User's Manual Part 1

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  
Table 13
LED#1 Signal
Signal Name Detailed Description Pin Direction
(WW
AN)
Voltage
Level
LED#1 LED Status Indicator 10 O (OD) 3.3 V
Figure 7 is an example of how an LED indicator is typically connected in a platform/system
using 3.3 V. The series resistor can be adjusted to obtain the desired brightness.
Figure 7 Typical LED Connection
The indication protocol for the LED is shown in
Table 14
.
Table 14
LED State Indicator
State Definition Characteristics WWAN
S
OFF The LED is emitting no - Not
ON The LED is emitting light
in a stable non-flashing
state
- Powered registered but
not transmitting or
receiving
 
An output signal is available to wake the host system, WAKE_WWAN#. This is an active
low, open-drain output.
This output requires a pull-up resistor on the host system.