Difference between revisions of "C38A"
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The C38A is 5V powered, it's not a great problem to power the module at this voltage. But the problem is for I/O, because all APF I/O are 3.3V signals. To solve this problem, the [http://mxhaard.free.fr/spca50x/Doc/Omnivision/OV7620.pdf chip used in C38A] provide a IO VDD power entry that can be powered with both 5V or 3.3V. By default on C38A kit, all power supplies are connected to 5V. To provide 3.3V on power IO (DOVDD), JP2 strap on kit must be deconnected, and 3.3V must be connected on J6 (DOVDD). | The C38A is 5V powered, it's not a great problem to power the module at this voltage. But the problem is for I/O, because all APF I/O are 3.3V signals. To solve this problem, the [http://mxhaard.free.fr/spca50x/Doc/Omnivision/OV7620.pdf chip used in C38A] provide a IO VDD power entry that can be powered with both 5V or 3.3V. By default on C38A kit, all power supplies are connected to 5V. To provide 3.3V on power IO (DOVDD), JP2 strap on kit must be deconnected, and 3.3V must be connected on J6 (DOVDD). | ||
| + | |||
| + | ==Links== | ||
| + | * http://www.roboternetz.de/phpBB2/download.php?id=14529 | ||
Revision as of 18:10, 3 April 2009
This article explains how to use the C38A camera (ov7620) with APF9328. Alchimoun and Jmfriedt already used a similar camera and all their code is available here.
Pinout
The pinout of the kit is as following :
| C38A pinout | ||||||||||||||||
| PIN | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 | 32 |
| Y1 | Y3 | Y5 | Y7 | RST | FODD | HREF | VSYN | PCLK | VCC | VCC | UV1 | UV3 | UV5 | UV7 | VTO | |
| Y0 | Y2 | Y4 | Y6 | PWDN | SDA | SCL | AGND | AGND | EXCLK | AGND | UV0 | UV2 | UV4 | UV6 | GND | |
| PIN | 1 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 17 | 19 | 21 | 23 | 25 | 27 | 29 | 31 |
Powering
The C38A is 5V powered, it's not a great problem to power the module at this voltage. But the problem is for I/O, because all APF I/O are 3.3V signals. To solve this problem, the chip used in C38A provide a IO VDD power entry that can be powered with both 5V or 3.3V. By default on C38A kit, all power supplies are connected to 5V. To provide 3.3V on power IO (DOVDD), JP2 strap on kit must be deconnected, and 3.3V must be connected on J6 (DOVDD).
