Hello. The XTALI Vih spec is below from IMX6DQAEC(Rev.4).
XTALI high-level DC input voltage (Vih) : 0.8 x NVCC_PLL_OUT [Min]
But, the current customer's system was below.
- NVCC_PLL_OUT: 1.1V
- VIH: 0.87V --> (= 0.79 x NVCC_PLL_OUT)
My customer must remove the 2.2 M-ohm resistor to meet the DC spec.
On the one hand, the 2.2 M-ohm resistor must need for ERR005777 in Chip errata.
Is it possible to be permissible the VIH (=0.87V) in MX6DQ?
(Oscillator maker answered that matching is OK and 2.2M-ohm shouldn't be removed for ERR005777.)