Power; Power Supply; Module Power States - Sierra Wireless AirPrime EM7565 Hardware Integration Manual

2: Power

Power Supply

The host provides power to the EM7565 through multiple power and ground pins. The
host must provide safe and continuous power (via battery or a regulated power
supply) at all times; the module does not have an independent power supply, or
protection circuits to guard against electrical issues.
For detailed pinout and voltage/current requirements of this module, see the AirPrime
EM7565 Product Technical Specification.

Module Power States

The module has five power states, as described in
Table 2-1: Module Power States
State Details
•
Normal Module is active
(Default
•
Default state. Occurs when VCC is first applied, Full_Card_Power_Off# is deasserted
state)
(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 Module is active
('Airplane
•
Module enters this state:
mode')
•
Under host interface control:
·
Host issues AT+CFUN=0 (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-deter-
mined interval.
Rev 1 Dec.17
Table 2-1.
6
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