OPT9221: MAC test features

Mike Smith7

Part Number: OPT9221
Other Parts Discussed in Thread: OPT8241

Hello,

What are the signal paths tested by the PHY and MAC test withing the OPT9221. Does the MAC test generate input data that passes through the DDR2 RAM interface and then on to the output block? Does the PHY test just generate a ramp signal directly at the output block without testing any other internal paths?

We are having issues with intermittent noise and image quality and the MAC test ramp signal is showing the same image quality problems, so I would really like to know if the DDR2 is in the path of the MAC test.

What other issues could we have if the ramp image generated by the MAC test is speckled/noisy but the PHY test ramp pattern is OK.

Thanks,

Mike

over 6 years ago

0 Larry Li over 6 years ago

TI__Expert 3495 points

Hi Mike,

Let me check on this for you, and the reply will be posted on this E2E thread.

Meanwhile could you please tell us more about your application? It seems you're already at a point of developing a camera system? Please reply to ti-3dtof@list.ti.com for more private discussion.

-Larry

0 Dave McMordie over 6 years ago in reply to Larry Li

Prodigy 130 points

Hi Larry,

I work with Mike. The application is related to traffic monitoring. However, the tests we are doing at present are just enabling the phy test and mac test.

Best regards,

Dave McMordie