Sparkfun Camera

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MagnaChip HV7131GP CMOS Camera Module

8-Bit Output Format Support:

  • YCbCr 4:2:2
  • Bayer

the libdc1394 howto provides an excellent introduction to the Bayer format.

the starting row and column determine the Bayer format

  • even BGGR
  • odd GRBG

basically because the camera is slightly larger than 640x480 you can set the window for usage:

  • Row 2 and Column 2 with Window Heigh 640 and Width 480 produces Bayer BGGR
  • Row 1 and Column 1 with Window Heigh 640 and Width 480 produces Bayer GRBG

the odd/even are dependent on the orientation of the scan.


Information gathered from the Sparkfun Forums

although the camera does support a 16-bit mode, the ribbon cable only provides support for the 8-bit mode.


          ------------
     ENB  | 11     1 |    Y0
     RST  | 12     2 |    Y1
     GND  | 13     3 |    Y2
     VDD  | 14     4 |    Y3
     SCL  | 15     5 |    Y4
     SDA  | 16     6 |    Y5
  FVALID  | 17     7 |    Y6
  LVALID  | 18     8 |    Y7
    PCLK  | 19     9 |    VDD
    MCLK  | 20    10 |    GND
          ------------

NOTE: Pins 14 + 9 are connected to VDD :
V+ --|
     |
     |----[B1]--------------#--------- Pin 9
     |                      |
     |                      |
     |----[B2]-------#------)--------- Pin 14
                     |      |
                     |      | 
                    [C1]   [C2]
                     |      |
                   -----  -----
                    ---    ---
                     -      -

busonerd states - "My guess for the parts values would be a ~600ohm @ 100MHZ ferrite bead (B1 and B2), current capacity ~100-200 ma, and a 0.1uf caps(C1 and C2). You really can't go wrong with the ferrite bead - just get a higher impedance + higher current capacity one if in doubt. For the caps(C1 and C2) - if you really want to be paranoid, use an 0.47uf, an 0.1uf and an 0.01uf - with the smaller values nearer the connector - but that is guaranteed overkill."