This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Part Number: OPT9221
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.
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
In reply to Larry Li:
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.
In reply to Dave McMordie:
MAC test goes through DDR, while PHY test does not.
3DToF Landing Page
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.