Netgear NM7371 사용자 설명서
Rev 3 Sep.13
Proprietary and Confidential
9
2
2: Power
Power supply
The host provides power to the NM7371 through multiple power and
ground pins. The host must provide safe and continuous power at all times;
the module does not have an independent power supply, or protection
circuits to guard against electrical issues.
ground pins. The host must provide safe and continuous power 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 NM7371 Product Technical Specification Document & Customer
Design Guidelines.
the NM7371 Product Technical Specification Document & Customer
Design Guidelines.
Module power states
The module has four power states, as described in
.
Table 2-1: Module power states
State
Details
Host i
s
powered
Module is powered
USB interfa
c
e
a
c
tive
RF ena
b
led
Normal
(Default
(Default
state)
•
Module is active
•
Default state when VCC is first applied
•
Module is capable of placing / receiving calls, or establishing data connections on
the wireless network
the wireless network
•
Current consumption is affected by several factors, including:
•
Radio band being used
•
Transmit power
•
Receive gain settings
•
Data rate
•
Number of active Tx time slots
Low power
(‘Airplane
(‘Airplane
mode’)
•
Module is active
•
Module enters this state:
•
Under host interface control
•
Automatically, when critical temperature or voltage trigger limits have been
reached
reached