Hi Sir,
On the spec, the VIH of PDB pin is 1.17V according to DC electrical table on page 12 of the spec.
And according to PDB pin define description on page 7 of spec, there is a 50K ohm pull down resistor on PDB.
But the reference circuit on page 144 of spec, it suggest to use a 33K ohm pull up to 1.8V.
Based on the calculation, 33K pull up + 50K pull down, the voltage on the PDB pin is only 1.08V which is lower than the VIH(1.17V) of PDB pin.
May I learn from you if there is something wrong on the reference circuit or VIH spec?
Thanks,
Patrick
