Sierra Wireless WISMO218 - Manual (Page 77)

WA_DEV_W218_PTS_002 Rev 005 Page 77 of 109
Product Technical Specification &
Customer Design Guidelines
Parameter Condition Minimum Typ. Maximum Unit
T
delay
- 11 - µs
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
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.