nRF9160 ENABLE pin voltage requirements

[Rulu]

Hi. Some questions regarding the nRF9160 ENABLE pin:

1. According to the nRF9160 product specification the ENABLE pin voltage requirements are like this:

In the first line the text says it takes more that 0.8*VDD to 'enforce System-Disabled power mode'.
So a logical high makes the circuit go to Disable mode?

According to the ref designs, the ENABLE pin is pulled high (to VDD) to enable the SIP, so it seems like the text in the spec is not correct?

2. According to Nordic feedback on the forum the voltage levels for the ENABLE pin are:

Enable High min. 1.2V, and SiP is on/has power
Enable Low max. 0.4V, and SiP is off/does not have power

So what is the correct high level voltage for this signal: 1.2V or 0.8*VDD?

3. If VDD is 3.0V - 4.2V and the ENABLE pin is 1.2V, will the SIP draw any extra current due to the 'low' voltage on the ENABLE pin?

[ketiljo]

1. Enable is active high. So min VDD*0.8 to enable the module: https://infocenter.nordicsemi.com/topic/ps_nrf9160/pmu.html#unique_1794368665

2. This is for gen1 and is outdated. 

3. This is outside the spec for gen2 modules and may not work. Most probably, the module will be disabled.