We have noticed that while the module TX2i temperatures read from the module are in the range +5⁰C up to +31⁰C there is no DSI video coming from the module. Currently we do not know the nature of the problem but the FPGA down the road which converts the MIPI signal from the module to HD-SDI receives no video, while when the FPGA is requested to display HD-SDI (in the same temperqature range) there is video output from the FPGA – so the problem is between the module and the FPGA.
We did not notice this issue until now because during development, the modules raise to ~50⁰C while in room temperature. During extreme testing the tests were applied in the extreme temperatures -40⁰C and +71⁰C (environment) only. Though, while in the chamber test we have tested by mistake the DSI output while the module was in the range mentioned above (chamber temperature was lower than +25⁰C – room temperature). We’ve tried to replace modules thinking that the manufacture batch is to blame, we have replaced our boards, but with no success the failure is constant and reproducible.