LTE Module Series
EC20 Mini PCIe Hardware Design
EC20_Mini_PCIe_Hardware_Design Confidential / Released 25 / 36
3.8.1. RI Signal
The RI signal can be used to wake up the host. When URC returns, there will be the following behavior on
the RI pin.
Figure 11: RI Behavior
3.8.2. DTR Signal
The DTR signal supports sleep control function, drive it to low level will wake up the module. AT command
AT+QCFG="pwrsavedtr" is used to disable the sleep control function.
3.8.3. W_DISABLE# Signal
EC20 Mini PCIe provides W_DISABLE# signal to disable wireless communications through hardware
operation. The following table shows the radio operational states of module. Please refer to document [2]
for related AT commands.
Table 11: Radio Operational States
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