electronics forum beginner
Joined: 06 Jan 2007
|Posted: Sat Jan 06, 2007 4:40 pm Post subject:
Subject description: Problem using OV7141
It's the first time, I'm using a Omnivision Chip.
I have Buy a OV7141 to make an image capture device.
I have made a complete circuit around the OV7141.
I have try to communicate with the device on the SCCB port.
But I'm not able to retrieve any information.
When I send the address 0x42 on this bus.
I don't received any acknowledge.
So My first question is how can I test If my chip is working ?
I feed the chip with 2.5V and 3.3V for IO.
pin PWDN feeded to 0V.
pin reset feeded to 0V.
I have try to test the pin VREF. But the pin stay at 0V.
VREF is connected to a 1uF capacitor.
Do I do anything wrong ?
Thanks in advance for your help