Hi TI!
We have downloaded all the design files for TIDA-01021 in the present revision and ordered complete manufacturing (PCB and assembly) at an EMS supplier in Germany. The supplier is ready to start assembly and in their final review process they have discovered several inconsistencies in the BOM and assembly drawing. We did a double-check this morning of schematic, assembly drawing, BOM and pick'n place file and could indeed confirm that there are errors that threaten safe operation and functionality of the board if assembled according to present documents.
Example:
R111 (0R) occurs once in the schematic close to OSCinM1 connector and is set to Not Mount. In the layout, R111 occurs twice: The correct position and in the place where R178 ought to be according to schematic, the line connecting U5 pin 13 with U2 pin 8. This means that U5 will see the wrong load because R212 is 100R and R178, instead of 100R, has become 0R.
According to layout, the voltage programming resistors for U12 are called R179, R180, R181, R178, R295 and R296. In the schematic three of these have been removed: R181, R178 and R296. Apparently R178 have been re-used at another position in the schematic without correct backannotation of the layout. The BOM states that R178 shall be 100R, the pick'n place file states that R178 shall be 0R and in either case it being assembled will program U12 to another output voltage than what the schematic values say it should be.
There are more errors than these and we are in a problematic situation here:
* Our supplier cannot go ahead to assembly because of errors in the pick'n place file, the BOM and the assembly drawing. Since the BOM and pick'n place file does not correspond, they have not been able to secure the right amount of components.
* We do not have the resources and the time to manually go through and to our best knowledge try to correct your documents and send to the manufacturer.
* We would not want our supplier to go ahead and do their best according to present documents, since that would cause obvious wrongly placed components and would cause us to have to both manually correct the documents as above and also to manually correct the PCBs by swapping components by hand soldering.
Please TI, do your best to urgently put somebody on correcting the documents from the starting point that the PCBs have been manufactured according to the gerber files and cannot be changed. Thus the reference designators on the board layout have to be governing. We are standing here unable to move forward and valuable project time and money is ticking away.
