C38A

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).