Telit Wireless Solutions LN930-AP - Wake on WWAN Signal

LN930 M.2 Hardware User Guide
1VV0301078 Rev.10 – 2015-11-11
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved. Page 36 of 88
Table 13
LED#1 Signal
Signal Name
Detailed Description
Pin
Direction
(WWAN)
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
3.4.4
Wake on WWAN Signal
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.