Other Parts Discussed in Thread: BQ79616
We connected 4 Bq79616 devices to BQ79600.
Immediately after a power ON reset and once BQ79616 devices started communicating, we observe the bit FAULT_COMM in FAULT_SUMMARY resistor gets set.
On further analyzing it was observed that all the BQ79616 reports Start of Frame Error (“RR_SOF” or “RC_SOF”) and Daisy chain error (“RR_CRC” or “RC_CRC”).
If we break the daisy chain communication in forward direction and communicate in reverse direction, it was observed for BQ79616 1, 2, 3 devices still FAULT_COMM bit is set to 1, and no error for 4th device.
even for devices 1,2,3 none of relevant bits in fault_comm1,2 or 3 are set.
The good thing is even with these error status, we haven’t observed any functionality limitation.
- All the functionality works fine(including reading the cell voltage, bus bar voltage, cell temperature etc)
could you please let us know what can cause this behaviour?