Pin description, Application, Figure 37 – Sierra Wireless AIRPRIME WISMO218 User Manual
Page 73: Example of tx status implementation, Table 35, Tx_ctrl signal pin descriptions
WA_DEV_W218_PTS_002
Rev 006
April 29, 2010
73
Product Technical Specification &
Customer Design Guidelines
Interfaces
3.17.2. Pin Description
Table 35: TX_CTRL Signal Pin Descriptions
Signal
Pin
Number
I/O
I/O Type
Reset State
Description
TX_CTRL
18
O
2V8
1
TX Burst indication
3.17.3. Application
The TX burst indication signal, TX_CTRL, can be used to drive a LED through a transistor. It will then
be a good visual indicator for any TX activities.
Figure 37.
Example of TX Status Implementation
The value of R607 can be harmonized depending on the LED (D605) characteristics.