Unexpected Voltage output on pin AB19

[Joseph_Wilger]

For this pin (AB19) we are seeing partial transition from 1.8 V to 1.3 V.

The good PCBA the upper level is 1.8 volt rail. 
On a good PCBA, the lower level is ≤ 0.3 V.

On a bad PCB, the upper level is 1.8 volt rail. 
On a good PCBA, the lower level is ≤ 1.3 V.

This level does not allow the remainder of the circuit to detect the lower level transition.

[FvM]

Hi,
unfortunately I don't have a crystal Ball, please tell us which board you are talking about? Presume it's a common development board with schematics available.

[Farabi]

Hello,

Could you please tell :

1- what device

2- what board

regards,

Farabi

[AqidAyman_Intel]

Hello,

Any updates for this issue?