Send EC25 MiniPCIe to sleep without removing USB from host

IoT Modules LTE Standard Module
1

EC25 Mini PCIe manual writes that in order to put the module in sleep mode, three conditions must be fullfilled:

  1. AT command: “AT+QSCLK=1”
  2. Pull DTR to HIGH
  3. USB interface in a suspended state.

I would like to know whether is possible to put the EC25 in sleep mode even if the USB interface is not in a suspended state. I’m able to put it in sleep mode if I don’t have a USB cable connected and with just 1. and 2. actions. However, if I have a USB connected the EC25 does not go to sleep mode.

In other words: how can I put the EC25 MiniPCIe in sleep mode without suspending the host and without removing the USB connection?

2

Hello miguelwon
If you don’t want to remove the USB device, then you must power off the USB power supply pin or put the USB in a suspended state, otherwise the module cannot enter the sleep mode, thank you.