2:2 output format is ordered in several configurations, according to the setting in the
Color_order bits in the video output control registers:
00 - SOL, Y0, U0, Y1, V0, Y2, U2, Y3, V3, to Yn-2, Un-2, Yn-1, Vn-2, EOL
01 - SOL, Y0, V0, Y1, U0, Y2, V2, Y3, U3, to Yn-2, Vn-2, Yn-1, Un-2, EOL
10 - SOL, U0, Y0, V0, Y1, U2, Y2, V3, Y3, to Un-2, Yn-2, Vn-2, Yn-1, EOL
11 - SOL, V0, Y0, U0, Y1, V2, Y2, U3, Y3, to Vn-2, Yn-2, Un-2, Yn-1, EOL
4.2.6.4 RGB565 Output
When RGB565 output is selected, the data volume is two bytes per pixel. Output data are transmitted in the
same manner and frequency as the YCrCb 4:2:2 output format, on DOUT[9:2]. The first byte of each pixel
carries 5 bits of the Red color component, and the 3 MSB of the Green. The second byte carries the 3 LSB
of the Green color component, and the 5 bits of the Blue color component.
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