Technical Specs

Rev 5 May.21
48
41113694
Product Technical Specification
Module Power States
The module has five power states, as described in Table 4-4.
Table 4-4: Module Power States
State Details
Host
is powered
USB
interface
active
Radio
enabled
Normal
(Default
state)
•
Module is active
• Default state. Occurs when VCC is first applied, Full_Card_Power_Off# is
deasserted (pulled high), and W_DISABLE# is deasserted
• Module is capable of placing/receiving calls, or establishing data connections on the
wireless network
• Current consumption is affected by several factors, including:
• Radio band being used
• Transmit power
• Receive gain settings
• Data rate
✔ ✔ ✔
Low power
(‘Airplane
mode’)
•
Module is active
• Module enters this state:
• Under host interface control:
· Host issues AT+CFUN=0 ([1] AT Command Set for User Equipment (UE)
(Release 6) (Doc# 3GPP TS 27.007))), or
· Host asserts W_DISABLE#, after AT!PCOFFEN=0 has been issued.
• Automatically, when critical temperature or voltage trigger limits have been
reached))
✔ ✔ ✘
Sleep
•
Normal state of module between calls or data connections
• Module cycles between wake (polling the network) and sleep, at network provider-
determined interval.
✔
✘
a
✘
Off
•
Host keeps module powered off by asserting Full_Card_Power_Off# (signal pulled
low or left floating)
• Module draws minimal current
• See Full_Card_Power_Off# and RESET# on page 32 for more information.
✔
✘
a
✘
Disconnected
•
Host power source is disconnected from the module and all voltages associated with
the module are at 0 V.
✘
✘
b
✘
a. USB interface is suspended
b. USB interface is disconnected