Other Parts Discussed in Thread: BQ76PL455A, BQ79616
Hello, we have communication troubles with the last BQ76PL455A-Q1 of a chain of 13 devices.
In a first time we had no communication at all just with this device but reducing the cables capacity (changing size, type and length) we reduced the problem. Now we have good communication but randomly we start to see errors.
We would like to understand if there is a way to evaluate the signal deterioration. We are looking at the COMM+/COMM- with an oscilloscope and we can see difference in voltage level and timing between the exit of the different boards, but we cannot understand if the signal is good enough. There are min/max voltage level or threshold? Minimum timing for low and high state or other parametesr to look at?
Here after 2 immages of signals comparison.
Thanks a lot