Sierra Wireless AIRPRIME WISMO218 - Manual (Page 87)

WA_DEV_W218_PTS_002 Rev 006 April 29, 2010 87
Product Technical Specification &
Customer Design Guidelines Technical Specifications
5.2.2. Recommended Connection When Not Used
The table below gives the recommended connection for any unused pins.
Pin
#
Signal
Recommended
Connection when not
Used
Pin
#
Signal
Recommended Connection
when not Used
1 SPKP open 24 GPIO1 open
2 SPKN open 25 SPI-IRQ PCB test point
3 MICP open 26 GND Ground
4 MICN open 27 NC Not connected
5 AUX_ADC0 Ground 28 GND Ground
6 BAT-RTC open 29 VBATT Power supply
7 WISMO_READY open 30 VBATT Power supply
8 SIM-VCC SIM power supply 31 GND Ground
9 SIM-CLK SIM clock 32 NC Not connected
10 SIM-IO SIM data 33 NC Not connected
11 ~SIM-RST SIM reset 34 BUZZER open
12 ~RESET open 35 PWM1 open
13 SPI-IO PCB test point 36 PWM0 open
14 SPI-O PCB test point 37 On/~OFF Power On control signal
15 SPI-CLK PCB test point 38 CT103/TXD* 2.8V UART1: Transmit data
16 GPIO3 open 39 ~CT105/RTS* Connect to ~CT106/CTS
17 ~SPI-CS PCB test point 40 CT104/RXD* 2.8V UART1: Receive data
18 TX_CTRL not connected 41 ~CT106/CTS* Connect to ~CT105/RTS*
19 GPIO5 open 42 ~CT107/DSR Connect to ~CT108/DTRNote 1
20 GND Ground 43 ~CT109/DCD open
21 ANT Radio antenna connection 44 ~CT108/DTR Connect to ~CT107/DSR Note 1
22 GND Ground 45 ~CT125/RI open
23 GND Ground 46 VCC_2V8 open
Note 1 : Please refer to the recommendations specified in section 3.6.2 Pin Description regarding the connection
between DSR and DTR.