Part Number:BQ78Z100
My customer has been having issues in communicating with the bq78z100 on his board:
The two bytes for device type on the EVM are the third and fourth byte of the response in Little Endian so that would be the "00 11" which if we reverse them gives us 0x1100 which is what is shown on the left-hand side of the screen shot next to the chip icon.
For the device we have on our boards this same command returns third and fourth bytes of "00 01" in Little Endian. When reversed that is a Device Type of 0x0100 which does not correspond to the BQ78Z100 but apparently corresponds to the BQ34Z100:
http://e2e.ti.com/support/power-management/f/196/t/552452?tisearch=e2e-sitesearch&keymatch=bq78z100
The list in bqStudio has device 0100 matching up with a bq35100:
While 1100 is for the bq78z100:
The chips in question are labeled as BQ78100 on both the EVM and on our PCBA, but they do not return the same Device Type...and that is a concern.
What might be the problem here?